PubAg

Main content area

You searched for: Subject "water treatment" Remove constraint Subject: "water treatment"
Start Over

Search

9,487  Search Results

« Previous | 1 - 20 of 9,487 |
Number of results to display per page

Search Results

1. Effect of solvent pre-treatment on the structures and dissolution of microcrystalline cellulose in lithium chloride/dimethylacetamide

Author:
Wang, Weiku; Li, Yinhui; Li, Weijie; Zhang, Baohua; Liu, Yaodong
Source:
Cellulose 2019 v.26 no.5 pp. 3095-3109
ISSN:
0969-0239
Subject:
water treatment,   etc   ; anions; cellulose; lithium chloride; solvents;     Show all 5 Subjects
Abstract:
... This study systematically investigated the structural changes of cotton-based microcrystalline cellulose (MCC) during solvent treatment in water and dimethylacetamide (DMAc), as well as how solvent exchange affects the dissolution rates of MCC in LiCl/DMAc solution. When MCC is soaked in DMAc or water for 3 days or longer, the surface cellulose layers become exfoliated from the MCC particles and t ...
DOI:
10.1007/s10570-019-02300-8

2. Stimuli-responsive bio-based polymeric systems and their applications

Author:
Gao, Shuting; Tang, Guosheng; Hua, Dawei; Xiong, Ranhua; Han, Jingquan; Jiang, Shaohua; Zhang, Qilu; Huang, Chaobo
Source:
Journal of materials chemistry B 2019 v.7 no.5 pp. 709-729
ISSN:
2050-7518
Subject:
water treatment,   etc   ; chemistry; drugs; food packaging; polymers;     Show all 5 Subjects
Abstract:
... Stimuli-responsive bio-based polymeric systems are gaining considerable attention as intelligent versatile tools that show great potential in various fields. In this review, an overview is given of recent developments of stimuli-responsive bio-based polymeric systems. The characteristics of bio-based polymers in different applications are discussed and the superiority of these advanced stimuli-res ...
DOI:
10.1039/c8tb02491j

3. Optimal Operation of a Subsea Separation System Including a Coalescence Based Gravity Separator Model and a Produced Water Treatment Section

Author:
Das, Tamal; Heggheim, Sindre Johan; Dudek, Marcin; Verheyleweghen, Adriaen; Jäschke, Johannes
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.10 pp. 4168-4185
ISSN:
1520-5045
Subject:
water treatment,   etc   ; gravity; models; oils; process design;     Show all 5 Subjects
Abstract:
... In this work, we develop a model for a gravity separator, and we use it together with models from the literature to study the control of a subsea separation system that separates oil, gas, and water from well fluids in hydrocarbon production. Our separation system contains a gravity separator, hydrocyclones, and compact flotation units. The main contributions of the paper are 2-fold. First, we pre ...
DOI:
10.1021/acs.iecr.8b04923

4. TiO2@C core@shell nanocomposites: A single precursor synthesis of photocatalyst for efficient solar water treatment

Author:
Chauhan, Aditya; Sharma, Moolchand; Kumar, Sandeep; Thirumalai, Sundararajan; Kumar, Ramachandran Vasant; Vaish, Rahul
Source:
Journal of hazardous materials 2020 v.381 pp. 120883
ISSN:
0304-3894
Subject:
water treatment,   etc   ; absorption; carbon; drugs; dyes; light; mineralization; nanocomposites; nanomaterials; pathogens; photocatalysis; photocatalysts; pollutants; titanium dioxide; toxicity;     Show all 15 Subjects
Abstract:
... This study reports the facile synthesis of highly photoactive TiO2@C core@shell nanocomposites through a single alkoxide precursor. TiO2 and carbon-based hybrid nanomaterials are popular photocatalysts owing to their abundance, low toxicity, and high stability, making them strong candidates for practical solar water-treatment applications. However, synthesis of such nanomaterials is often a multi- ...
DOI:
10.1016/j.jhazmat.2019.120883

5. Effects of feed water NOM variation on chloramine demand from chloramine-decaying soluble microbial products during rechloramination

Author:
Herath, Bhagya S.; Torres, Allan; Sathasivan, Arumugam
Source:
Chemosphere 2018 v.212 pp. 744-754
ISSN:
0045-6535
Subject:
water treatment,   etc   ; heterotrophs; nitrites; oxidation;     Show all 4 Subjects
Abstract:
... Earlier, we reported on soluble microbial products-mediated chloramine decay in nitrifying waters. However, we neither separated the agent(s) nor identified the factors that enhanced the production of chloramine-decaying soluble microbial products (cSMPs). Experiments were conducted by feeding reactor sets (each consisting of five reactors connected in series) with treated water (3–8 mg-DOC.L−1) o ...
DOI:
10.1016/j.chemosphere.2018.07.160

6. Bromide and iodide selectivity in membrane capacitive deionisation, and its potential application to reduce the formation of disinfection by-products in water treatment

Author:
Dorji, Pema; Kim, David Inhyuk; Jiang, Jiaxi; Choi, Jongmoon; Phuntsho, Sherub; Hong, Seungkwan; Shon, Ho Kyong
Source:
Chemosphere 2019 v.234 pp. 536-544
ISSN:
0045-6535
Subject:
water treatment,   etc   ; adsorption; disinfection; electrochemistry; sodium chloride; toxicity;     Show all 6 Subjects
Abstract:
... The formation of toxic disinfection by-products during water disinfection due to the presence of bromide and iodide is a major concern. Current treatment technologies such as membrane, adsorption and electrochemical processes have been known to have limitations such as high energy demand and excessive chemical use. In this study, the selectivity between bromide and iodide, and their removal in mem ...
DOI:
10.1016/j.chemosphere.2019.05.266

7. Development and application of relevance and reliability criteria for water treatment removal efficiencies of chemicals of emerging concern

Author:
Fischer, Astrid; van Wezel, Annemarie P.; Hollender, Juliane; Cornelissen, Emile; Hofman, Roberta; van der Hoek, Jan Peter
Source:
Water research 2019 v.161 pp. 274-287
ISSN:
0043-1354
Subject:
water treatment,   etc   ; aquatic environment; decision making; drinking water; stakeholders; wastewater;     Show all 6 Subjects
Abstract:
... With the growth in production and use of chemicals and the fact that many end up in the aquatic environment, there is an increasing need for advanced water treatment technologies that can remove chemicals of emerging concern (CECs) from water. The current lack of a homogenous approach for testing advanced water treatment technologies hampers the interpretation and evaluation of CEC removal efficie ...
DOI:
10.1016/j.watres.2019.05.088

8. Non-catalytic conversion of chitin into Chromogen I in high-temperature water

Author:
Osada, Mitsumasa; Kobayashi, Hisaya; Miyazawa, Tatsuya; Suenaga, Shin; Ogata, Makoto
Source:
International journal of biological macromolecules 2019 v.136 pp. 994-999
ISSN:
0141-8130
Subject:
water treatment,   etc   ; chitin; ionic liquids; kinetics; temperature; water solubility;     Show all 6 Subjects
Abstract:
... The non-catalytic conversion of chitin into N-acetyl-ᴅ-glucosamine (GlcNAc) derivatives such as 2-acetamido-2,3-dideoxy-ᴅ-erythro-hex-2-enofuranose (Chromogen I) was investigated in high-temperature water at 290–390 °C and 25 MPa with a reaction time of 0–180 min. High-temperature water treatment is a promising method for chitin conversion as it does not require the use of any additional organic s ...
DOI:
10.1016/j.ijbiomac.2019.06.123

9. One step hydrothermal functionalization of gold nanoparticles with folic acid

Author:
Vostrikova, Anna M.; Kokorina, Alina A.; Mitrophanova, Anastassia N.; Sindeeva, Olga A.; Sapelkin, Andrei V.; Sukhorukov, Gleb B.; Goryacheva, Irina Y.
Source:
Colloids and surfaces 2019 v.181 pp. 533-538
ISSN:
0927-7765
Subject:
hot water treatment,   etc   ; antibodies; folic acid; ligands; moieties; nanogold;     Show all 6 Subjects
Abstract:
... A new fundamental concept for one-step in-situ functionalization of gold nanoparticles (GNPs) with folic acid using hydrothermal treatment is described. Hydrothermal treatment has been tuned to increase the light emission from the pterin moiety of folic acid molecule, while retain its structure and functionality, thus providing a simple route to multimodal tags for a variety of in vitro and in viv ...
DOI:
10.1016/j.colsurfb.2019.05.072

10. Optimized coagulation pretreatment alleviates ultrafiltration membrane fouling: The role of floc properties and slow-mixing speed on mechanisms of chitosan-assisted coagulation

Author:
Du, Peng; Li, Xing; Yang, Yanling; Su, Zhaoyang; Li, Hang; Wang, Nan; Guo, Tingting; Zhang, Tingting; Zhou, Zhiwei
Source:
Journal of environmental sciences (China) 2019 v.82 pp. 82-92
ISSN:
1001-0742
Subject:
water treatment,   etc   ; chitosan; coagulation; fouling; molecular weight; ultrafiltration;     Show all 6 Subjects
Abstract:
... To alleviate ultrafiltration (UF) membrane fouling, the pre-coagulation of poly-aluminum chloride (PACl) with the aid of chitosan (CTS) was conducted for synthetic humic acid–kaolin water treatment. Pre-coagulation of three molecular weights (MW) CTSs (50–190 kDa (CTSL), 190–310 kDa (CTSM) and 310–375 kDa (CTSH)) was optimized with slow-mixing speeds of 30, 60 and 90 r/min, respectively. The remov ...
DOI:
10.1016/j.jes.2019.02.027

11. Microplastics in drinking water treatment – Current knowledge and research needs

Author:
Novotna, Katerina; Cermakova, Lenka; Pivokonska, Lenka; Cajthaml, Tomas; Pivokonsky, Martin
Source:
The Science of the total environment 2019 v.667 pp. 730-740
ISSN:
0048-9697
Subject:
drinking water treatment,   etc   ; drinking water; freshwater; humans; microplastics; oceans; pollution;     Show all 7 Subjects
Abstract:
... Microplastics (MPs) have recently been detected in oceans, seas and freshwater bodies worldwide, yet few studies have revealed the occurrence of MPs in potable water. Although the potential toxicological effects of MPs are still largely unknown, their presence in water intended for human consumption deserves attention. Drinking water treatment plants (DWTPs) pose a barrier for MPs to enter drinkin ...
DOI:
10.1016/j.scitotenv.2019.02.431

12. Physico-Chemical Processes for the Treatment of Per- And Polyfluoroalkyl Substances (PFAS): A review

Author:
Nzeribe, Blossom Nwedo; Crimi, Michelle; Mededovic Thagard, Selma; Holsen, Thomas M.
Source:
Critical reviews in environmental science and technology 2019 v.49 no.10 pp. 866-915
ISSN:
1547-6537
Subject:
water treatment,   etc   ; electrochemistry; energy; organofluorine compounds; oxidation; photochemistry;     Show all 6 Subjects
Abstract:
... The recalcitrant behavior of per- and polyfluoroalkyl substances (PFAS) to most traditional water treatment processes is driving the development of new or modified treatment approaches for PFAS destruction. This paper evaluates and compares the strengths and limitations of available physico-chemical treatment techniques. A comparative assessment based on effectiveness (extent of degradation and de ...
DOI:
10.1080/10643389.2018.1542916

13. Scalable synthesis of an architectural library of well‐defined poly(acrylic acid) derivatives: Role of structure on dispersant performance

Author:
Lunn, David J.; Seo, Sungbaek; Lee, Sang‐Ho; Zerdan, Raghida Bou; Mattson, Kaila M.; Treat, Nicolas J.; McGrath, Alaina J.; Gutekunst, Will R.; Lawrence, Jimmy; Abdilla, Allison; Anastasaki, Athina; Knight, Abigail S.; Schmidt, Bernhard V. K. J.; Bates, Morgan W.; Clark, Paul G.; DeRocher, Jonathan P.; Van Dyk, Antony K.; Hawker, Craig J.
Source:
Journal of polymer science 2019 v.57 no.6 pp. 716-725
ISSN:
0887-624X
Subject:
water treatment,   etc   ; additives; dispersants; personal care products; polyacrylic acid;     Show all 5 Subjects
Abstract:
... The synthesis and systematic comparison of a comprehensive library of well‐defined polymer architectures based on poly(acrylic acid) is reported. Through the development of new synthetic methodologies, linear, single branched, precision‐branched comb, and star polymers were prepared and their performance as dispersants was evaluated. The ability to accurately control chain lengths and branch point ...
DOI:
10.1002/pola.29316

14. Recycling rainwater by submerged gravity-driven membrane (GDM) reactors: Effect of hydraulic retention time and periodic backwash

Author:
Wu, Bing; Soon, Genevieve Qian Yi; Chong, Tzyy Haur
Source:
The Science of the total environment 2019 v.654 pp. 10-18
ISSN:
0048-9697
Subject:
water treatment,   etc   ; cost effectiveness; filtration; fouling; rain; recycling; water supply;     Show all 7 Subjects
Abstract:
... Rainwater recycling has been considered as an alternative cost-effective decentralized water supply. The low cost and effective gravity-driven membrane (GDM) filtration technology has been introduced to treat the rainwater prior use. In this study, we investigated the effects of hydraulic retention time (HRT; 27 h, 51 h, and 156 h) and periodic backwash durations (2 min, 5 min, 10 min, and 30 min ...
DOI:
10.1016/j.scitotenv.2018.11.068

15. Nano-sized FeSe2 anchored on reduced graphene oxide as a promising anode material for lithium-ion and sodium-ion batteries

Author:
Kong, Fanjun; Lv, Linze; Gu, Ying; Tao, Shi; Jiang, Xuefan; Qian, Bin; Gao, Lei
Source:
Journal of materials science 2019 v.54 no.5 pp. 4225-4235
ISSN:
0022-2461
Subject:
hot water treatment,   etc   ; anodes; batteries; diffusivity; electrochemistry; graphene oxide; nanoparticles;     Show all 7 Subjects
Abstract:
... High-performance transition metal selenides are considered as promising electrode materials in alkali-ion batteries. However, the poor conductivity limits their further application. Herein, FeSe₂ nanoparticles anchored on reduced graphene oxide (FeSe₂@rGO) hybrid composites are prepared by a simple hydrothermal method and designed as promising anodes for lithium/sodium-ion batteries. The as-prepar ...
DOI:
10.1007/s10853-018-3143-1

16. PVP incorporated MoS₂ as a Mg ion host with enhanced capacity and durability

Author:
Wu, Canlong; Zhao, Guangyu; Gong, Shan; Zhang, Naiqing; Sun, Kening
Source:
Journal of materials chemistry A 2019 v.7 no.9 pp. 4426-4430
ISSN:
2050-7496
Subject:
hot water treatment,   etc   ; chemistry; durability; magnesium; molybdenum disulfide; nanospheres;     Show all 6 Subjects
Abstract:
... MoS₂ with enlarged interlayer spacing exhibits high Mg-ion storage capacity due to the accelerated kinetics of Mg²⁺, however, continuous decay of capacity occurs during the charge/discharge process, and the exfoliation of MoS₂ monolayers is observed because of the weakened van der Waal's interaction in MoS₂ interlayers. In the present study, PVP–MoS₂ nanospheres with an interlayer spacing of 0.97 ...
DOI:
10.1039/c8ta12288a

17. Extrinsic Two-Dimensional Flux Pinning Centers in MgB₂ Superconductors Induced by Graphene-Coated Boron

Author:
Li, Wenxian; Kang, Jixiang; Liu, Yang; Zhu, Mingyuan; Li, Ying; Qu, Jiangtao; Zheng, Rongkun; Xu, Jianyi; Liu, Bin
Source:
ACS applied materials & interfaces 2019 v.11 no.11 pp. 10818-10828
ISSN:
1944-8252
Subject:
hot water treatment,   etc   ; boron; encapsulation; graphene; graphene oxide; powders; superconductivity;     Show all 7 Subjects
Abstract:
... Extrinsic two-dimensional flux pinning centers, via graphene-encapsulated boron powder as precursors, have been introduced into MgB₂ superconductors by means of in situ and diffusion sintering methods. Uniform graphene encapsulation of the boron powders was achieved by the hydrothermal method with highly dispersed graphene oxide as the precursor. The graphene coating layers induce remaining graphe ...
DOI:
10.1021/acsami.8b19645

18. A visible-light-driven Z-scheme CdS/Bi12GeO20 heterostructure with enhanced photocatalytic degradation of various organics and the reduction of aqueous Cr(VI)

Author:
Ruan, Xiaowen; Hu, Hao; Che, Huinan; Jiang, Enhui; Zhang, Xiaoxu; Liu, Chunbo; Che, Guangbo
Source:
Journal of colloid and interface science 2019
ISSN:
0021-9797
Subject:
hot water treatment,   etc   ; chromium; ciprofloxacin; levofloxacin; photocatalysis; pollutants; tetracycline; wastewater;     Show all 8 Subjects
Abstract:
... A series of Z-scheme CdS/Bi12GeO20 heterostructures were successfully obtained by a simple hydrothermal method. The Z-scheme CdS/Bi12GeO20 heterostructures show outstanding photocatalytic performance for degrading the various organic pollutants of the waste water, and for the reduction of aqueous Cr(VI) under visible light. For degradation of 2-Mercaptobenzothiazole (MBT), the Z-scheme 30CdS/Bi12G ...
DOI:
10.1016/j.jcis.2019.02.052

19. Characterization of polybrominated diphenyl ethers (PBDEs) in various aqueous samples in Taiwan

Author:
Trinh, Minh Man; Tsai, Ching Lan; Chang, Moo Been
Source:
The Science of the total environment 2019 v.649 pp. 388-395
ISSN:
0048-9697
Subject:
water treatment,   etc   ; groundwater; polybrominated diphenyl ethers; surface water; Taiwan;     Show all 5 Subjects
Abstract:
... In this study, 20 groundwater samples and 7 surface water samples were collected and analyzed by HRGC-HRMS to evaluate the levels, congener distributions, and dissolved/solid partitioning of polybrominated diphenyl ethers (PBDEs) in water matrix as well as the removal efficiency of a typical water treatment plant (WTP). The results indicated that the level of PBDEs concentrations ranging from 18.5 ...
DOI:
10.1016/j.scitotenv.2018.08.204

20. Bottom-up synthesis and structural design strategy for graphene quantum dots with tunable emission to the near infrared region

Author:
Huang, Dapeng; Zhou, Haifeng; Wu, Yaqiang; Wang, Tao; Sun, Leilei; Gao, Peng; Sun, Yuzhen; Huang, Huining; Zhou, Guangjun; Hu, Jifan
Source:
Carbon 2019 v.142 pp. 673-684
ISSN:
0008-6223
Subject:
hot water treatment,   etc   ; benzene; fluorescence; graphene; quantum dots; wavelengths;     Show all 6 Subjects
Abstract:
... Despite recent advances in the fabrication of graphene quantum dots (GQDs) with excellent fluorescence performance, it has been challenging to extend the fluorescence emission to deep red and short wave near-infrared. Herein, we present a strategy to reach the goal via hydrothermal treatment of polythiophene derivatives which mainly comprises a polythiophene conjugate skeleton, lots of benzene rin ...
DOI:
10.1016/j.carbon.2018.10.047