U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Subject term gases Remove constraint Subject term: gases Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
Start Over

Search

11,566  Search Results

« Previous | 1 - 100 of 11,566 |
Number of results to display per page

Search Results

1. A fully implicit coupled pore-network/free-flow model for the pore-scale simulation of drying processes

Author:
K. Weishaupt; T. Koch; R. Helmig
Source:
Drying technology 2022 v.40 no.4 pp. 697-718
ISSN:
1532-2300
Subject:
couplings; drying; dynamic models; energy flow; equations; gases; simulation models; technology
Abstract:
... We present a fully coupled pore-network/free-flow model providing pore-scale insight into drying processes. We solve the Navier–Stokes equations with component transport in the free-flow region, coupled to a dynamic two-phase, two-component pore-network model (PNM) in the porous domain. The dynamic multi-physics model allows to temporally resolve drying processes in-between capillary equilibrium s ...
DOI:
10.1080/07373937.2021.1955706

2. A green and efficient route for simultaneous recovery of low valence of vanadium and chromium, titanium and iron from vanadium slag

Author:
Zhenghao Wang; Liang Chen; Zhifeng Qin; Ke Yang; Bin Liang; Guoquan Zhang; Changjun Liu; Dongmei Luo
Source:
Resources, conservation, and recycling 2022 v.178 pp. 106046
ISSN:
0921-3449
Subject:
alloys; batteries; chromium; gases; industry; iron; leachates; slags; sulfuric acid; sustainable development; sustainable technology; temperature; titanium; toxicity; vanadium; wastewater
Abstract:
... Traditional methods to recover vanadium from vanadium slag by oxidizing V(III) in slag to V(V) at above 800 °C, result in discharge of significant amount of residue containing Cr, Ti, Fe, and wastewater containing highly toxic V(V) and Cr(VI). Then V₂O₅ was reduced to low valence vanadium (LVV) for applications, such as vanadium flow battery, vanadium alloy. It is necessary to effectively utilize ...
DOI:
10.1016/j.resconrec.2021.106046

3. A model for predicting the separation performance of a coupling cyclone with a built-in granular bed filter

Author:
Ming Chang; Yiping Fan; Jinzhuang Fu; Yongqi Li; Chunxi Lu
Source:
Powder technology 2022 v.399 pp. 116941
ISSN:
0032-5910
Subject:
couplings; cyclone separators; data analysis; dust; dusting; filters; gases; models; powders; prediction
Abstract:
... A separator coupling cyclone with built-in granular bed filter was proposed for gas purification. By analyzing available data in published literature and experimental results, a new model for predicting the separation performance of the coupled separator was obtained by regressing against a broad range of parameter governing the dusts collection in the coupled separator. In particular, the mutual ...
DOI:
10.1016/j.powtec.2021.10.049

4. A novel integrated stochastic programming-information gap decision theory (IGDT) approach for optimization of integrated energy systems (IESs) with multiple uncertainties

Author:
Qie Sun; Yu Fu; Haiyang Lin; Ronald Wennersten
Source:
Applied energy 2022 v.314 pp. 119002
ISSN:
0306-2619
Subject:
energy; energy use and consumption; equipment; gases; methodology; planning; risk; turbines; uncertainty
Abstract:
... Uncertainties can affect the operation and planning of integrated energy systems. It is thus critical to understand how uncertainties can be handled in IES optimization. To address this issue, this study proposed a novel integrated stochastic programming-information gap decision theory (IGDT) approach, which can handle multiple uncertainties in the optimization of IES operation and planning. By ap ...
DOI:
10.1016/j.apenergy.2022.119002

5. A novel mode for “three zones” collaborative reconstruction of underground gas storage and its application to large, low-permeability lithologic gas reservoirs

Author:
Jieming Wang; Jinkai Wang; Shujuan Xu; Rui Wu; Jian Lv; Zhi Li; Chun Li; Jinliang Zhang; Lei Zhao; Jun Xie; Jianguo Zhang
Source:
Energy 2022 v.253 pp. 124148
ISSN:
0360-5442
Subject:
cooperatives; energy; financial economics; gases; mathematical models; prediction; wills
Abstract:
... The difficult of reconstruction area selection, the unclear closed boundary and the low injection-production efficiency are the main problems restricting the gas storage reconstruction in large-scale low-permeability lithologic gas reservoir. In view of this, this paper proposes a new ‘three zones' cooperative building model which can provide a comprehensive selecting standard, delimit a stable cl ...
DOI:
10.1016/j.energy.2022.124148

6. A novel way to facilely degrade organic pollutants with the tail-gas derived from PHP (phosphoric acid plus hydrogen peroxide) pretreatment of lignocellulose

Author:
Miao Lei; Fei Shen; Jinguang Hu; Li Zhao; Mei Huang; Jianmei Zou; Dong Tian; Gang Yang; Yongmei Zeng; Shihuai Deng
Source:
Journal of hazardous materials 2022 v.424 pp. 127517
ISSN:
0304-3894
Subject:
cytotoxicity; decolorization; feedstocks; fuel production; gases; hexachlorobenzene; hydrogen peroxide; latex; lignocellulose; malachite green; methyl orange; methylene blue; phosphoric acid; pollutants; resorcinol; rhodamines; silicone; spectrometers; survival rate; tetracycline
Abstract:
... The abundantly released tail-gas from lignocellulose pretreatment with phosphoric acid plus hydrogen peroxide (PHP) was found to accelerate the aging of latex/silicone textural accessories of the pretreatment device. Inspired by this, tail-gas was utilized to control organic pollutants. Methylene blue (MB), as a model pollutant, was rapidly decolorized by the tail-gas, and oxidative degradation wa ...
DOI:
10.1016/j.jhazmat.2021.127517

7. Carbon molecular sieve hollow fiber membranes derived from dip-coated precursor hollow fibers comprising nanoparticles

Author:
Yuhe Cao; Kuang Zhang; Chen Zhang; William J. Koros
Source:
Journal of membrane science 2022 v.649 pp. 120279
ISSN:
0376-7388
Subject:
carbon; coatings; composite materials; gases; journals; methodology; nanoparticles; sieves; sieving; skinning
Abstract:
... We report a novel approach to economically fabricate dual-layer composite nanoparticle-containing carbon molecular sieve (CMS) hollow fiber membranes having excellent gas separation performance. The economically favored process comprises dip coating engineered support layer fibers to form a dense skin layer in a CMSCMS precursor. The coated fibers are then pyrolyzed to form a high-performance CMS ...
DOI:
10.1016/j.memsci.2022.120279

8. Coarse-grained CFD-DEM simulations of fluidization with large particles

Author:
Musango Lungu; John Siame; Lloyd Mukosha
Source:
Powder technology 2022 v.402 pp. 117344
ISSN:
0032-5910
Subject:
exhibitions; gases; grains; models; particles; powders; technology; testing; walls
Abstract:
... Detailed validation coarse-grained CFD-DEM model in the open source code MFIX is performed. Metrics used include fluidization behavior, minimum fluidization velocity, averaged pressure drop, mean and rms particle velocity. The choice of the spring constant alters fluidization dynamics. Of drag correlations tested, the Tang et al. (2015) formed poorly overall at low superficial velocities of 2 Umf ...
DOI:
10.1016/j.powtec.2022.117344

9. Conceptual design, optimization and thermodynamic analysis of a CO2 capture process based on Rectisol

Author:
Sheng Yang; Lu Zhang; Dongran Song
Source:
Energy 2022 v.244 pp. 122566
ISSN:
0360-5442
Subject:
byproducts; carbon dioxide; environmental protection; exergy; gases; models; temperature
Abstract:
... Reducing CO₂ emission is particularly important for environmental protection. Much absorbed CO₂ in the conventional Rectisol process is discharged as tail gas due to the lacked attention to the by-product CO₂. In this paper, a novel CO₂ capture process, which is improved from the conventional Rectisol process, is proposed to reduce the emission of CO₂. The revised CPA model shows a good performanc ...
DOI:
10.1016/j.energy.2021.122566

10. Design of a gas-system for testing the phosphine protection of canisters in respirators

Author:
Pengcheng Cui; Changyao Shan; Xin Chen; Lijun Wang; Xiao He; Tao Zhang
Source:
Journal of stored products research 2022 v.95 pp. 101920
ISSN:
0022-474X
Subject:
equipment; fumigants; fumigation; gases; humidity; nitrogen; phosphine; research; temperature
Abstract:
... The canister is a critical component of non-powered air-purifying respirators that protects operators from fumigation environments but which typically lacks equipment for the detection of harmful agents. Based on research of the common fumigant phosphine, a device is herein designed to test the phosphine filtering ability of different canisters, and methods of device operation are discussed. The e ...
DOI:
10.1016/j.jspr.2021.101920

11. Different carbon treatments for steel slag powder and their subsequent effects on properties of cement-based materials

Author:
Yafeng Rui; Chunxiang Qian; Xiao Zhang; Zhiyuan Ma
Source:
Journal of cleaner production 2022 v.362 pp. 132407
ISSN:
0959-6526
Subject:
calcium; calcium carbonate; carbon; carbon dioxide; cement; chemical composition; friction; gases; kilns; microstructure; slags; steel; China
Abstract:
... In order to fill the research gap of CO₂-fixing cementitious materials, and to deal with China's dual-carbon goal, first to use bacteria and steel slag powder to fix CO₂. The paper using untreated steel slag powder as control group, different CO₂-fixing steel slag powder are compared, they are CO₂ treated steel slag and bacteria-CO₂ treated steel slag. The XRF and XRD results shows that the physic ...
DOI:
10.1016/j.jclepro.2022.132407

12. Disbiose intestinal em estudantes do curso de nutrição de uma universidade da grande Florianópolis

Author:
Eliz Garcia Ferreira; Marília Costa de Araujo
Source:
Revista brasileira de obesidade, nutrição e emagrecimento 2022 v.14 no.90 pp. 1240-1248
ISSN:
1981-9919
Subject:
gases; intestines; microorganisms
Abstract:
... O funcionamento do trato gastrointestinal (TGI) tem grande relação com o estado geral do organismo humano. O equilíbrio entre microrganismos benéficos e patógenos, assim como suas interações, são capazes de determinar a saúde do hospedeiro. Fatores internos e externos ao indivíduo podem determinar o equilíbrio do ecossistema bacteriano. Se bem equilibrado, o organismo se mantém protegido e saudáve ...

13. Effect of CO₂/H₂O on adsorptive removal of H₂S/SO₂ mixture

Author:
Jianyu Xuan; Chenyang Wang; Lin Zhang; Qun Cui; Haiyan Wang
Source:
Environmental technology 2022 v.43 no.13 pp. 2069-2079
ISSN:
1479-487X
Subject:
activated carbon; adsorption; carbon dioxide; desulfurization; environmental technology; gases; sulfur; sulfuric acid
Abstract:
... Few studies focus on the simultaneous removal performance and mechanism of H₂S and SO₂ mixture in Claus tail gas with a high concentration of H₂O (20–30 vol.%) and CO₂ (8–10 vol.%). In this paper, the effects of H₂O and CO₂ on the simultaneous removal of H₂S and SO₂ for the by activated carbon (TL-1) were studied. Fresh (TL-1-F) and desulfurisation sulfur-loaded TL-1 activated samples (TL-1-E1 and ...
DOI:
10.1080/09593330.2020.1866084

14. Effect of Cage Occupancy on Stability and Decomposition of Methane Hydrate

Author:
Dilare Kainai; Dongsheng Bai
Source:
Journal of physical chemistry 2022 v.126 no.2 pp. 492-502
ISSN:
1520-5207
Subject:
concentrates; concentrating; exhibitions; gas hydrate; gases; journals; melting; methane; surface area; wills
Abstract:
... Gas hydrates usually contain a certain number of empty cages that will both affect the hydrate stability and reduce the gas storage capacity. In this work, by MD simulations, we found that the hydrate stability is related to the cage occupancy, the empty cage types, and especially the distribution of empty cages. With the decrease of overall occupancy, the stability of hydrate becomes worse. Under ...
DOI:
10.1021/acs.jpcb.1c07582

15. Effective aperture tuning of a zeolitic-imidazole framework CdIF-1 by controlled thermal amorphization

Author:
Sunghwan Park; Hae-Kwon Jeong
Source:
Journal of materials chemistry A 2022 v.10 no.9 pp. 4992-4998
ISSN:
2050-7496
Subject:
adsorption; exhibitions; gases; journals; materials; screening; separation; sieves; sieving; temperature
Abstract:
... Sodalite zeolitic-imidazole frameworks (ZIFs) show great potential due to their effective aperture sizes suitable for small gas separations. Numerous efforts have, therefore, been made in tuning their effective aperture sizes to control and enhance their molecular sieving properties. Herein, we present a new strategy to finely tune the effective aperture size of CdIF-1, a cadmium-substituted ZIF-8 ...
DOI:
10.1039/d1ta10706b

16. Effects of Agriculture and Animal Husbandry on Heavy Metal Contamination in the Aquatic Environment and Human Health in Huangshui River Basin

Author:
Long Zhang; Xianfeng Tan; Hongnian Chen; Yalin Liu; Zhaojie Cui
Source:
Water 2022 v.14 no.4 pp. -
ISSN:
2073-4441
Subject:
animal husbandry; aquatic environment; arsenic; atmospheric deposition; cadmium; carcinogenicity; gases; health effects assessments; heavy metals; human health; industrial wastewater; models; nickel; risk; risk assessment process; rivers; traffic; water; watersheds; China
Abstract:
... Huangshui River (HSR) is the mother river of Qinghai province. Croplands and grasslands cover more than 76% of the total area, and highland agriculture and animal husbandry are the dominant industries. The use of pesticides, fertilizers, and feed additives increases the risk of heavy metal (HM) contamination. In this study, the concentration of HMs in the main stream and tributaries of HSR were in ...
DOI:
10.3390/w14040549

17. Entrance effects on gas-solid hydrodynamics of turbulent fluidized beds filled with Geldart B particles

Author:
Salma Benzarti; Hatem Mhiri; Philippe Bournot
Source:
Powder technology 2022 v.402 pp. 117337
ISSN:
0032-5910
Subject:
fluidized beds; gases; hydrodynamics; industry; powders; solids; technology; testing
Abstract:
... For nearly a century, fluidized beds have been the backbone of the processing industries. However, the complex hydrodynamic behavior aggravated, by the diversified solids handling has largely hindered its scaling up. The flow pattern may be influenced by the solid particles' feeders, and thus can have an impact on the system performance. In the first part of the present work, the hydrodynamic beha ...
DOI:
10.1016/j.powtec.2022.117337

18. Experimental techniques and terminology in gas‐phase ion spectroscopy

Author:
Aleksandr Pereverzev; Jana Roithová
Source:
Journal of mass spectrometry 2022 v.57 no.5 pp. e4826
ISSN:
1076-5174
Subject:
experts; field experimentation; fields; gases; ions; journals; mass spectrometry; measurement; terminology
Abstract:
... This perspective gives an overview of the action spectroscopy methods for measurements of electronic, vibrational, and rotational spectra of mass‐selected ions in the gas phase. We classify and give a short overview of the existing experimental approaches in this field. There is currently a plethora of names used for, essentially, the same techniques. Hence within this overview, we scrutinized the ...
DOI:
10.1002/jms.4826

19. Flow characteristics of pneumatic conveying of stiff shotcrete based on CFD-DEM method

Author:
Lianjun Chen; Zhenjiao Sun; Hui Ma; Gang Pan; Pengcheng Li; Kang Gao
Source:
Powder technology 2022 v.397 pp. 117109
ISSN:
0032-5910
Subject:
conveyors; couplings; elbows; exhibitions; feeds; field experimentation; gases; mathematical models; powders; transportation
Abstract:
... To reveal the flow characteristics of materials in the pneumatic transportation of stiff shotcrete, based on the CFD-DEM coupling simulation method, the numerical simulation of gas-solid flow of stiff shotcrete materials in the pipeline transportation process was carried out. The discrete element simulation parameters of stiff shotcrete are obtained by parameter calibration. In addition, the accur ...
DOI:
10.1016/j.powtec.2022.117109

20. Gate-Tuned Gas Molecule Sensitivity of a Two-Dimensional Semiconductor

Author:
Hong Kyw Choi; Jaesung Park; Oh Hun Gwon; Jong Yun Kim; Seok-Ju Kang; Hye Ryung Byun; BeomKyu Shin; Seo Gyun Jang; Han Seul Kim; Young-Jun Yu
Source:
ACS applied materials & interfaces 2022 v.14 no.20 pp. 23617-23623
ISSN:
1944-8252
Subject:
electrons; fields; gases; gates; materials; mathematical models; measurement; transistors; transition elements; wills
Abstract:
... In this work, we develop a gate-tunable gas sensor based on a MoS₂/hBN heterostructure field effect transistor. Through experimental measurements and numerical simulations, we systematically reveal a principle that relates the concentration of the target gas and sensing signals (ΔI/I₀) as a function of gate bias. Because a linear relationship between ΔI/I₀ and the gas concentration guarantees reli ...
DOI:
10.1021/acsami.2c02380

21. General pore features for one-step C₂H₄ production from a C2 hydrocarbon mixture

Author:
Tao Zhang; Jian-Wei Cao; Shu-Yi Zhang; He Feng; Ye Li; Yu Wang; Juan Chen; Teng Wang; Kai-Jie Chen
Source:
Chemical communications 2022 v.58 no.32 pp. 4954-4957
ISSN:
1364-548X
Subject:
adsorption; binding sites; chemical communication; gases; hydrocarbons; measurement; mixtures; molecular dynamics; surfaces
Abstract:
... Herein, we propose the required general pore features for one-step C₂H₄ production from a C2 hydrocarbon mixture, such as: (i) a non-metallic binding site; (ii) polar pore surface; and (iii) narrow pocket. Four representative MOFs (Ni-BDC-INA, CPM-173, UiO-66, and DMOF-1) and two counterexamples (MOF-74-Co and IISERP-MOF2) were selected to verify this concept, by conducting single-component gas ad ...
DOI:
10.1039/d2cc00177b

22. German efficiency gone wrong: Unintended incentives arising from the gas TSOs’ benchmarking

Author:
Paul Waidelich; Tomas Haug; Lorenz Wieshammer
Source:
Energy policy 2022 v.160 pp. 112595
ISSN:
0301-4215
Subject:
adverse effects; business enterprises; cost effectiveness; data analysis; energy policy; games; gases; income; risk; risk reduction; simulation models; statistical analysis; transmission systems; variable costs
Abstract:
... The German regulatory framework for gas transmission system operators features a regular efficiency benchmarking that aims to identify inefficient cost components and reduces the allowed revenues accordingly. Using a broad range of data envelopment analysis simulations based on the regulator's data and methodology, this paper identifies problems and potential side effects arising from the efficien ...
DOI:
10.1016/j.enpol.2021.112595

23. Heterogeneous nucleation measurements in a sheathed planar diffusive condensation particle counter

Author:
Derek Kuldinow; Alexis Przybylak; Yizhi Li; Luis J. Perez-Lorenzo; Derek Oberreit; Juan Fernandez de la Mora
Source:
Journal of colloid and interface science 2022 v.605 pp. 556-570
ISSN:
0021-9797
Subject:
aerosols; bromides; cations; clothing; colloids; condensers; counters; gases; journals; measurement; particles; prediction; probability; salting; temperature
Abstract:
... Hypothesis: While the lack of efficient tools yielding controllable uniform saturation ratios (S) has delayed basic experimental heterogeneous nucleation studies, common diffusive condensation particle counters (DCPCs) could fill this gap if their S-variation were minimized by increasing the proportion of sheath gas (σ) surrounding a central core of purified clusters.Analysis: We measure the activ ...
DOI:
10.1016/j.jcis.2021.07.049

24. Highly-integrated and Cost-efficient Ammonia-fueled fuel cell system for efficient power generation: A comprehensive system optimization and Techno-Economic analysis

Author:
Li Lin; Lixuan Zhang; Yu Luo; Juncong Luo; Chongqi Chen; Lilong Jiang
Source:
Energy conversion and management 2022 v.251 pp. 114917
ISSN:
0196-8904
Subject:
administrative management; ambient temperature; ammonia; anodes; carbon dioxide; catalysts; combustion; cost effectiveness; economic feasibility; economic performance; electric potential difference; energy costs; energy efficiency; exergy; fuel cells; gases; heat; hydrogen; methanol; models; power generation; system optimization; transportation; vapor pressure
Abstract:
... Ammonia (NH₃) has been considered as a promising hydrogen storage media due to the features of low saturated vapor pressure at room temperature, high hydrogen content, low costs of transportation and storage, and carbon-free emission·NH₃ can decompose into a gaseous mixture compromising of 75 vol% H₂ and 25 vol% N₂ in an NH₃ decomposition reactor, which can integrate with a proton exchange membran ...
DOI:
10.1016/j.enconman.2021.114917

25. How to Get the Best Gas Separation Membranes from State-of-the-Art Glassy Polymers

Author:
Nicholas E. León; Zhongyun Liu; Maryam Irani; William J. Koros
Source:
Macromolecules 2022 v.55 no.5 pp. 1457-1473
ISSN:
1520-5835
Subject:
asymmetric membranes; composite polymers; gases; skinning
Abstract:
... Herein we focus on fundamental polymer science factors in membrane-based gas separation to open another chapter on this important topic. Realistically thinking about nanometer and angstrom scale matrix attributes that are translatable into higher performance thin glassy polymer asymmetric membrane layers in practical large-scale devices is crucial. Such thinking should be guided by expertise in bo ...
DOI:
10.1021/acs.macromol.1c01758

26. Independence of Corrected Retention Volume from Carrier Gas Pressure and Its Value for Gas Chromatography

Author:
A. Yu. Kanat’eva; A. A. Korolev; A. A. Kurganov
Source:
Journal of analytical chemistry 2022 v.77 no.1 pp. 126-130
ISSN:
1061-9348
Subject:
analytical chemistry; gas chromatography; gases; journals
Abstract:
... Based on the properties of the corrected retention volume and, primarily, its independence from the carrier gas pressure, we concluded that the corrected retention volume cannot be a gas volume. We demonstrated that this parameter is identical to the volume of an ideal fluid required for the elution of a sorbate in an ideal chromatographic system. The corrected retention volume does not obey gas l ...
DOI:
10.1134/S1061934822010063

27. Light-assisted room temperature gas sensing performance and mechanism of direct Z-scheme MoS2/SnO2 crystal faceted heterojunctions

Author:
Yong Yang; Wufei Gong; Xin Li; Yuan Liu; Yan Liang; Bin Chen; Yanxing Yang; Xingfang Luo; Keng Xu; Cailei Yuan
Source:
Journal of hazardous materials 2022 v.436 pp. 129246
ISSN:
0304-3894
Subject:
adsorption; ambient temperature; crystals; design; engineers; gases; journals; surfaces; toxic substances; wills
Abstract:
... Light assistance and construction of heterojunctions are both promising means to improve the room temperature gas sensing performance of MoS₂ recently. However, enhancing the separation efficiency of photo-generated carriers at interface and adsorption ability of surface have become the bottleneck problem to further improve the room temperature gas sensing performance of MoS₂-based heterojunctions ...
DOI:
10.1016/j.jhazmat.2022.129246

28. Long-term environmental surveillance of PM2.5-bound polycyclic aromatic hydrocarbons in Jinan, China (2014–2020): Health risk assessment

Author:
Zhigang Yu; Hong Wang; Xin Zhang; Shuping Gong; Zhen Liu; Ning Zhao; Cuiqin Zhang; Xiaorui Xie; Kaige Wang; Zhong Liu; Jia-Sheng Wang; Xiulan Zhao; Jun Zhou
Source:
Journal of hazardous materials 2022 v.425 pp. 127766
ISSN:
0304-3894
Subject:
coal; environmental monitoring; gases; health effects assessments; lung neoplasms; people; thyroid neoplasms; toxicity; traffic; winter; China
Abstract:
... We established long-term surveillance sites in Jinan city to monitor PM₂.₅ particles (PM2.5) and PM2.5-bound PAHs (2014–2020). The range of PM2.5 was 15–230 µg/m³. The average annual ƩPAH₁₆ were 433 ± 271 ng/m³ (industrial area) and 299 ± 171.8 ng/m³ (downtown). PAHs captured in winter accounted for 61.5% (industrial area) and 59.1% (downtown) of total PAHs. A hazardous seasonal benzo[a]pyrene lev ...
DOI:
10.1016/j.jhazmat.2021.127766

29. Low-temperature reaction dynamics of paramagnetic species in the gas phase

Author:
Lok Yiu Wu; Chloé Miossec; Brianna R. Heazlewood
Source:
Chemical communications 2022 v.58 no.20 pp. 3240-3254
ISSN:
1364-548X
Subject:
chemical communication; combustion; environment; fields; free radicals; gases; magnetism; methodology; models
Abstract:
... Radicals are abundant in a range of important gas-phase environments. They are prevalent in the atmosphere, in interstellar space, and in combustion processes. As such, understanding how radicals react is essential for the development of accurate models of the complex chemistry occurring in these gas-phase environments. By controlling the properties of the colliding reactants, we can also gain ins ...
DOI:
10.1039/d1cc06394d

30. Modelling of keyhole dynamics and melt pool flow in laser powder bed fusion process

Author:
Erlei Li; Zongyan Zhou; Lin Wang; Ruiping Zou; Aibing Yu
Source:
Powder technology 2022 v.400 pp. 117262
ISSN:
0032-5910
Subject:
bubbles; drilling; drills; dynamic models; exhibitions; forces; gases; lasers; liquids; melting; powders; surface tension; travel
Abstract:
... The keyhole dynamics in the laser powder bed fusion (LPBF) process and its relationship with driving forces of surface tension, Marangoni force and recoil pressure have not been well addressed and quantified. In this work, through the modelling of melt pool dynamics, the keyhole life cycle including formation and drilling, fluctuation, and disappearance is captured. The results show that pores are ...
DOI:
10.1016/j.powtec.2022.117262

31. New Insights into the Occurrence and Implications of Mobile Water in Gas Hydrate Systems

Author:
Ray Boswell; Koji Yamamoto; Machiko Tamaki; Timothy S. Collett; George Moridis; Evgeniy Myshakin
Source:
Energy & fuels 2022 v.36 no.5 pp. 2447-2461
ISSN:
1520-5029
Subject:
energy; fields; gas hydrate; gases; production technology; seals; water reservoirs; wells
Abstract:
... Gas hydrate production technologies commonly feature reservoir depressurization. Depressurization occurs when a pressure gradient is established in a well, drawing mobile water from the reservoir and reducing reservoir pressure. As such, the occurrence of mobile water is a necessary condition for effective gas production from gas hydrate reservoirs using common borehole-based methods. However, rec ...
DOI:
10.1021/acs.energyfuels.1c04101

32. Non-innocent redox behavior of Cuᴵᴵ–p-dimethylaminophenolate complexes: formation and characterization of the Cuᴵ–phenoxyl radical species

Author:
Yuto Shima; Takashi Suzuki; Hitoshi Abe; Tatsuo Yajima; Seiji Mori; Yuichi Shimazaki
Source:
Chemical communications 2022 v.58 no.44 pp. 6401-6404
ISSN:
1364-548X
Subject:
chemical communication; free radicals; gases; ions; ligands; solvents
Abstract:
... Cu complexes with p-dimethylaminophenolate ligands were synthesized by the reaction of Cuᴵᴵ ions with the ligands under inert gas atmosphere and characterized. The complexes showed a valence state change from Cuᴵᴵ–phenolate to Cuᴵ–phenoxyl radical on loss of the coordinated solvent. The Cuᴵ–phenoxyl radical species showed the characteristic properties and reactivities. ...
DOI:
10.1039/d2cc01409b

33. Non-thermal plasma-enhanced catalytic activation of Mn–Zr–La/Al2O3 catalyst for meta-xylene degradation: Synergetic effects and degradation mechanism

Author:
Yunni Nie; Xiujuan Tang; Weijian Cai; Jiwu Li
Source:
Chemosphere 2022 v.303 pp. 135184
ISSN:
0045-6535
Subject:
byproducts; catalysts; electric potential difference; gases; oxygen; ozone; xylene
Abstract:
... The LaMnO₃ catalysts doped with transition metal (Zr, Co, Fe) were prepared. The influencing factors (the catalyst type, the initial concentration, the gas flow, and oxygen content) on the degradation efficiency by the non-thermal plasma synergistic the LaMnO₃ catalysts doped with Zr, Co and Fe were investigated systematically. The degradation mechanism of the meta-xylene degradation by the non-th ...
DOI:
10.1016/j.chemosphere.2022.135184

34. Palladium-Catalyzed Reductive Aminocarbonylation of o-Iodophenol-Derived Allyl Ethers with o-Nitrobenzaldehydes to 3-Alkenylquinolin-2(1H)-ones

Author:
Jian-Li Liu; Wei Wang; Xinxin Qi; Xiao-Feng Wu
Source:
Organic letters 2022 v.24 no.11 pp. 2248-2252
ISSN:
1523-7052
Subject:
ethers; gases; nitrogen; reducing agents
Abstract:
... An attractive palladium-catalyzed reductive aminocarbonylation reaction of allylic ethers has been explored for the synthesis of 3-alkenylquinolin-2(1H)-one derivatives. With Mo(CO)₆ as both CO surrogate and reductant, a variety of 3-alkenylquinolin-2(1H)-ones were obtained in good to excellent yields from o-iodophenol-derived allyl ethers with o-nitrobenzaldehydes as the nitrogen sources. This re ...
DOI:
10.1021/acs.orglett.2c00648

35. Palladium-intercalated MXene membrane for efficient separation of H2/CO2: Combined experimental and modeling work

Author:
Qinsheng Wang; Yiyi Fan; Chengliang Wu; Yun Jin; Claudia Li; Jaka Sunarso; Xiuxia Meng; Naitao Yang
Source:
Journal of membrane science 2022 v.653 pp. 120533
ISSN:
0376-7388
Subject:
design; exhibitions; gases; journals; mathematical models; membrane permeability; nanosheets; physicochemical properties; surfaces
Abstract:
... Research on gas separation membrane has targeted upon maximizing the selectivity and permeance. The development of 2D materials (e.g., MXene) gives a novel avenue to surpass the “trade-off” among the membrane selectivity and permeability. However, randomly stacked nanosheets and the regulation of interlayer spacing for MXene nanosheets hinder the development of MXene membrane. To this end, we desi ...
DOI:
10.1016/j.memsci.2022.120533

36. Poly(benzyl ether)-type additive to engineer glassy polyimide membranes for enhanced gas separations

Author:
Jieun Park; Chang Oh Lee; Ji Woo Kim; Jin Hui Jo; Won Seok Chi; Hyungwoo Kim
Source:
Chemical communications 2022 v.58 no.27 pp. 4364-4367
ISSN:
1364-548X
Subject:
additives; chemical communication; engineering; engineers; ethers; gases; physical properties; separation
Abstract:
... This conceptual study demonstrates the reinforcement of glassy polyimide membranes by incorporating a poly(benzyl ether)-type additive. Traces of the sterically bulky additive alter the overall physical properties of the entire matrix and further enhance the separation properties of small gas molecules. ...
DOI:
10.1039/d1cc07017g

37. Pt/MnOx for toluene mineralization via ozonation catalysis at low temperature: SMSI optimization of surface oxygen species

Author:
Ziyang Xu; Shengpeng Mo; Yanxia Li; Yuchen Zhang; Junliang Wu; Mingli Fu; Xiaojun Niu; Yun Hu; Daiqi Ye
Source:
Chemosphere 2022 v.286 pp. 131754
ISSN:
0045-6535
Subject:
ambient temperature; catalysts; catalytic activity; gases; manganese monoxide; mineralization; oxidation; oxygen; ozonation; ozone; toluene
Abstract:
... The problem of deep oxidation of low concentrations of VOCs in industrial tail gas is exceptionally urgent. The preparation of VOCs ozonation catalyst with a high mineralization rate is still a challenge. In this paper, manganese oxide carriers with different morphologies were synthesized by simple methods and used to catalyze ozone mineralization of toluene after loading Pt nanoparticles efficien ...
DOI:
10.1016/j.chemosphere.2021.131754

38. Recent progress on Schottky sensors based on two-dimensional transition metal dichalcogenides

Author:
Qi Li; Jianping Meng; Zhou Li
Source:
Journal of materials chemistry A 2022 v.10 no.15 pp. 8107-8128
ISSN:
2050-7496
Subject:
biosensors; exhibitions; gases; journals; materials; mechanical properties; selection methods; strains; transition elements
Abstract:
... 2D transition metal dichalcogenides (TMDs), such as MoS₂, MoSe₂, WS₂, and WSe₂, have unique physical, chemical, and mechanical properties, and thus they are ideal sensing materials. 2D TMD-based sensors have proven to exhibit dramatically enhanced sensitivity and selectivity when fabricated with a Schottky junction, which enables their extensive application in photodetection, gas sensing, biosensi ...
DOI:
10.1039/d2ta00075j

39. Review of thermal decomposition, kinetics parameters and evolved gases during pyrolysis of energetic materials using different techniques

Author:
Saad A. EL-Sayed
Source:
Journal of analytical and applied pyrolysis 2022 v.161 pp. 105364
ISSN:
0165-2370
Subject:
chemical control; gases; journals; kinetics; materials; pyrolysis; thermal analysis; thermal properties
Abstract:
... Thermal decomposition, kinetics parameters, and evolved gases during pyrolysis of energetic materials using different techniques have been widely studied experimentally and theoretically since a long time ago and up to now. The overall reaction processes and the conditions at which can be achieved and the quality and quantity of evolved gases obtained during their thermal decomposition still need ...
DOI:
10.1016/j.jaap.2021.105364

40. Solvent-free molten co-assembly of ordered mesoporous carbon for efficiently supported adsorption and separation of SO₂

Author:
Xun Kan; Feiyu Song; Fangyao Li; Shuying Xiao; Fujian Liu; Lilong Jiang
Source:
Journal of materials chemistry A 2022 v.10 no.16 pp. 8817-8825
ISSN:
2050-7496
Subject:
adsorbents; adsorption; carbon; composite polymers; gases; nanocomposites; porous media; silica; sulfur; surface area
Abstract:
... Developing supported polytertiary amine solid adsorbents has great significance for highly reversible capture of SO₂ from industrial tail gas. We report here a novel solvent-free molten co-assembly of block copolymer templates with a phenolic precursor and silica species to rationally design ordered mesoporous carbon–silica nanocomposites, silica and carbon (OMC). The prepared OMC possesses high B ...
DOI:
10.1039/d2ta00408a

41. Study on SO₂ and Cl₂ sensor application of 2D PbSe based on first principles calculations

Author:
Jiwei Zhang; Jianhua Pang; Hui Chen; Guang Wei; Songrui Wei; Jin Yan; Shaowei Jin
Source:
RSC advances 2022 v.12 no.14 pp. 8530-8535
ISSN:
2046-2069
Subject:
adsorption; design; electrons; exhibitions; gases; materials; monitoring; wills
Abstract:
... In this paper, we use 2D PbSe to design a gas sensor to monitor the presence of SO₂ and Cl₂. We use first principles to verify the feasibility of this material, such as atomic structure, band gap, differential charge density and Bader charge. The results show that 2D PbSe can distinctly adsorb SO₂ and Cl₂. Furthermore, the adsorption of SO₂ and Cl₂ will affect the electronic structure of 2D PbSe, ...
DOI:
10.1039/d2ra01249a

42. Study on dry desulfurization performance of MnOx hydrothermally loaded halloysite desulfurizer

Author:
Zhang Lei; Shu Hao; Wang Yusu; Jia Yang
Source:
Environmental technology & innovation 2022 v.26 pp. 102308
ISSN:
2352-1864
Subject:
chitosan; desulfurization; environmental technology; gases; gels; halloysite; hot water treatment; manganese; manganese monoxide; microparticles; pollutants; pollution; temperature
Abstract:
... The quenching process has the characteristics of complex pollutant composition, high purification difficulty, and serious environmental pollution. In order to meet the national emission standards, the coke quenching tail gas containing SO₂ must be treated. In this paper, halloysite is selected as carrier, modified by low-temperature molten salt etching, manganese oxide is supported by hydrothermal ...
DOI:
10.1016/j.eti.2022.102308

43. Systematic study on dynamic pyrolysis behaviors, products, and mechanisms of weathered petroleum-contaminated soil with Fe2O3

Author:
Yuqin Liu; Zongquan Sun; Longjie Ji; Jialun Shen; Shupeng Li; Jie Long; Fujun Ma; Qingbao Gu
Source:
Science of the total environment 2022 v.834 pp. 155197
ISSN:
0048-9697
Subject:
activation energy; carbon dioxide; cost effectiveness; desorption; environment; ferric oxide; gases; pyrolysis; pyrolysis gas chromatography; reaction mechanisms; remediation
Abstract:
... Weathered petroleum-contaminated soil (WPCS) with a high proportion of heavy hydrocarbons is difficult to remediate. Our previous research demonstrated that Fe₂O₃-assisted pyrolysis was a cost-effective technology for the remediation of WPCS. However, the pyrolysis behaviors, products, and mechanisms of the WPCS with Fe₂O₃ are still unclear. In this study, a combination of Thermogravimetric–Fourie ...
DOI:
10.1016/j.scitotenv.2022.155197

44. Technical Challenges of Molecular-Imprinting-Based Optical Sensors for Environmental Pollutants

Author:
Maryam Arabi; Lingxin Chen
Source:
Langmuir 2022 v.38 no.19 pp. 5963-5967
ISSN:
1520-5827
Subject:
antibodies; exhibitions; gases; manufacturing; monitoring; nanoparticles; pollutants; pollution; polymers
Abstract:
... Combating environmental pollution constantly requires new affinity tools to selectively recognize and sensitively detect them. Molecularly imprinted polymers (MIPs) are plastic antibodies that have exhibited great potential as recognition units in optical sensing platforms to monitor wide varieties of environmental pollutants, including ionic species, organic compounds, gases, and even manufacture ...
DOI:
10.1021/acs.langmuir.2c00935

45. Vortex characteristics of a gas cyclone determined with different vortex identification methods

Author:
Zihui Zhang; Sijie Dong; Ruizhi Jin; Kejun Dong; Li'an Hou; Bo Wang
Source:
Powder technology 2022 v.404 pp. 117370
ISSN:
0032-5910
Subject:
fields; gases; methodology; powders; prediction; technology
Abstract:
... This paper characterizes the vortex flow field in a gas cyclone based on different vortex identification methods, including vorticity method, Q criterion, λ₂ criterion, Ω method and Liutex method. Analysis and comparison of isosurfaces of different vortex identification methods indicate that except vorticity method, the vortex core, the eddy flow and the short-circuit flow can be identified direct ...
DOI:
10.1016/j.powtec.2022.117370

46. A DFT study of NO2 and SO2 gas-sensing properties of InX (X = Cl, Br and I) monolayers

Author:
Mingyu Zhao; Daoyu Zhang; Shuai Dong
Source:
Journal of materials science 2021 v.56 no.20 pp. 11828-11837
ISSN:
0022-2461
Subject:
density functional theory; gases; journals; materials science; mechanical stress
Abstract:
... Gas sensors have attracted much attentions due to their applications for alarming dangerous gases. It is important for a gas sensor to find out suitable sensing materials realizing its performance. Two-dimensional materials with high surface-to-volume ratios are ideal candidates acting as gas-sensing materials. Here, we report NO₂ and SO₂ gas-sensing properties of InX (X = Cl, Br, and I) monolayer ...
DOI:
10.1007/s10853-021-06047-1

47. A Proof-of-Concept Algorithm for the Retrieval of Total Column Amount of Trace Gases in a Multi-Dimensional Atmosphere

Author:
Adrian Doicu; Dmitry S. Efremenko; Thomas Trautmann
Source:
Remote Sensing 2021 v.13 no.2 pp. -
ISSN:
2072-4292
Subject:
acceleration; algorithms; gases; geometry; models; nitrogen; principal component analysis; radiative transfer; remote sensing
Abstract:
... An algorithm for the retrieval of total column amount of trace gases in a multi-dimensional atmosphere is designed. The algorithm uses (i) certain differential radiance models with internal and external closures as inversion models, (ii) the iteratively regularized Gauss–Newton method as a regularization tool, and (iii) the spherical harmonics discrete ordinate method (SHDOM) as linearized radiati ...
DOI:
10.3390/rs13020270

48. A combined physical and DEM modelling approach to improve performance of rotary dryers by modifying flights design

Author:
Alireza Ghasemi; Alireza Hasankhoei; Gholamabbas Parsapour; Erfan Razi; Samad Banisi
Source:
Drying technology 2021 v.39 no.4 pp. 548-565
ISSN:
1532-2300
Subject:
clothing; crossing; drying; feeds; flight; gases; grinding; materials; physical models; planting; rotary dryers
Abstract:
... To characterize the drying process in the Gol-E-Gohar pelletizing plant ball mill the material veiling profile (material showering) was studied by physical modeling and DEM. To simulate the trajectory of particles in the dryer in a reasonable period of time the GPU parallel processing was implemented in the DEM codes. After calibration of DEM parameters by using the model dryer, various flight des ...
DOI:
10.1080/07373937.2020.1711522

49. A facile dual-function fluorescent probe for detection of phosgene and nitrite and its applications in portable chemosensor analysis and food analysis

Author:
Lei Yang; Feng Wang; Jie Zhao; Xiaojian Kong; Ke Lu; Mian Yang; Jin Zhang; Zhiwei Sun; Jinmao You
Source:
Talanta 2021 v.221 pp. 121477
ISSN:
0039-9140
Subject:
acetonitrile; aniline; detection limit; dimethyl sulfoxide; fluorescence; fluorescent dyes; food analysis; gases; hydrochloric acid; pH; public health; sodium nitrite; solvents
Abstract:
... Due to the potential threats of phosgene and nitrite to public health and safety, in this work, we first proposed the application of a facile dual-function fluorescent probe 2-(1H-Benzimidazol-2-yl)Aniline (BMA) for the detection of phosgene and nitrite in different solvent environments. BMA had fast response (1 min), high selectivity and sensitivity (the limit of detection was 1.27 nM) to phosgen ...
DOI:
10.1016/j.talanta.2020.121477

50. A flexible microporous framework with temperature-dependent gate-opening behaviours for C2 gases

Author:
Zhenyu Ji; Yerong Fan; Mingyan Wu; Maochun Hong
Source:
Chemical communications 2021 v.57 no.31 pp. 3785-3788
ISSN:
1364-548X
Subject:
ambient temperature; behavior; chemical communication; gases; porous media
Abstract:
... Herein we report a two-fold interpenetrating pillar-layer microporous material, whose framework severely shrinks after losing guest molecules and transforms into a stable nonporous one. More importantly, the guest-free framework has rarely seen temperature-dependent gate-opening behaviours for C2 gases around room temperature. ...
DOI:
10.1039/d1cc00014d

51. A four-quadrant flow regime map for two-phase liquid-solids and gas-solids fluidization systems

Author:
Zeneng Sun; Jesse Zhu
Source:
Powder technology 2021 v.394 pp. 424-438
ISSN:
0032-5910
Subject:
fluidized beds; gases; liquid-solid interface; particles; turbulent flow; velocity
Abstract:
... Previous flow regime mapping work in both gas-solids (GS) and liquid-solids (LS) fluidization systems were carefully reviewed. A set of complete four-quadrant flow regime maps that unifies all the operating modes in both the GS and LS fluidization systems was proposed. The flow directions of the fluid and particle velocities were used as the abscissa and ordinate of the proposed four-quadrant regi ...
DOI:
10.1016/j.powtec.2021.08.050

52. A multifunctional covalently linked graphene–MOF hybrid as an effective chemiresistive gas sensor

Author:
Kolleboyina Jayaramulu; Marilyn Esclance DMello; Kamali Kesavan; Andreas Schneemann; Michal Otyepka; Stepan Kment; Chandrabhas Narayana; Suresh Babu Kalidindi; Rajender S. Varma; Radek Zboril; Roland A. Fischer
Source:
Journal of materials chemistry A 2021 v.9 no.32 pp. 17434-17441
ISSN:
2050-7496
Subject:
amides; amines; carbon dioxide; coordination polymers; electrical resistance; gases; graphene; hydrogen bonding; sensors (equipment); thermal stability
Abstract:
... A hybrid of GA@UiO-66-NH₂ was synthesized based on the covalent assembly of graphene acid (GA) and the amine functionalized UiO-66 metal–organic framework through amide bonds. This strategy endows the material with unique properties, such as hierarchical pores, a porous conductive network decorated with functional groups, a high specific surface area, and a good chemical and thermal stability. The ...
DOI:
10.1039/d1ta03246a

53. A new approach to off-design performance analysis of gas turbine engines and its application

Author:
S.M. Hosseinimaab; A.M. Tousi
Source:
Energy conversion and management 2021 v.243 pp. 114411
ISSN:
0196-8904
Subject:
administrative management; compressors; energy conservation; energy conversion; environmental impact; equations; gas turbine engines; gases; methodology; power lines; problem solving; test rigs; turbines; wills
Abstract:
... This paper presents a new method to formulate the problem of simulating and off-design performance analysis of gas turbine engines and organizing this problem to solve. This method, without any simplification, follows an identical procedure for off-design analysis of all configurations of gas turbines. The method is based on solving an equations system, modular and flexible, and requires the least ...
DOI:
10.1016/j.enconman.2021.114411

54. A novel computational simulation approach to study biofilm significance in a packed-bed biooxidation reactor

Author:
Mohammad Abbasi; Javad Aminian-Dehkordi; Seyyed Mohammad Mousavi
Source:
Chemosphere 2021 v.262 pp. 127680
ISSN:
0045-6535
Subject:
Leptospirillum ferrooxidans; acid mine drainage; algorithms; biofilm; bioleaching; coal; design; desulfurization; flow; gases; literature; models; particles; porosity; thickness
Abstract:
... Fe (II) biooxidation has recently gained significant interest. It plays a key role in a number of environmental and industrial processes such as bioleaching, acid mine drainage treatment, desulphurization of sour gases, and coal desulphurization. In this work, a three-dimensional CFD model for gas-liquid flow in a lab-scale packed-bed biooxidation reactor is used. The reactor is randomly packed wi ...
DOI:
10.1016/j.chemosphere.2020.127680

55. A novel utilization of ferronickel slag as a source of magnesium metal and ferroalloy production

Author:
Zulfiadi Zulhan; Nurdedani Agustina
Source:
Journal of cleaner production 2021 v.292 pp. 125307
ISSN:
0959-6526
Subject:
carbon monoxide; environment; evaporation; gases; hazardous waste; iron oxides; laterites; magnesium; magnesium oxide; nickel; research; silica; silicon; slags; stainless steel; thermodynamics
Abstract:
... Processing laterite nickel ore by the pyrometallurgical route produces ferronickel slag as a byproduct. The main constituents of ferronickel slag are silicon oxide, magnesium oxide, and iron oxide. The amount of ferronickel slag has sharply increased in recent years as a result of the increasing demand for ferronickel and stainless steel. Some regions recognize ferronickel slag as hazardous waste, ...
DOI:
10.1016/j.jclepro.2020.125307

56. A review on the potentials of flare gas recovery applications in Iran

Author:
Amirhossein Khalili-Garakani; Mona Iravaninia; Mahya Nezhadfard
Source:
Journal of cleaner production 2021 v.279 pp. 123345
ISSN:
0959-6526
Subject:
burning; emissions; exhibitions; financial economics; gases; greenhouse gases; methodology; power generation; value-added products; Iran
Abstract:
... Due to safety and control considerations, gas flaring is inevitable in chemical processes. In 2018, 17.3 billion cubic meters of flare gas had burned in Iran, which implies a significant economic loss and the emission of almost 150 million metric tons of greenhouse gases to the atmosphere. This significant amount of flaring has made Iran the third largest flaring country in the world. Various meth ...
DOI:
10.1016/j.jclepro.2020.123345

57. A study of anode area physical parameters of asymmetric combined gas discharge

Author:
Boris Brzhozovskii; Marina Brovkova; Sergey Gestrin; Elena Zinina; Vladimir Martynov
Source:
Heliyon 2021 v.7 no.5 pp. e07006
ISSN:
2405-8440
Subject:
anodes; electrons; energy; gases; microwave radiation; microwave treatment; surfaces
Abstract:
... The layered structure properties of an asymmetric combined gas discharge have been studied. The main physical parameters of the plasma in the zone of electron acceleration to high energies of tens and hundreds of electron-volts at various values of the supplied microwave power were determined based on the analysis of the discharge current-voltage characteristics. The effect of combined discharge p ...
DOI:
10.1016/j.heliyon.2021.e07006

58. An Illustrative Analysis of Atypical Gas Production Profiles Obtained from In Vitro Digestibility Studies Using Fecal Inoculum

Author:
Mewa S. Dhanoa; Secundino López; Christopher D. Powell; Ruth Sanderson; Jennifer L. Ellis; Jo-Anne M. D. Murray; Anna Garber; Barbara A. Williams; James France
Source:
Animals 2021 v.11 no.4 pp. -
ISSN:
2076-2615
Subject:
animals; digestibility; equations; gases; inoculum; mathematical models
Abstract:
... Gas production profiles typically show a monotonically increasing monophasic pattern. However, atypical gas production profiles exist whereby at least two consecutive phases of gas production or additional extraneous features that distort the typical profile are present. Such profiles are more likely to occur with the use of a fecal inoculum and are much less well described. The presence of multip ...
DOI:
10.3390/ani11041069

59. An Overview of Ammonia Separation by Ionic Liquids

Author:
Lu Zhang; Haifeng Dong; Shaojuan Zeng; Zongyuan Hu; Shahid Hussain; Xiangping Zhang
Source:
Industrial & engineering chemistry process design and development 2021 v.60 no.19 pp. 6908-6924
ISSN:
1520-5045
Subject:
absorption; ammonia; diffusivity; energy conservation; gases; industrial applications; mass transfer; pollutants; pollution; process design; solubility; toxicity; vapor pressure
Abstract:
... Ammonia (NH₃) is an important chemical in several fields, such as agriculture, pharmaceutical, material, and chemicals manufacturing. However, NH₃ is a toxic gaseous pollutant and NH₃ release results in environment pollution. Minimizing NH₃ emission is of great significance for solving NH₃-related environmental issues and promoting the reuse of NH₃ resources. Ionic liquids (ILs) are energy-saving ...
DOI:
10.1021/acs.iecr.1c00780

60. An X-ray microtomography study of particle morphology and the packing behaviour of metal powders during filling, compaction and ball indentation processes

Author:
Mozhdeh Mehrabi; Ali Hassanpour; Andrew Bayly
Source:
Powder technology 2021 v.385 pp. 250-263
ISSN:
0032-5910
Subject:
additives; atomization; behavior; filling (processing); friction; gases; manufacturing; metals; micro-computed tomography; particles; powders; walls
Abstract:
... The ball indentation method could be used to characterise powder packing and flow behaviours, particularly for the spreading stage of additive manufacturing (AM). However, there is no sufficient understanding of the powder packing state during the indentation process. In this paper, the X-ray microtomography has been used to characterise the particle morphology and visualize the packing behaviour ...
DOI:
10.1016/j.powtec.2021.02.069

61. An innovative sliding mode load controller for gas turbine power generators: Design and experimental validation via real-time simulation

Author:
A. Palmieri; D. Lanzarotto; S. Cacciacarne; I. Torre; A. Bonfiglio
Source:
Energy 2021 v.217 pp. 119363
ISSN:
0360-5442
Subject:
controllers; design; energy; experimental design; gas production (biological); gases; generators (equipment); microprocessors; power plants; turbines
Abstract:
... This paper deals with the design of an innovative load controller for heavy-duty gas turbine (GT) power generators and with its practical implementation on real industrial power plants. A robust controller based on the Sliding Mode control technique is designed, in order to improve the performance of the GT system with respect to the traditional Proportional-Integral-Derivative regulation.The main ...
DOI:
10.1016/j.energy.2020.119363

62. Analyzing the increasing importance of nitrate in Taiwan from long-term trend of measurements

Author:
Ming-Tung Chuang; Charles C-K. Chou; Ta-Chih Hsiao; Kuan-yu Lin; Neng-Huei Lin; Wen-Yinn Lin; Sheng-Hsiang Wang; Shantanu Kumar Pani; Chung-Te Lee
Source:
Atmospheric environment 2021 v.267 pp. 118749
ISSN:
1352-2310
Subject:
cities; control methods; environment; gases; issues and policy; measurement; nitrates; pollutants; sampling; wills; Taiwan
Abstract:
... In recent years, many sample analyses have revealed that the proportion of nitrate (NO₃⁻) in PM₂.₅ frequently exceeds that of other major PM₂.₅ species, such as SO₄²⁻, NH₄⁺, and OC. This phenomenon has attracted considerable attention because it could change the direction of PM₂.₅ control policies. The present study analyzed the long-term trends of gaseous pollutants, PM₂.₅ and PM₂.₅ species. PM₂. ...
DOI:
10.1016/j.atmosenv.2021.118749

63. Anomalous electron-electron interactions in epitaxial graphene on SiC

Author:
Y. Yang; K.H. Gao; W.J. Wang; G. Yu; Y. Sun; X.H. Zhang; Z.Q. Li
Source:
Carbon 2021 v.184 pp. 287-294
ISSN:
0008-6223
Subject:
absorption; electrical conductivity; electrons; gases; graphene; silicon carbide; temperature
Abstract:
... Electron-electron interactions (EEI) play a pivotal role in the transport behavior of carriers confined in a two-dimensional system. The strength of the interaction can be tuned by changing carrier concentration in a conventional two-dimensional system, while it expectedly cannot be controlled in monolayer graphene with a linear dispersion relation since the interaction parameter is not related to ...
DOI:
10.1016/j.carbon.2021.08.028

64. Automated separation, preconcentration and measurement of 90Sr in liquid samples with complex matrices by online ion exchange chromatography coupled with inductively coupled plasma mass spectrometry (ICP-MS)

Author:
Wei Wang; R. Douglas Evans; Karla Newman; Rashid Khokhar
Source:
Talanta 2021 v.222 pp. 121488
ISSN:
0039-9140
Subject:
atomic absorption spectrometry; automation; detection limit; gases; groundwater; hydrogen; ion exchange chromatography; lakes; liquids; oxygen; processing time; radiometry; radionuclides; rapid methods; resins; sample size; seawater; solid phase extraction; strontium; tandem mass spectrometry; wastewater
Abstract:
... An online separation and preconcentration method, employing a lab-on-valve system using solid phase extraction, followed by inductively coupled plasma tandem mass spectrometry (ICP-MS/MS), was developed for the analysis of ⁹⁰Sr. The ⁹⁰Sr was separated from ⁹⁰Zr, an isobaric interference present at high concentrations in many samples, and other matrix components using a dual-column setup (Eichrom D ...
DOI:
10.1016/j.talanta.2020.121488

65. Blend Miscibility of Poly(ethylene terephthalate) and Aromatic Polyesters from Salicylic Acid

Author:
Hee Joong Kim; Xiayu Peng; Youngsu Shin; Marc A. Hillmyer; Christopher J. Ellison
Source:
Journal of physical chemistry 2021 v.125 no.1 pp. 450-460
ISSN:
1520-5207
Subject:
chemical structure; gases; journals; mechanical properties; melting point; mixing; polyesters; salicylic acid
Abstract:
... Poly(ethylene terephthalate) (PET) is one of the most prevalent polymers in the world due to its combined thermal, mechanical, and gas barrier attributes. Blending PET with other polymers is an appealing strategy to further tailor properties to meet the needs of an even more diverse range of applications. Most blends with PET are macrophase-separated; only a few miscible systems have been reported ...
DOI:
10.1021/acs.jpcb.0c09322

66. CdO–ZnO nanorices for enhanced and selective formaldehyde gas sensing applications

Author:
Ahmad Umar; Ahmed A. Ibrahim; Rajesh Kumar; Hassan Algadi; Hasan Albargi; Mabkhoot A. Alsairi; Mohsen A.M. Alhmami; Wen Zeng; Faheem Ahmed; Sheikh Akbar
Source:
Environmental research 2021 v.200 pp. 111377
ISSN:
0013-9351
Subject:
ammonia; cadmium; carbon monoxide; ethanol; formaldehyde; gases; hot water treatment; methane; methanol; nanocomposites; nanoflowers; nanoparticles; sensors (equipment); zinc oxide
Abstract:
... This paper reports synthesis, properties and gas sensing applications of ZnO nanoflowers and CdO–ZnO nanorices prepared by hydrothermal process. The morphological characterizations confirmed the formation of well-defined nanoflowers and nanorices structures for ZnO and CdO–ZnO nanomaterials, respectively. The structural properties revealed the wurtzite hexagonal phase of the synthesized materials. ...
DOI:
10.1016/j.envres.2021.111377

67. Chemical recycling and use of various types of concrete waste: A review

Author:
Hsing-Jung Ho; Atsushi Iizuka; Etsuro Shibata
Source:
Journal of cleaner production 2021 v.284 pp. 124785
ISSN:
0959-6526
Subject:
calcium; carbon dioxide; carbonation; cement; concrete; construction materials; desulfurization; environmental impact; gases; hydroxyapatite; industry; literature; reaction mechanisms; recycling; research; soil; surveys; wastes; water
Abstract:
... Concrete is one of the most widely used materials globally, and therefore huge amounts of concrete waste, which is usually strongly alkaline, are generated. Concrete waste recycling and use are essential to avoid negative environmental impacts, and a comprehensive literature review is required in this regard. Effective recycling and the use of chemicals in concrete waste could allow for a sustaina ...
DOI:
10.1016/j.jclepro.2020.124785

68. Cleanly synthesizing rotten potato-based activated carbon for supercapacitor by self-catalytic activation

Author:
Ao Wang; Kang Sun; Ruting Xu; Yunjuan Sun; Jianchun Jiang
Source:
Journal of cleaner production 2021 v.283 pp. 125385
ISSN:
0959-6526
Subject:
activated carbon; biomass; capacitance; catalysts; electrochemical capacitors; energy density; exhibitions; gases; materials; metals; potatoes; pyrolysis; reliability; surface area; wastes
Abstract:
... A novel self-catalytic activation approach is developed for the preparation of hierarchically porous carbon from rotten potato wastes. Metals already existing within the rotten potatoes were used as the catalysts and gases emitted during pyrolysis were used as the activating reagents, leading to the cleaner production of hierarchically porous carbon materials without additional reagents. The as-ma ...
DOI:
10.1016/j.jclepro.2020.125385

69. Comparison of the Analytical Capabilities of Different Chromatomembrane Gas Extraction Techniques

Author:
O. V. Rodinkov; A. S. Bugaichenko; L. N. Moskvin
Source:
Journal of analytical chemistry 2021 v.76 no.9 pp. 1051-1057
ISSN:
1061-9348
Subject:
analytical chemistry; flow; gases; journals
Abstract:
... The analytical capabilities of various schemes of the relative movement of the flows of an analyzed aqueous phase and an extractant gas in chromatomembrane gas extraction were compared. It was demonstrated that a direct-flow scheme is preferable when the efficiency of the system increases with the flow rate of the extractant gas (online analysis), whereas a two-dimensional scheme is preferable in ...
DOI:
10.1134/S1061934821090094

70. Contributions of Boudouard reaction to NO electrocatalytic reduction by Fe-loaded carbon materials in the presence of O2

Author:
Wenyi Tan; Huangang Shi; Jifa Qu; Yang Yu; Hang Li; Zheng Tao
Source:
Journal of catalysis 2021 v.394 pp. 30-39
ISSN:
0021-9517
Subject:
activated carbon; anodes; catalytic activity; cathodes; density; electrochemistry; electrolytes; fuel cells; gases; gasoline engines; materials; oxygen
Abstract:
... The effects of solid carbon on NO electrocatalytic reduction in the presence of O₂ content, as low as can be found in a gasoline engine, were investigated. Tubular solid-state fuel cells filled with Fe-loaded carbon materials (Fe-loaded activated carbon, Fe-AC, and Fe-loaded carbon black, Fe-BC) were fabricated for electrochemical reduction in the configuration of LSM as the cathode, NiO-YSZ mixed ...
DOI:
10.1016/j.jcat.2020.11.034

71. Development of dimethyl ether synthesis processes using by-product gas from a steel-making plant: Single-vs. two-step processes

Author:
Hyeon Park; Yesol Woo; Hyun Seung Jung; Gookhee Kim; Jong Wook Bae; Myung-June Park
Source:
Journal of cleaner production 2021 v.326 pp. 129367
ISSN:
0959-6526
Subject:
byproducts; carbon; carbon dioxide; catalysts; economic feasibility; gases; methanol; ovens; streams; zeolites
Abstract:
... This work addresses the development of a DME synthesis process from a mixture of coke oven gas (COG) and FINEX tail gas (FTG) from a steel-making plant. Two different syngas-to-DME processes were considered: one using two separate reactors for the methanol synthesis over Cu–ZnO–Al₂O₃ (CZA) and the methanol dehydration over ferrierite (FER) zeolite catalysts, and the other using a single reactor by ...
DOI:
10.1016/j.jclepro.2021.129367

72. Different bubble behaviors in gas-solid fluidized bed of Geldart group A and group C+ particles

Author:
Yandaizi Zhou; Jingrui Xu; Jesse Zhu
Source:
Powder technology 2021 v.384 pp. 431-441
ISSN:
0032-5910
Subject:
behavior; bubbles; fluidized beds; gases; particles; powders; technology
Abstract:
... A gas-solid fluidized bed reactor composed of Geldart Group C fine powers with the addition of nano-additives (Group C⁺) has recently been shown to have higher reaction conversion and better contact efficiency than the same reactor composed of Geldart Group A particles due to the increased gas holdup in the dense phase and the increased gas-solid interfacial area. Based on our earlier findings tha ...
DOI:
10.1016/j.powtec.2021.02.033

73. Double-Walled Zn₃₆@Zn₁₀₄ Multicomponent Senary Metal–Organic Polyhedral Framework and Its Isoreticular Evolution

Author:
Zhiyong Lu; Liting Du; Ruyong Guo; Guangbao Zhang; Jingui Duan; Jianfeng Zhang; Lin Han; Junfeng Bai; Joseph T. Hupp
Source:
Journal of the American Chemical Society 2021 v.143 no.43 pp. 17942-17946
ISSN:
1520-5126
Subject:
Americans; coordination polymers; gases; journals; trapping; traps
Abstract:
... Metal–organic polyhedral frameworks are attractive in gas storage and separation due to large voids with windows that can serve as traps for guest molecules. Introducing multivariant/multicomponent functionalities in them are ways of improving performances for certain targets. The high compatibility of organic linkers can generate multivariant MOFs, but by far, the diversity of secondary building ...
DOI:
10.1021/jacs.1c08286

74. ENERGY-EXERGY diagrams for states and energy and exergy balance equations representation

Author:
V.A.F. Costa
Source:
Energy 2021 v.218 pp. 119506
ISSN:
0360-5442
Subject:
compressors; energy balance; energy efficiency; equations; exergy; flow; gases; heat; heat exchangers; heat pumps; labor force; learning; process energy; pumps; refrigerators; specific heat; turbines
Abstract:
... This work proposes energy-exergy diagrams that clarify the relationships between energy and exergy, relevant for both the exergy teaching/learning process and for energy and exergy analyses. It proposes the energy-exergy diagram for states representation, where are represented the non-flow and flow energy-exergy for ideal gases of constant specific heats. After that is proposed the diagram for the ...
DOI:
10.1016/j.energy.2020.119506

75. Effect of applied stress on creep properties of Sanicro 25 welded joint made with a composition-matched weld filler metal

Author:
Zhengxin Tang; Hongyang Jing; Yu Zhang; Lianyong Xu; Lei Zhao; Yongdian Han; Zhaofu Zhang; Yalin Gao
Source:
Journal of materials science 2021 v.56 no.8 pp. 5269-5282
ISSN:
0022-2461
Subject:
carbides; cracking; deformation; gases; grains; journals; materials; power plants; testing; tungsten; welding
Abstract:
... Sanicro 25 is a candidate material for reheaters and superheaters used in 650–700 °C advanced ultra-supercritical power plants. A composition-matched weld filler metal has been developed to join Sanicro 25 tubes through tungsten inert gas welding. Creep tests of the Sanicro 25 welded joint were conducted at 973 K under a stress of 180–240 MPa. The creep lifetime decreased with an increase in appli ...
DOI:
10.1007/s10853-020-05605-3

76. Effect of grinding nozzles pressure on particle and fluid flow patterns in a spiral jet mill

Author:
Lewis Scott; Antonia Borissova; Alan Burns; Mojtaba Ghadiri
Source:
Powder technology 2021 v.394 pp. 439-447
ISSN:
0032-5910
Subject:
energy; fields; forces; gases; grinding; hydrodynamics; mathematical models; nozzles; particles; powders; pressure; shears; walls
Abstract:
... Spiral jet mills utilise high-pressure gas jets, which induce particle breakage by collisions. Appropriately angled jets force particles to circulate in dense phase near the wall due to the centrifugal field. Moving radially inwards towards the mill centre, the two-phase dense flow is transformed into a lean phase and fine particles are entrained out by the fluid drag. Here we analyse the effect o ...
DOI:
10.1016/j.powtec.2021.07.090

77. Effect of phosphorus on soot formation and flame retardancy in fires

Author:
Haqing Guo; Richard N. Walters; Richard E. Lyon; Sean Crowley
Source:
Fire safety journal 2021 v.120 pp. 103068
ISSN:
0379-7112
Subject:
active sites; burning; carbon monoxide; combustion efficiency; dehydrogenation; epoxides; fires; gases; heat; oxidation; phosphorus; pollution load; polymers; soot
Abstract:
... The mechanism by which phosphorus imparts flame retardancy to a burning polymeric solid remains controversial because of the complex coupling of gas and condensed phase reactions. To address that, an organophosphorous compound was mixed into epoxy at different concentrations and burned under diffusion flame conditions. The yield of carbon monoxide and soot was found to increase in the presence of ...
DOI:
10.1016/j.firesaf.2020.103068

78. Efficient scale-up synthesis and hydrogen separation of hollow fiber DD3R zeolite membranes

Author:
Peng Du; Jieyu Song; Xuerui Wang; Yuting Zhang; Jixian Xie; Gang Liu; Yongli Liu; Zhenwei Wang; Zhou Hong; Xuehong Gu
Source:
Journal of membrane science 2021 v.636 pp. 119546
ISSN:
0376-7388
Subject:
alkalinity; carbon dioxide; ethylene; gases; hydrogen; industry; zeolites
Abstract:
... Efficient hydrogen (H₂) separation is highly desired from the cracked tail gas of ethylene plant. In this work, DD3R zeolite membranes have been evaluated for potential application in H₂ separation under harsh conditions. We developed an efficient scale-up synthesis of hollow fiber DD3R zeolite membranes. The alkalinity of synthesis solution was optimized to endow the good reproducibility of high- ...
DOI:
10.1016/j.memsci.2021.119546

79. Emergence of Coupled Rotor Dynamics in Metal–Organic Frameworks via Tuned Steric Interactions

Author:
Adrian Gonzalez-Nelson; Srinidhi Mula; Mantas Šimėnas; Sergejus Balčiu̅nas; Adam R. Altenhof; Cameron S. Vojvodin; Stefano Canossa; Ju̅ras Banys; Robert W. Schurko; François-Xavier Coudert; Monique A. van der Veen
Source:
Journal of the American Chemical Society 2021 v.143 no.31 pp. 12053-12062
ISSN:
1520-5126
Subject:
Americans; adsorption; cooperatives; coordination polymers; engineers; frequency; gases; journals; researchers; rotors; topology
Abstract:
... The organic components in metal–organic frameworks (MOFs) are unique: they are embedded in a crystalline lattice, yet, as they are separated from each other by tunable free space, a large variety of dynamic behavior can emerge. These rotational dynamics of the organic linkers are especially important due to their influence over properties such as gas adsorption and kinetics of guest release. To fu ...
DOI:
10.1021/jacs.1c03630

80. Environmental Conditions and Gas Concentrations in Deep-Pit Finishing Cattle Facilities: A Descriptive Study

Author:
Erin L. Cortus; Brian P. Hetchler; Mindy J. Spiehs; Warren C Rusche
Source:
Transactions of the ASABE v.64 no.1 pp. 31-48
ISSN:
2151-0032
Subject:
air flow; air quality; air temperature; ambient temperature; ammonia; ammonium nitrogen; animal pens; autumn; barns; beef cattle; carbon dioxide; cattle finishing; cattle housing; cattle manure; feed composition; floors; gas emissions; gases; manure storage; phosphates; pollution load; potassium; seasonal variation; spring; sulfur; summer; total nitrogen; water quality; wind speed; Minnesota
Abstract:
... HighlightsTemperature and air movement in the naturally ventilated barns correlated to ambient conditions.Manure N-P-K values related to solids distribution in the manure storage.Ammonia and combined sulfur concentrations increased with closer proximity to the manure surface.Influences of manure properties, airflow conditions, barn design, and management were evident for gas concentrations.Abstrac ...
Handle:
10113/7261461
DOI:
10.13031/trans.14040

81. Evaluation of power and freshwater production based on integrated gas turbine, S-CO2, and ORC cycles with RO desalination unit

Author:
M.H. Khoshgoftar Manesh; P. Firouzi; S. Kabiri; A.M. Blanco-Marigorta
Source:
Energy conversion and management 2021 v.228 pp. 113607
ISSN:
0196-8904
Subject:
administrative management; carbon dioxide; compressors; desalination; electricity; energy conversion; energy use and consumption; freshwater; gases; paper; power generation; pumps; reverse osmosis; seawater; turbines; waste heat recovery; wastes
Abstract:
... In this paper, the simultaneous production of power and freshwater by the integration of a gas turbine (GT), a supercritical carbon dioxide (S-CO₂) cycle, an organic Rankine cycle (ORC) and a reverse osmosis (RO) desalination unit is proposed. The S-CO₂ and the ORC are bottoming cycles that recover the waste heat from the exhaust gases of the GT. A RO seawater desalination unit has been added to t ...
DOI:
10.1016/j.enconman.2020.113607

82. Exceptional High and Reversible Ammonia Uptake by Two Dimension Few-layer BiI₃ Nanosheets

Author:
Huiyong Wang; Tao Song; Zhiyong Li; Jikuan Qiu; Yang Zhao; Hucheng Zhang; Jianji Wang
Source:
ACS applied materials & interfaces 2021 v.13 no.22 pp. 25918-25925
ISSN:
1944-8252
Subject:
adsorbents; adsorption; ammonia; carbon dioxide; gases; human health; liquids; nanosheets; public safety
Abstract:
... The emission of NH₃ into atmosphere is seriously harmful for human health and public safety, thus the capture and recovery of NH₃ from ammonia emissions is highly desirable. In recent years, many kinds of solid adsorbents have been exploited to absorb NH₃. However, these materials do not show the advantages of high uptake capacity and good recyclability at the same time. Here, nontoxic and low cos ...
DOI:
10.1021/acsami.1c03261

83. Experimental study on defluidization behaviours and its influence factors during gas switching fluidization

Author:
Haifeng Lu; Jiakun Cao; Domenico Macri; Xiaolei Guo; Haifeng Liu; Xin Gong
Source:
Powder technology 2021 v.380 pp. 106-114
ISSN:
0032-5910
Subject:
behavior; bubbles; carbon dioxide; catalytic cracking; duration; emulsions; flow; gases; height; helium; nitrogen; particles; pressure; supply; velocity
Abstract:
... In this work, an investigation on the fluidization behaviour of solid particles was carried out while the fluidizing agent was switched from one gas to another with an equal volumetric flow. Four different gases, namely helium, nitrogen, argon and carbon dioxide (He, N₂, Ar and CO₂), were adopted as fluidizing agents, and fluid catalytic cracking (FCC) was used as the experimental material. When c ...
DOI:
10.1016/j.powtec.2020.11.047

84. Experimental study on the size segregation of binary particles in a moving granular bed

Author:
Mengxiang Jiang; Ping Wu; Likang Hu; Heping Fu; Biduan Chen; Li Wang
Source:
Powder technology 2021 v.388 pp. 82-89
ISSN:
0032-5910
Subject:
cameras; filters; gases; granules; mixtures; particles; powders; technology
Abstract:
... The moving granular filter technology based on size segregation is a promising technology for hot gas cleanup. A moving granular bed that can separate a mixture of particles spontaneously and replace the particles continuously layer by layer was design in this work. We experimentally studied the effects of free slope length (L), particle replacement rate (Q), and inlet large particle mass fraction ...
DOI:
10.1016/j.powtec.2021.04.082

85. Feasibility of preparing red mud-based cementitious materials: Synergistic utilization of industrial solid waste, waste heat, and tail gas

Author:
Zhaofeng Li; Jian Zhang; Shucai Li; Chunjin Lin; Yifan Gao; Chao Liu
Source:
Journal of cleaner production 2021 v.285 pp. 124896
ISSN:
0959-6526
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; aluminum; carbonation; coal; compression strength; flue gas desulfurization; fly ash; gases; gypsum; heat; industrial byproducts; industry; light; mass; slags; solid wastes; steel; strength (mechanics); temperature; testing; transportation
Abstract:
... In order to address the environmental problems caused by red mud and other industrial by-products, a new concept was proposed to use red mud to prepare cementitious materials by incorporating other solid wastes, waste heat, and tail gas. The feasibility of this synergistic concept was verified by laboratory-scale tests, and the effect of tail gas and waste heat on solid wastes was revealed by FTIR ...
DOI:
10.1016/j.jclepro.2020.124896

86. Fire dynamics in mass timber compartments

Author:
Carmen Gorska; Juan P. Hidalgo; Jose L. Torero
Source:
Fire safety journal 2021 v.120 pp. 103098
ISSN:
0379-7112
Subject:
burning; construction industry; fire safety; fuel loading; gases; heat; mass timber; mixing; models; temperature
Abstract:
... Since Engineered Wood Products (EWPs) have entered the building industry as structural elements, several fire safety concerns have arisen, especially for high-rise structures.The combustible nature of timber suggests that the current models and correlations for compartment fire dynamics might not apply to compartments with timber boundaries, due to the increased fuel load and its redistribution ac ...
DOI:
10.1016/j.firesaf.2020.103098

87. Fluidization behaviors of nanoparticle agglomerates with high initial bed heights

Author:
Huanpeng Liu; Shaowei Wang
Source:
Powder technology 2021 v.388 pp. 122-128
ISSN:
0032-5910
Subject:
behavior; exhibitions; gases; height; mass transfer; nanoparticles; powders; solids
Abstract:
... The fluidization behaviors of SiO₂ nanoparticles with high initial bed heights of 8–24 cm are investigated experimentally. The effects of the initial bed height and the superficial gas velocity on the minimum fluidization velocity, bed heights, axial solid distributions and the agglomerate diameter are discussed. The results show that the minimum fluidization velocity decreases significantly with ...
DOI:
10.1016/j.powtec.2021.04.088

88. Gas adsorption in the topologically disordered Fe-BTC framework

Author:
Adam F. Sapnik; Christopher W. Ashling; Lauren K. Macreadie; Seok J. Lee; Timothy Johnson; Shane G. Telfer; Thomas D. Bennett
Source:
Journal of materials chemistry A 2021 v.9 no.47 pp. 27019-27027
ISSN:
2050-7496
Subject:
adsorption; coordination polymers; exhibitions; gases; journals; solutions; thermodynamics
Abstract:
... Disordered metal–organic frameworks are emerging as an attractive class of functional materials, however their applications in gas storage and separation have yet to be fully explored. Here, we investigate gas adsorption in the topologically disordered Fe-BTC framework and its crystalline counterpart, MIL-100. Despite their similar chemistry and local structure, they exhibit very different sorptio ...
DOI:
10.1039/d1ta08449f

89. Gas burner experiments conducted in modern residential style structures

Author:
Mark McKinnon; Craig Weinschenk; Daniel Madrzykowski; Keith Stakes
Source:
Data in Brief 2021 v.39 pp. 107624
ISSN:
2352-3409
Subject:
burners; data collection; fires; gases; models; thermocouples
Abstract:
... The fire modeling community currently lacks full-scale data from tests conducted in realistic residential-style structures. Controlled gas burner tests were conducted in purpose-built single- and two-story structures instrumented throughout with thermocouples, pressure transducers, and bi-directional probes. Experiments consisted of sequences of ventilation events. The data collected in these test ...
DOI:
10.1016/j.dib.2021.107624

90. Gas channel rerouting in a primordial enzyme: Structural insights of the carbon-monoxide dehydrogenase/acetyl-CoA synthase complex from the acetogen Clostridium autoethanogenum

Author:
Olivier N. Lemaire; Tristan Wagner
Source:
Biochimica et biophysica acta 2021 v.1862 no.1 pp. 148330
ISSN:
0005-2728
Subject:
Clostridium autoethanogenum; Moorella thermoacetica; acetyl coenzyme A; active sites; architecture; bacteria; biofuels; carbon; carbon monoxide; crystal structure; crystallization; energy; energy conservation; enzymes; evolution; gases; metabolism; models; monitoring; wastes
Abstract:
... Clostridium autoethanogenum, the bacterial model for biological conversion of waste gases into biofuels, grows under extreme carbon-monoxide (CO) concentrations. The strictly anaerobic bacterium derives its entire cellular energy and carbon from this poisonous gas, therefore requiring efficient molecular machineries for CO-conversion. Here, we structurally and biochemically characterized the key e ...
DOI:
10.1016/j.bbabio.2020.148330

91. Gas-mediated cancer therapy

Author:
Hang Zhang; Mengying Xie; Honghong Chen; Sneha Bavi; Muhammad Sohail; Rohit Bavi
Source:
Environmental chemistry letters 2021 v.19 no.1 pp. 149-166
ISSN:
1610-3653
Subject:
antineoplastic agents; bioactive properties; cancer therapy; carbon dioxide; carbon monoxide; gases; hydrogen; hydrogen sulfide; nanocarriers; nanomedicine; oxygen; physicochemical properties; sulfur dioxide
Abstract:
... Gas therapy is actually drawing attention in nanomedicine as a safe and therapeutically efficient technique. Indeed, the design of stimuli-responsive nanocarriers with controlled release is encouraging to heal without any risk of gas poisoning. Here, we review recent developments of gas nanogenerators and gas-releasing molecules for controlled and targeted gas therapy in cancer nanomedicine. We pr ...
DOI:
10.1007/s10311-020-01062-1

92. Gas-mediated cancer therapy combined with starvation therapy, ultrasound therapy, chemotherapy, radiotherapy, and photodynamic therapy: a review

Author:
Sambhaji Balaso Thakar; Pradnya Namdev Ghorpade; Bilal Shaker; Jingyu Lee; Dokyun Na
Source:
Environmental chemistry letters 2021 v.19 no.4 pp. 2981-2993
ISSN:
1610-3653
Subject:
antineoplastic activity; bioimaging; cancer therapy; carbon dioxide; carbon monoxide; gases; hydrogen; hydrogen sulfide; nanocarriers; nanomedicine; nitric oxide; oxygen; photochemotherapy; precision medicine; radiotherapy; starvation; sulfur dioxide; synergism; systematic review; ultrasonic treatment; ultrasonography
Abstract:
... Gas therapy appears promising in treating cancer, ischemia-reperfusion injury, heart attack, and acute situations of shock. Gas therapy is also becoming a good choice in preventive medicine against dementia, reducing cancer occurrence, cardiovascular diseases, and delaying aging. On-demand gas release allows precision therapy with few risks of gas poisoning. Here, we review targeted and controlled ...
DOI:
10.1007/s10311-021-01218-7

93. Generation and stability of bulk nanobubbles: A review and perspective

Author:
Limin Zhou; Shuo Wang; Lijuan Zhang; Jun Hu
Source:
Current opinion in colloid & interface science 2021 v.53 pp. 101439
ISSN:
1359-0294
Subject:
attitudes and opinions; bubbles; colloids; gases; nanobubbles; prediction; research
Abstract:
... Bulk nanobubbles (BNBs) are submicron gaseous domains dispersed in solutions, which are supposed to survive for several hours or even days. In recent years, there has been a rapid growth in the research and extraordinary applications of BNBs. Conventional theories based on gas diffusion and Laplace pressure, however, predicted that nanoscale gas bubbles in water should dissolve within microseconds ...
DOI:
10.1016/j.cocis.2021.101439

94. Heterostructures between a tin-based intermetallic compound and a layered semiconductor for gas sensing

Author:
Jusheng Bao; Shaoyu Zeng; Jie Dai; Xiaoshan Wang; Qiang Liu; Hai Li; Xiao Huang; Wei Huang
Source:
Chemical communications 2021 v.57 no.45 pp. 5590-5593
ISSN:
1364-548X
Subject:
adsorption; chemical communication; exhibitions; gases; nanoparticles; semiconductors
Abstract:
... SnS₂ nanoplates are used as sacrificial templates to facilitate the in situ growth of intermetallic compound Pt₃Sn nanoparticles. The Pt₃Sn/SnS₂ heterostructures show promise for selective NO₂ sensing due to the favored gas adsorption and gas–solid charge transfer on Pt₃Sn, combined with the optimized film conductance and formation of ohmic-type Pt₃Sn/SnS₂ heterointerfaces. ...
DOI:
10.1039/d1cc00015b

95. Hold on Tight: MOF-Based Irreversible Gas Sensors

Author:
Leo J. Small; Mara E. Schindelholz; Tina M. Nenoff
Source:
Industrial & engineering chemistry process design and development 2021 v.60 no.21 pp. 7998-8006
ISSN:
1520-5045
Subject:
chemical bonding; chemical species; coordination polymers; electrical properties; energy costs; engineers; gases; process design; processing chemistry
Abstract:
... Metal–organic frameworks (MOFs) are poised to improve modern-day gas sensors. Their unparalleled tunability and chemical selectivity across a wide span of chemical species have made them attractive for use in highly selective gas sensors. In this work, we delve into one of the biggest strengths of many MOFs, their irreversible chemisorption of gas molecules, and how this can be leveraged to create ...
DOI:
10.1021/acs.iecr.1c01266

96. Impact of atomization gas on characteristics of austenitic stainless steel powder feedstocks for additive manufacturing

Author:
M.Z. Gao; B. Ludwig; T.A. Palmer
Source:
Powder technology 2021 v.383 pp. 30-42
ISSN:
0032-5910
Subject:
atomization; density; drums (equipment); feedstocks; flow; gases; manufacturing; mass; nitrogen; particle size; particle size distribution; permeability; porosity; powders; rheological properties; spatial distribution; specific energy; stainless steel; torque; uncertainty
Abstract:
... Given the complexity of the laser-material interactions prevalent in powder bed fusion additive manufacturing, the need for tight control of alloy composition in the metal powder feedstock is leading to the use of specific gases during atomization. These changes in atomization gas also impact powder flow and packing. In order to identify the magnitude of this impact, two nitrogen atomized and one ...
DOI:
10.1016/j.powtec.2020.12.005

97. Improved C3H6/C3H8 separation performance on ZIF-8 membranes through enhancing PDMS contact-dependent confinement effect

Author:
Jingxian Hua; Chang Li; Hongxu Tao; Lei Wang; Eryue Song; Haiqian Lian; Chongqing Wang; Jinlong Jiang; Yichang Pan; Weihong Xing
Source:
Journal of membrane science 2021 v.636 pp. 119613
ISSN:
0376-7388
Subject:
asymmetric membranes; coatings; feeds; gases; journals; methodology; polymers
Abstract:
... Polymer coating post-treatment strategy of the zeolitic imidazolate framework (ZIF) membranes offers a versatile and feasible opportunity to restrict the intrinsic flexibility of ZIF framework and improve their gas separation performance. Herein, two different coating methods (Vacuum-assisted drip coating (VADC) and Static drip coating (SDC)) are utilized to prepare PDMS/ZIF-8 composite membranes ...
DOI:
10.1016/j.memsci.2021.119613

98. In-situ generation of polymer molecular sieves in polymer membranes for highly selective gas separation

Author:
Menghui Huang; Zhenggong Wang; Kuan Lu; Wangxi Fang; Xiangyu Bi; Yatao Zhang; Jian Jin
Source:
Journal of membrane science 2021 v.630 pp. 119302
ISSN:
0376-7388
Subject:
gases; heat treatment; journals; mixing; polymers; sieves; sieving; thermal stability
Abstract:
... Molecular sieve materials (MSMs) are regarded as ideal fillers for the fabrication of mixed matrix membranes (MMMs). However, the preparation of MSMs-based MMMs usually involves physical mixing of insoluble filler and polymer matrix, which inevitably leads to filler agglomeration and two-phase incompatibility especially for high filler loading. Herein, we report a new strategy to construct MMMs th ...
DOI:
10.1016/j.memsci.2021.119302

99. Influence of SiO2 on the gas-based direct reduction behavior of Hongge vanadium titanomagnetite pellet by hydrogen-rich gases

Author:
Ruiqi Zeng; Nan Wang; Wei Li
Source:
Powder technology 2021 v.386 pp. 90-97
ISSN:
0032-5910
Subject:
furnaces; gases; grains; iron; pelleting; pellets; powders; slags; vanadium
Abstract:
... In this study, the influence and mechanism of SiO₂ on the gas-based direct reduction behavior of Hongge vanadium titanomagnetite pellet (HVTMP) by hydrogen-rich gases was investigated. Increasing SiO₂ during the initial stage caused the reduction degree of HVTMP to initially increase and then decrease. At the later stage, SiO₂ retarded the reduction, and this effect increased upon increasing the S ...
DOI:
10.1016/j.powtec.2021.03.019

100. Influence of burden profile on gas-solid distribution in COREX shaft furnace with center gas supply by CFD-DEM model

Author:
Heng Zhou; Kun Xu; Xu Tian; Mingyin Kou; Shengli Wu; Yansong Shen
Source:
Powder technology 2021 v.392 pp. 672-679
ISSN:
0032-5910
Subject:
clothing; exhibitions; furnaces; gases; models; particles; porosity; powders; solids
Abstract:
... This paper presents a numerical study of the influence of burden profile on gas-solid distribution in a COREX shaft furnace through CFD-DEM model. The model takes into account the transient features of gas and particle flow under evaluation of five burden profiles, and the results show that the burden profile has a minor effect on the burden descending velocity. Caused by the segregation, the over ...
DOI:
10.1016/j.powtec.2021.07.039