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: Journal name Water research Remove constraint Journal name: Water research Publication year rev 7981-2019 Remove constraint Publication year rev: 7981-2019
Start Over

Search

994  Search Results

« Previous | 1 - 20 of 994 |
Number of results to display per page

Search Results

1. Accelerated microbial reductive dechlorination of 2,4,6-trichlorophenol by weak electrical stimulation

Author:
Xiao-Qiu Lin; Zhi-Ling Li; Bin Liang; Hong-Liang Zhai; Wei-Wei Cai; Jun Nan; Ai-Jie Wang
Source:
Water research 2019 v.162 pp. 236-245
ISSN:
0043-1354
Subject:
2,4,6-trichlorophenol; Acetobacterium; Desulfovibrio; biocathodes; bioelectrochemistry; biofilm; bioremediation; chemical reduction; dechlorination; electrical treatment; fermentation; fermenters; hydrogen; lactic acid; metabolites; methane; methane production; methanogens; phenol; plankton; pollutants; toxicity; voltammetry
Abstract:
... Microbial reductive dechlorination of chlorinated aromatics frequently suffers from the long dechlorination period and the generation of toxic metabolites. Biocathode bioelectrochemical systems were verified to be effective in the degradation of various refractory pollutants. However, the electrochemical and microbial related working mechanisms for bio-dechlorination by electro-stimulation remain ...
DOI:
10.1016/j.watres.2019.06.068

2. Achieving arsenic concentrations of <1 μg/L by Fe(0) electrolysis: The exceptional performance of magnetite

Author:
C.M. van Genuchten; T. Behrends; S.L.S. Stipp; K. Dideriksen
Source:
Water research 2019 pp. -
ISSN:
0043-1354
Subject:
World Health Organization; X-ray absorption spectroscopy; arsenic; electrocoagulation; electrolysis; magnetite; pH; research; sorption; water; water treatment; water utilities; Netherlands
Abstract:
... Consumption of drinking water containing arsenic at concentrations even below the World Health Organization provisional limit of 10 μg/L can still lead to unacceptable health risks. Consequently, the drinking water sector in the Netherlands has recently agreed to target 1 μg/L of arsenic in treated water. Unfortunately, in many poor, arsenic-affected countries, the costs and complexity of current ...
DOI:
10.1016/j.watres.2019.115170

3. Achieving efficient nitrogen removal from real sewage via nitrite pathway in a continuous nitrogen removal process by combining free nitrous acid sludge treatment and DO control

Author:
Cancan Jiang; Shengjun Xu; Rui Wang; Shugeng Feng; Sining Zhou; Shimin Wu; Xiangui Zeng; Shanghua Wu; Zhihui Bai; Guoqiang Zhuang; Xuliang Zhuang
Source:
Water research 2019 v.161 pp. 590-600
ISSN:
0043-1354
Subject:
activated sludge; carbon; denitrification; exposure duration; genes; greenhouse gas emissions; nitrates; nitric oxide; nitrification; nitrifying bacteria; nitrites; nitrogen; nitrogen cycle; nitrous acid; nitrous oxide production; sewage; wastewater treatment; China
Abstract:
... The incomplete denitrification due to insufficient carbon resource in the wastewater treatment plants (WWTPs) resulted in low nitrogen removal efficiency, which has become a widespread problem in China and all around the world. Reducing the requirement of carbon source by manipulating the nitrogen removal pathway from conventional nitrification-denitrification to partial nitrification-denitrificat ...
DOI:
10.1016/j.watres.2019.06.040

4. Achieving high nitrogen removal efficiency by optimizing nitrite-dependent anaerobic methane oxidation process with growth factors

Author:
Jiaqi Wang; Miaolian Hua; Yufen Li; Fang Ma; Ping Zheng; Baolan Hu
Source:
Water research 2019 v.161 pp. 35-42
ISSN:
0043-1354
Subject:
bacteria; bacterial communities; betaine; bioprocessing; denitrification; engineering; growth factors; heme; long term effects; magnetism; methane; nitrites; nitrogen; nucleobases; oxidation; total nitrogen; wastewater treatment
Abstract:
... Nitrite-dependent anaerobic methane oxidation (N-DAMO) is a newly discovered bioprocess which uses methane as electron donor to reduce nitrite into dinitrogen. It is a promising clean bioprocess for denitrification in wastewater treatment. However, the low reaction rate and slow growth rate of N-DAMO bacteria within NC10 phylum limit the application of the process. In this study, we chose vitamin, ...
DOI:
10.1016/j.watres.2019.05.101

5. Activation of oxygen with sulfite for enhanced Removal of Mn(II): The involvement of SO4•-

Author:
Dandan Rao; Yuankui Sun; Binbin Shao; Junlian Qiao; Xiaohong Guan
Source:
Water research 2019 v.157 pp. 435-444
ISSN:
0043-1354
Subject:
X-ray absorption spectroscopy; adsorption; calcium chloride; drinking water; iron; manganese; manganese dioxide; oxidants; oxidation; oxygen; pH; reactive oxygen species; sodium chloride; sulfites; China
Abstract:
... Taking advantage of the active oxidants generated in the process of Mn(II)-catalyzed sulfite oxidation by oxygen, this study sought to enhance Mn(II) removal from water by activating oxygen with sulfite. The results revealed that Mn(II) can be effectively oxidized by oxygen to MnO2 with the addition of sulfite under environmentally relevant conditions, and the performance of this process is depend ...
DOI:
10.1016/j.watres.2019.03.095

6. Adaptation of semi-continuous anaerobic sludge digestion to humic acids

Author:
Ji Li; Xiaodi Hao; Mark C.M. van Loosdrecht; Jinglun Yu; Ranbin Liu
Source:
Water research 2019 v.161 pp. 329-334
ISSN:
0043-1354
Subject:
anaerobic digestion; energy conversion; enzymes; humic acids; methane; methane production; methanogens; microbial communities; sludge
Abstract:
... Anaerobic digestion (AD) is a technology for recovering chemical energy as methane from excess sludge/waste. Unfortunately, humic acids (HA) contained in excess sludge can have the effects of inhibiting the efficiency of energy conversion. Based on a batch experiment, the impact of HA on a semi-continuous AD process was sequentially investigated, with the impact on the associated enzymes and micro ...
DOI:
10.1016/j.watres.2019.06.016

7. Aerobic and anaerobic formation and biodegradation of guanyl urea and other transformation products of metformin

Author:
Selina Tisler; Christian Zwiener
Source:
Water research 2019 v.149 pp. 130-135
ISSN:
0043-1354
Subject:
activated sludge; aerobic conditions; anaerobic conditions; biodegradability; biodegradation; metabolites; metformin; urea; wastewater treatment
Abstract:
... The aim of the study was to investigate the biodegradability of guanyl urea (GU) and the behavior of other transformation products (TPs) of Metformin (MF). Most biodegradation studies of MF with activated sludge of waste water treatment plants (WWTPs) showed GU as the only bacterial dead-end metabolite without further degradation. In this study, batch experiments with activated sludge revealed bio ...
DOI:
10.1016/j.watres.2018.11.001

8. Aerobic bacterial pretreatment to overcome algal growth inhibition on high-strength anaerobic digestates

Author:
Qichen Wang; Rishi Prasad; Brendan T. Higgins
Source:
Water research 2019 v.162 pp. 420-426
ISSN:
0043-1354
Subject:
Chlorella sorokiniana; activated sludge; algae; algae culture; ammonia; ammonium; anaerobic digestion; biomass; dose response; food waste; freshwater; heavy metals; nutrient uptake; nutrients; toxicity; turbidity; wastewater
Abstract:
... Coupling anaerobic digestion and algae cultivation has attracted attention as a sustainable means of treating high-strength wastewaters. In such a scenario, nutrients from the liquid anaerobic digestate are used by algae to produce biomass. However, use of full-strength digestate results in poor algal growth and nutrient removal. Most researchers have overcome this challenge by diluting digestate ...
DOI:
10.1016/j.watres.2019.07.011

9. Aggregating ability of ferric chloride in the presence of phosphate ligand

Author:
B. Lartiges; A.G. El Samrani; E. Montargès-Pelletier; I. Bihannic; V. Briois; L. Michot
Source:
Water research 2019 pp. -
ISSN:
0043-1354
Subject:
aluminum; anions; cations; coagulants; coagulation; electrophoresis; ferric chloride; geometry; ingredients; iron; ligands; nanoparticles; phosphates; polymers; silica; silicates; small-angle X-ray scattering
Abstract:
... Complexing anions such as phosphate or silicate play an ambivalent role in the performance of hydrolyzing metal coagulants: On one hand, they significantly interfere with the hydrolytic pathway of conventional iron or aluminum coagulants, the associated destabilization mechanism remaining rather elusive; on the other hand, they have been shown to be key ingredients in the formulation of innovative ...
DOI:
10.1016/j.watres.2019.114960

10. Aggregation Kinetics of Manganese Oxides Formed from permanganate activated by (Bi)sulfite: Dual Role of Ca2+ and MnII/III

Author:
Haijun Cheng; Jun Ma; Jin Jiang; Su-Yan Pang; Tao Yang; Panxin Wang
Source:
Water research 2019 v.159 pp. 454-463
ISSN:
0043-1354
Subject:
X-ray photoelectron spectroscopy; adsorption; bismuth; calcium; calcium nitrate; cations; coagulation; fulvic acids; light scattering; manganese oxides; nanoparticles; neutralization; oxidation; remediation; rivers; sodium nitrate; sulfites; water treatment; zeta potential
Abstract:
... Aqueous aggregation kinetics of manganese oxides, the solid products formed during water treatment and subsurface remediation with permanganate, are crucial for its application. In this study, manganese oxides nanoparticles were in situ formed in a permanganate/(bi)sulfite system, which was found to have excellent oxidation ability. Aggregation kinetics of such manganese oxides (i.e., MnOx-1.5, Mn ...
DOI:
10.1016/j.watres.2019.05.033

11. Airborne bacteria in a wastewater treatment plant: Emission characterization, source analysis and health risk assessment

Author:
Kaixiong Yang; Lin Li; Yanjie Wang; Song Xue; Yunping Han; Junxin Liu
Source:
Water research 2019 v.149 pp. 596-606
ISSN:
0043-1354
Subject:
Acinetobacter; Bacteroides; Chryseobacterium; Micrococcus; Pseudomonas; aeration; agitation; air; airborne microorganisms; average daily intake; breathing; control methods; health effects assessments; high-throughput nucleotide sequencing; risk; secondary infection; sludge; wastewater; wastewater treatment
Abstract:
... Wastewater treatment plants (WWTPs) are major sources of airborne bacteria, which could pose health risks to WWTP workers and surrounding residents. In this study, air samples were collected from various treatment facilities of a typical WWTP. Community compositions of airborne bacteria were identified by high-throughput sequencing technique. SourceTracker was used to determine the percentages of ...
DOI:
10.1016/j.watres.2018.11.027

12. Amorphous nickel phosphide as a noble metal-free cathode for electrochemical dechlorination

Author:
Qiufang Yao; Xuefei Zhou; Shaoze Xiao; Jiabin Chen; Islam A. Abdelhafeez; Zhenjiang Yu; Huaqiang Chu; Yalei Zhang
Source:
Water research 2019 v.165 pp. 114930
ISSN:
0043-1354
Subject:
catalysts; catalytic activity; cathodes; dechlorination; disinfection; electrical properties; electrolytes; electron transfer; foams; hydrogen production; hydrophilicity; models; nickel; palladium; phosphides; protons; trichloroacetic acid
Abstract:
... Nickel phosphide (Ni₂P) is an emerging efficient catalyst for the hydrogen evolution and water splitting. Herein, we report that Ni₂P is also a promising catalyst for enhancing electrochemical dechlorination of chlorinated disinfection byproducts (DBPs). Amorphous Ni₂P (ANP) mini-nanorod arrays were in-situ fabricated on nickel foam (NF) via a facile phosphidation process, and then used as a binde ...
DOI:
10.1016/j.watres.2019.114930

13. Anaerobic treatment of oil-contaminated wastewater with methane production using anaerobic moving bed biofilm reactors

Author:
F. Morgan-Sagastume; S. Jacobsson; L.E. Olsson; M. Carlsson; M. Gyllenhammar; I. Sárvári Horváth
Source:
Water research 2019 v.163 pp. 114851
ISSN:
0043-1354
Subject:
anaerobic treatment; biochemical oxygen demand; biogas; biomass; chemical oxygen demand; effluents; energy; methane; methane production; methanogens; moving bed biofilm reactors; oils; sludge; wastewater; water pollution
Abstract:
... Oil-contaminated wastewaters are generally treated by a combination of physico-chemical and biological methods. Interest in the anaerobic treatment of oily wastewaters has increased since it complements aerobic treatment and produces energy in the form of methane. The objectives of this study were to characterise the anaerobic process spontaneously occurring in a full-scale storage tank at a facil ...
DOI:
10.1016/j.watres.2019.07.018

14. Anaerobically-digested sludge conditioning by activated peroxymonosulfate: Significance of EDTA chelated-Fe2+

Author:
Jiaqi Wang; Min Yang; Ruiping Liu; Chengzhi Hu; Huijuan Liu; Jiuhui Qu
Source:
Water research 2019 v.160 pp. 454-465
ISSN:
0043-1354
Subject:
EDTA (chelating agent); bound water; cell viability; coagulation; confocal laser scanning microscopy; dewatering; filtration; free radicals; iron; oxidation; polymers; polysaccharides; scanning electron microscopy; sludge
Abstract:
... This study investigates the efficiency of anaerobically-digested sludge (ADS) conditioning using peroxymonosulfate (PMS) activated by EDTA chelated-Fe2+ process (PMS-EDTA-Fe2+), and the roles and mechanism of EDTA are explored by investigating the capillary suction time (CST), specific resistance to filtration (SRF), bound water content (BWC), extracellular polymeric substances (EPS), iron species ...
DOI:
10.1016/j.watres.2019.05.067

15. Analysis of trace phosphonates in authentic water samples by pre-methylation and LC-Orbitrap MS/MS

Author:
Shu Wang; Shuhui Sun; Chao Shan; Bingcai Pan
Source:
Water research 2019 v.161 pp. 78-88
ISSN:
0043-1354
Subject:
1,6-hexanediamine; carboxylic acids; derivatization; ethylenediamines; eutrophication; ion exchange; liquid chromatography; phosphates; phosphonates; phosphorous acid; phosphorus; rivers; solid phase extraction; tandem mass spectrometry; tap water; wastewater treatment; China
Abstract:
... Phosphonate is an important phosphorous species in the effluent of wastewater treatment plant (WWTP), contributing to eutrophication and interfering with phosphate removal in WWTP. It is particularly difficult to determine phosphonates in samples of complex solution chemistry, resulting in very limited information on their presence in environmental matrices. Herein, we proposed a sensitive method ...
DOI:
10.1016/j.watres.2019.05.099

16. Anode materials for sulfide oxidation in alkaline wastewater: An activity and stability performance comparison

Author:
Eleftheria Ntagia; Erika Fiset; Ligia da Silva Lima; Ilje Pikaar; Xu Zhang; Adriaan W. Jeremiasse; Antonin Prévoteau; Korneel Rabaey
Source:
Water research 2019 v.149 pp. 111-119
ISSN:
0043-1354
Subject:
alkalinity; anodes; catalysts; catalytic activity; electrochemistry; iridium; oxidation; pH; platinum; ruthenium; sodium sulfide; sulfur; wastewater
Abstract:
... Electrochemical sulfide removal can be attractive as a zero-chemical-input approach for treatment of waste streams such as spent caustics coupled to caustic recovery. A key concern is possible decline in catalytic activity, due to passivation from deposited elemental sulfur (S⁰) on the anode surface and stability limitation, due to sulfide oxidation under highly alkaline conditions. In this study, ...
DOI:
10.1016/j.watres.2018.11.004

17. Anode potentials regulate Geobacter biofilms: New insights from the composition and spatial structure of extracellular polymeric substances

Author:
Guiqin Yang; Lingyan Huang; Zhen Yu; Xiaoming Liu; Shanshan Chen; Jianxiong Zeng; Shungui Zhou; Li Zhuang
Source:
Water research 2019 v.159 pp. 294-301
ISSN:
0043-1354
Subject:
Geobacter; anodes; bacterial biomass; bioelectrochemistry; biofilm; electron transfer; polymers; polysaccharides; proteins
Abstract:
... The extracellular electron transfer (EET) efficiency in bioelectrochemical systems has been proven to be dependent on anode potentials. To explore the underlying mechanism, previous studies have mainly focused on EET conduit and bacterial biomass but rarely concerned with the role of extracellular polymeric substances (EPS) surrounding electroactive cells. In this study, the response of Geobacter ...
DOI:
10.1016/j.watres.2019.05.027

18. Antibiotic resistance and class 1 integron gene dynamics along effluent, reclaimed wastewater irrigated soil, crop continua: Elucidating potential risks and ecological constraints

Author:
Roberto B.M. Marano; Avihai Zolti; Edouard Jurkevitch; Eddie Cytryn
Source:
Water research 2019 pp. 114906
ISSN:
0043-1354
Subject:
antibiotic resistance; antibiotic resistance genes; clay soils; crops; effluents; environmental factors; gene transfer; irrigated soils; irrigation water; lysimeters; municipal wastewater; pollution; risk; wastewater irrigation; water reuse
Abstract:
... Reuse of municipal wastewater is a growing global trend, but currently there is lack of consensus regarding the potential dissemination of antibiotic resistance elements by treated wastewater irrigation. We tracked intI1, a proxy for anthropogenic pollution, and an assemblage of antibiotic resistance genes associated with mobile elements and/or wastewater (blaGES, blaOXA2, blaOXA10, blaTEM, blaCTX ...
DOI:
10.1016/j.watres.2019.114906

19. Application of (LC/)MS/MS precursor ion scan for evaluating the occurrence, formation and control of polar halogenated DBPs in disinfected waters: A review

Author:
Mengting Yang; Xiangru Zhang; Qiuhong Liang; Bo Yang
Source:
Water research 2019 v.158 pp. 322-337
ISSN:
0043-1354
Subject:
bromine; byproducts; chlorine; disinfection; drinking water; effluents; gas chromatography-mass spectrometry; iodine; liquids; swimming pools; tandem mass spectrometry; toxicity; wastewater; water quality
Abstract:
... Water disinfection can result in the unintended formation of halogenated disinfection byproducts (DBPs), which have been the subject of intensive investigation over the past 40 years. Robust methods for evaluating and characterizing the formation of halogenated DBPs are prerequisites for ultimately controlling the formation of DBPs and ensuring quality and safe disinfected water. Only a fraction o ...
DOI:
10.1016/j.watres.2019.04.033

20. Application of IWA Anaerobic Digestion Model No. 1 to simulate butyric acid, propionic acid, mixed acid, and ethanol type fermentative systems using a variable acidogenic stoichiometric approach

Author:
En Shi; Jianzheng Li; Miao Zhang
Source:
Water research 2019 v.161 pp. 242-250
ISSN:
0043-1354
Subject:
anaerobic digestion; butyric acid; case studies; chemical oxygen demand; data collection; ethanol; fermentation; hydrogen; mathematical models; mixing; pH; partial pressure; prediction; propionic acid; stoichiometry; sucrose
Abstract:
... IWA Anaerobic Digestion Model No. 1 (ADM1) is the most widely recognised and popular mathematical model for anaerobic digestion processes. However, the application of ADM1 to acidogenic fermentation is limited by its use of constant stoichiometry to describe the formation of products via carbohydrate fermentation. This study presents a modification of ADM1 using a variable acidogenic stoichiometri ...
DOI:
10.1016/j.watres.2019.05.094