PubAg

Main content area

You searched for: Publication Year 2019 Remove constraint Publication Year: 2019 Subject polymers Remove constraint Subject: polymers
Start Over

Search

4,222  Search Results

« Previous | 1 - 20 of 4,222 |
Number of results to display per page

Search Results

1. The performance of gravity-driven membrane (GDM) filtration for roofing rainwater reuse: Implications of roofing rainwater energy and rainwater purification

Author:
Du, Xing; Xu, Jiongji; Mo, Zhuoyu; Luo, Yunlong; Su, Junhao; Nie, Jinxu; Wang, Zhihong; Liu, Lifan; Liang, Heng
Source:
The Science of the total environment 2019 v.697
ISSN:
0048-9697
Subject:
adenosine triphosphate; aluminum; ammonium nitrogen; bacteria; biofilm; calcium; chromium; confocal laser scanning microscopy; copper; energy; energy-dispersive X-ray analysis; filtration; image analysis; iron; manganese; microbial activity; microbial communities; organic carbon; polymers; public water supply; rain; scanning electron microscopy; spectroscopy; stormwater management; water harvesting
Abstract:
... Rainwater harvesting (RWH) coupled with gravity-driven membrane (GDM) filtration was used to simultaneously treat rainwater and recover energy. A pilot GDM could obtain a relatively stable level of permeate flux (~4.0 L/(m2·h)) under a set water head (ΔH = 0.4 m) over 140 days of operation. An increase water head (ΔH = 0.6 m) did not achieve a sharp increase in stabilized flux (~2.4 L/(m2·h)) over ...
DOI:
10.1016/j.scitotenv.2019.134187

2. Applications and challenges of elemental sulfur, nanosulfur, polymeric sulfur, sulfur composites, and plasmonic nanostructures

Author:
Teng, Yong; Zhou, Qixing; Gao, Peng
Source:
Critical reviews in environmental science and technology 2019 v.49 no.24 pp. 2314-2358
ISSN:
1547-6537
Subject:
health effects assessments; nanomaterials; physics; polymers; risk; risk reduction; sulfur
Abstract:
... As an abundant and biologically active element, sulfur has been applied in various fields. Through the nanotechnology method, nanosulfur is synthesized with the merits of size effects. Differentiated properties, structures, and functions of sulfur could lead to different applications. In particular, various sulfur composites are synthesized and showed satisfied performance in environmental fields. ...
DOI:
10.1080/10643389.2019.1609856

3. Classification of plastic waste originated from waste electric and electronic equipment based on the concentration of antimony

Author:
Alassali, Ayah; Abis, Marco; Fiore, Silvia; Kuchta, Kerstin
Source:
Journal of hazardous materials 2019 v.380 pp. 120874
ISSN:
0304-3894
Subject:
antimony; aqua regia; computers; electronic wastes; lamps; landfills; leaching; microwave ovens; mobile telephones; near-infrared spectroscopy; polymers; wet digestion method
Abstract:
... The aim of this research is a preliminary assessment of antimony concentration in plastic fractions deriving from different e-waste. We considered microwave ovens, desktop computers, laptops, mobile phones, a TV case, a PC monitor and LED lamps (63 items in total). The plastic fraction ranged from 8%-wt in computers and microwave ovens, up to 40%-wt in cell phones and 59%-wt in LED lamps. Specific ...
DOI:
10.1016/j.jhazmat.2019.120874

4. CsPbBrCl2/g-C3N4 type II heterojunction as efficient visible range photocatalyst

Author:
Paul, Tufan; Das, Dimitra; Das, Bikram Kumar; Sarkar, Saikat; Maiti, Soumen; Chattopadhyay, Kalyan Kumar
Source:
Journal of hazardous materials 2019 v.380 pp. 120855
ISSN:
0304-3894
Subject:
EDTA (chelating agent); carbon nitride; cesium; density functional theory; dyes; effluents; free radicals; gap junctions; graphene; lead; light; lighting; photocatalysis; photocatalysts; polymers; semiconductors; toxicity
Abstract:
... Photocatalytic activity of low band gap semiconductor largely restrained by high recombination rate of photogenerated charge carriers. To enhance the catalytic performance numerous protocols were adopted amongst which designing of novel hybrid via coupling of semiconductors are very intriguing from modest application point of view. Here, we report facile realization of type II heterojunctions embr ...
DOI:
10.1016/j.jhazmat.2019.120855

5. Efficient nitrogen removal in separate coupled-system of anammox and sulfur autotrophic denitrification with a nitrification side-branch under substrate fluctuation

Author:
Wang, Tuo; Guo, Jianbo; Song, Yuanyuan; Lian, Jing; Li, Haibo; Lu, Caicai; Han, Yi; Hou, Yanan
Source:
The Science of the total environment 2019 v.696
ISSN:
0048-9697
Subject:
ammonium; anaerobic ammonium oxidation; bacteria; bacterial communities; biofilm; denitrification; nitrites; nitrogen; polymers; starvation; sulfur; total nitrogen; wastewater treatment
Abstract:
... In order to achieve efficient nitrogen removal, a separate coupled-system of anaerobic ammonia oxidation (anammox) and sulfur autotrophic denitrification (S0-SADN) was established. In this study, the operational feasibility and stability of the coupled-system under substrate fluctuations were investigated. Results showed that the coupled-system improved the total nitrogen removal efficiency (TNRE) ...
DOI:
10.1016/j.scitotenv.2019.133929

6. Highly efficient and selective recovery of Au(III) by a new metal-organic polymer

Author:
Xu, Weifeng; Mo, Xiaohui; Zhou, Shuxian; Zhang, Panliang; Xiong, Biquan; Liu, Yu; Huang, Yan; Li, Hua; Tang, Kewen
Source:
Journal of hazardous materials 2019 v.380 pp. 120844
ISSN:
0304-3894
Subject:
adsorbents; adsorption; aqueous solutions; cadmium; copper; desorption; electronic wastes; gold; ions; nickel; polymers; thiourea; zinc
Abstract:
... A metal-organic polymer with high water stability was successfully developed to efficiently recover Au(III) from aqueous solutions. This material shows excellent performance for the adsorption of Au(III). Nearly 100% of Au(III) could be removed with fast adsorption rate at low concentration solutions, and the maximum adsorption capacity of 1317 mg/g could be achieved. Significantly, the material s ...
DOI:
10.1016/j.jhazmat.2019.120844

7. Undesirable effects of exogenous N-acyl homoserine lactones on moving bed biofilm reactor treating medium-strength synthetic wastewater

Author:
Fan, Xuan; Peng, Pengcheng; Huang, Hui; Peng, Chong; Gao, Yilin; Ren, Hongqiang
Source:
The Science of the total environment 2019 v.696
ISSN:
0048-9697
Subject:
Chryseobacterium; adenosine triphosphate; ammonium nitrogen; biofilm; homoserine; lactones; microbial communities; moving bed biofilm reactors; nutrition; pollutants; pollution control; polymers; secretion; wastewater; wastewater treatment
Abstract:
... Exogenous AHLs are gradually reported to facilitate biofilm growth, however, whether they play a universal role in promoting biofilm formation and pollutants removal remains to be investigated. The pollutant removal, biofilm properties, microbial community and the distribution of AHLs were investigated in three lab-scale MBBRs by continuous dosing 100 nM N-Hexanoyl-L-homoserine lactone (C6-HSL) an ...
DOI:
10.1016/j.scitotenv.2019.134061

8. Visible-light-driven photocatalytic degradation of sulfamethazine by surface engineering of carbon nitride：Properties, degradation pathway and mechanisms

Author:
Zhou, Chengyun; Zeng, Zhuotong; Zeng, Guangming; Huang, Danlian; Xiao, Rong; Cheng, Min; Zhang, Chen; Xiong, Weiping; Lai, Cui; Yang, Yang; Wang, Wenjun; Yi, Huan; Li, Bisheng
Source:
Journal of hazardous materials 2019 v.380 pp. 120815
ISSN:
0304-3894
Subject:
adsorption; carbon; carbon nitride; copolymerization; cysteine; dicyandiamide; electrons; energy; high performance liquid chromatography; light; lighting; nitrogen; oxygen; photocatalysis; photocatalysts; photolysis; pollutants; polymers; semiconductors; spectrometers; sulfamethazine; superoxide anion
Abstract:
... Polymeric carbon nitride semiconductor has been explored as emerging metal-free photocatalyst for solving the energy shortage and environmental issues. However, the efficiency of carbon nitride is still not satisfying. Herein, a facile copolymerization between L-cysteine and dicyandiamide has been applied to forming the modified carbon nitride photocatalysts. The photocatalytic performance was eva ...
DOI:
10.1016/j.jhazmat.2019.120815

9. A novel composite of layered double hydroxide/geopolymer for co-immobilization of Cs+ and SeO42− from aqueous solution

Author:
Tian, Quanzhi; Sasaki, Keiko
Source:
The Science of the total environment 2019 v.695 pp. 133799
ISSN:
0048-9697
Subject:
anions; aqueous solutions; blood platelets; cations; cesium; ion exchange; nitrates; polymers; radioactive waste; sorption
Abstract:
... Geopolymers are always considered as promising materials for the treatment of radioactive wastes. In order to extend the application of geopolymer to the immobilization of anionic species, a novel composite of layered double hydroxide/geopolymer (LDH/GEO) was synthesized and applied for cosorption of Cs+ and SeO42−. The ability of LDH/GEO to sorb Cs+ was maintained as that of pure GEO, even though ...
DOI:
10.1016/j.scitotenv.2019.133799

10. Flow-induced crystallization of biochar in bio-asphalt under various aging conditions

Author:
Zhou, Xinxing; Adhikari, Sanjeev
Source:
The Science of the total environment 2019 v.695 pp. 133943
ISSN:
0048-9697
Subject:
biochar; crystallization; crystals; deformation; polymers; rheological properties; rheometers; small-angle X-ray scattering
Abstract:
... Flow-induced crystallization (FIC) in polymers is an important problem that occurs on a very rapid time scale. This study aims to evaluate the flow-induced crystallization of bio-asphalt modified with different contents of biochar under various aging conditions. Small angle X-ray scattering and molecular dynamic simulations were performed to impose extensional deformation and the nucleation proces ...
DOI:
10.1016/j.scitotenv.2019.133943

11. In-situ sludge settleability improvement and carbon reuse in SBR process coupled with hydrocyclone

Author:
Xu, Jiaping; Sun, Yuxiao; Liu, Yi; Yuan, Wei; Dai, Li; Xu, Weinan; Wang, Hualin
Source:
The Science of the total environment 2019 v.695 pp. 133825
ISSN:
0048-9697
Subject:
activated sludge; ammonium nitrogen; batch systems; biological treatment; bioreactors; chemical oxygen demand; denitrification; organic carbon; particle size; polymers; polysaccharides; proteins; total nitrogen; total suspended solids; wastewater treatment; water quality; China
Abstract:
... The settleability performance of activated sludge (AS) is a very important indicator in the biological treatment of wastewater. In this paper, we investigated the influence of hydrocyclone treatment on sludge settleability and explored the influence mechanism by sorting the excess sludge (ES) with a hydrocyclone. A lateral-line test of the treatment process of the campus wastewater treatment plant ...
DOI:
10.1016/j.scitotenv.2019.133825

12. Magnetic separation of phosphate contaminants from starch wastewater using magnetic seeding

Author:
Du, Chunjie; Hu, Yuehua; Han, Haisheng; Sun, Wei; Hou, Panpan; Liu, Runqing; Wang, Li; Yang, Yue; Liu, Ruohua; Sun, Lei; Yue, Tong
Source:
The Science of the total environment 2019 v.695 pp. 133723
ISSN:
0048-9697
Subject:
chemical precipitation; ferric sulfate; flocculation; hydroxyapatite; magnetic materials; magnetic separation; magnetism; pH; polymers; roasting; sowing; starch; turbidity; van der Waals forces; wastewater; zeta potential
Abstract:
... Traditional chemical precipitation of phosphates from wastewater is somewhat inefficient because it produces some ultrafine hydroxyapatite particles that are difficult to settle. In this study, magnetic seeds with a core–shell structure were prepared by sulfation roasting for magnetic flocculation of those fine particles. Zeta potential measurements show that the hydroxyapatite particles are posit ...
DOI:
10.1016/j.scitotenv.2019.133723

13. Adsorption of extracellular polymeric substances from two microbes by TiO2 nanoparticles

Author:
Gao, Xuan; Middepogu, Ayyaraju; Deng, Rui; Liu, Jingfu; Hao, Zhineng; Lin, Daohui
Source:
The Science of the total environment 2019 v.694 pp. 133778
ISSN:
0048-9697
Subject:
Chlorella pyrenoidosa; Escherichia coli; adsorption; mass spectrometry; microorganisms; moieties; molecular weight; nanoparticles; polymers; polysaccharides; surface area; thermodynamics; titanium dioxide; toxicity
Abstract:
... Extracellular polymeric substance (EPS) secreted by microbes can interact with nanoparticles (NPs) and thus influence environmental behavior and toxicity of NPs. The adsorption of EPSs from two species of microbes (Escherichia coli and Chlorella pyrenoidosa) by four types of titanium dioxide nanoparticles (nTiO2) (5, 10, and 40 nm anatase nTiO2 and 25 nm rutile nTiO2) were therefore specifically i ...
DOI:
10.1016/j.scitotenv.2019.133778

14. Adsorption of perfluoroalkyl and polyfluoroalkyl substances (PFASs) from aqueous solution - A review

Author:
Zhang, D.Q.; Zhang, W.L.; Liang, Y.N.
Source:
The Science of the total environment 2019 v.694 pp. 133606
ISSN:
0048-9697
Subject:
activated carbon; adsorbents; adsorption; aqueous solutions; biosorbents; carbon nanotubes; electrostatic interactions; hydrogen bonding; hydrophobic bonding; ion exchange; ion exchange resins; minerals; molecular imprinting; perfluorocarbons; polymers; toxicity; wastewater
Abstract:
... Perfluoroalkyl and polyfluoroalkyl substances (PFASs) have gained increasingly global attention in recent years. Due to their unique amphiphilic properties and stability, PFASs are recognized as highly persistent, toxic, and environmentally bioaccumulative. Among several physicochemical technologies, adsorption has been extensively used and proved to be an effective method for removing PFASs from ...
DOI:
10.1016/j.scitotenv.2019.133606

15. Analysis of polyhexamethylene biguanide and alexidine in contact lens solutions using capillary electrophoresis, ultra-performance liquid chromatography and quadrupole time of flight mass spectrometry

Author:
Thompson, Brandon L.; Samant, Vikram N.; Wei, Xing; David, Frederic D.C.; Edmunds, Carter E.; Wheeler, Jonathan M.; Phillips, K. Scott; Wheeler, John F.; Wheeler, Sandra K.
Source:
Talanta 2019 v.205 pp. 120056
ISSN:
0039-9140
Subject:
Food and Drug Administration; anti-infective agents; antimicrobial properties; biguanides; capillary electrophoresis; health services; light scattering; manufacturing; mass spectrometry; polymers; quality control; quantitative analysis; quaternary ammonium compounds; solid phase extraction; ultra-performance liquid chromatography
Abstract:
... Polymeric biguanides, as well as quaternary ammonium compounds, are ubiquitous antimicrobial agents in healthcare. Due to the highly cationic and polymeric nature of these compounds and the complex matrices in which they are found, the analytical characterization of products containing them remains challenging. In this work an efficient, sensitive, and high-resolution separation protocol was devel ...
DOI:
10.1016/j.talanta.2019.06.056

16. Application of new covalently-bound diglycolamide sorbent in sequential injection analysis flow system for sample pretreatment in ICP-MS determination of 239Pu at ppt level

Author:
Kołacińska, Kamila; DeVol, Timothy A.; Seliman, Ayman F.; Bliznyuk, Valery N.; Dudek, Jakub; Dudek, Marta K.; Piotrowski, Piotr; Trojanowicz, Marek
Source:
Talanta 2019 v.205 pp. 120099
ISSN:
0039-9140
Subject:
detection limit; fuels; hydrophobicity; ligands; liquid-liquid extraction; mass spectrometry; mechanization; plutonium; polymers; radionuclides; rare earth elements; solid phase extraction; sorbents
Abstract:
... Diglycolamide ligands are widely applied in the analysis of radionuclides, especially lanthanides and actinides. They are used in liquid-liquid extraction procedures or in solid-phase extraction sorbents where they are adsorbed on the surface of hydrophobic polymers.The main objective of this study was to synthesize the N,N,N'N′-tetrahexyl diglycolamide with one vinyl terminating group (vTHDGA) fo ...
DOI:
10.1016/j.talanta.2019.06.099

17. Chemical consequences of extended maceration and post-fermentation additions of grape pomace in Pinot noir and Zinfandel wines from the Central Coast of California (USA)

Author:
Casassa, L. Federico; Huff, Robert; Steele, Nicholas B.
Source:
Food chemistry 2019 v.300 pp. 125147
ISSN:
0308-8146
Subject:
anthocyanins; coasts; desorption; grape pomace; maceration; polymers; tannins; winemaking; wines; California
Abstract:
... Pinot noir and Zinfandel wines were produced with traditional maceration (Control), and extended maceration for one (1 month-EM), and six months (6 months-EM). Addition of an extra amount of pomace during EM was also evaluated through a treatment referred to as Double pomace. The application of EM and Double pomace decreased the chromatic as well as the anthocyanin and anthocyanin-derived pigment ...
DOI:
10.1016/j.foodchem.2019.125147

18. Clickable cellulosic surfaces for peptide-based bioassays

Author:
Odinolfi, Maria Teresa; Romanato, Alessandro; Bergamaschi, Greta; Strada, Alessandro; Sola, Laura; Girella, Alessandro; Milanese, Chiara; Chiari, Marcella; Gori, Alessandro; Cretich, Marina
Source:
Talanta 2019 v.205 pp. 120152
ISSN:
0039-9140
Subject:
adsorption; antifouling activities; bioassays; cellulose; chemoselectivity; coatings; immunoassays; paper; peptides; polymers
Abstract:
... The use of peptides in paper-based analytics is a highly appealing field, yet it suffers from severe limitations. This is mostly due to the loss of effective target recognition properties of this relatively small probes upon nonspecific adsorption onto cellulose substrates. Here we address this issue by introducing a simple polymer-based strategy to obtain clickable cellulose surfaces, that we exp ...
DOI:
10.1016/j.talanta.2019.120152

19. Comparison of coagulative colloidal microbubbles with monomeric and polymeric inorganic coagulants for tertiary treatment of distillery wastewater

Author:
Zhang, Ming; Cai, Zhongxia; Xie, Li; Zhang, Yin; Tang, Linfeng; Zhou, Qi; Qiang, Zhimin; Zhang, Hua; Zhang, Daoyong; Pan, Xiangliang
Source:
The Science of the total environment 2019 v.694 pp. 133649
ISSN:
0048-9697
Subject:
air; aluminum; aluminum chloride; cassava; cationic surfactants; cetyltrimethylammonium bromide; coagulants; dissolved organic matter; distillery effluents; dyes; ferric sulfate; iron; microbubbles; molecular weight; polymers; sludge; surface tension
Abstract:
... The flotation using coagulative colloidal gas aphrons (CCGAs) is of great potential in effectively removing the recalcitrant dissolved organic matter (DOM) and colorants from the bio-chemically treated cassava distillery wastewater. As bubble modifier, the monomeric and polymeric inorganic coagulants need to be studied considering their distinct influence on the surfactant/coagulant complex, the p ...
DOI:
10.1016/j.scitotenv.2019.133649

20. Development of pipette tip-based poly(methacrylic acid-co-ethylene glycol dimethacrylate) monolith for the extraction of drugs of abuse from oral fluid samples

Author:
Sorribes-Soriano, A.; Valencia, A.; Esteve-Turrillas, F.A.; Armenta, S.; Herrero-Martínez, J.M.
Source:
Talanta 2019 v.205 pp. 120158
ISSN:
0039-9140
Subject:
binding capacity; cocaine; detection limit; diazepam; high performance liquid chromatography; methamphetamines; models; polymerization; polymers; psychotropic agents; solvents; standard deviation; tandem mass spectrometry; toluene; ultra-performance liquid chromatography
Abstract:
... In this work, a monolithic polymer based on poly(methacrylic acid-co-ethylene glycol dimethacrylate) (MAA-co-EDMA) was prepared inside 200 μL pipette tips for the extraction of drug of abuse from oral fluid samples. After an appropriate surface tip modification, several polymerization mixtures with different monomer/cross-linker ratios, and percentage of porogen were studied. The most appropriate ...
DOI:
10.1016/j.talanta.2019.120158