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You searched for: Journal name Water research Remove constraint Journal name: Water research Publication year rev 7983-2017 Remove constraint Publication year rev: 7983-2017 Source 2017 v.122 Remove constraint Source: 2017 v.122
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1. Applying rheological analysis to better understand the mechanism of acid conditioning on activated sludge dewatering

Author:
Hou-Feng Wang; Yun-Jie Ma; Hua-Jie Wang; Hao Hu; Hai-Yang Yang; Raymond J. Zeng
Source:
Water research 2017 v.122 pp. 398-406
ISSN:
0043-1354
Subject:
activated sludge; bound water; dewatering; flocculation; hydrolysis; pH; rheology; viscoelasticity
Abstract:
... The pH value is a key parameter and affects sludge dewatering. Comprehensive understanding of the effects and mechanism of pH is important for sludge treatment process and sludge dewatering. The goal of this study was to evaluate the proposed mechanism of acid conditioning on sludge dewatering based on rheological analysis. At lower sludge pH, changes in floc structure, surface properties, and flo ...
DOI:
10.1016/j.watres.2017.05.002

2. Bioindicator value of flagellates in urban wastewater treatment using membrane bioreactors

Author:
J.A. Parada-Albarracín; J. Pérez; M.A. Gómez
Source:
Water research 2017 v.122 pp. 526-535
ISSN:
0043-1354
Subject:
Peranema; activated sludge; chemical oxygen demand; denitrification; membrane bioreactors; microfiltration; nitrification; organic matter; temperature; total solids; ultrafiltration; wastewater; wastewater treatment
Abstract:
... Two experimental submerged membrane bioreactors (MBR) at the industrial scale with different membranes (microfiltration and ultrafiltration) were used to analyse the influence of the small flagellates on the lack of significance of the sludge biotic index (SBI). Also, with these systems, flagellates were analysed as bioindicators in the activated sludge of MBRs. Both facilities were operated in pa ...
DOI:
10.1016/j.watres.2017.06.033

3. Characterisation of plastic microbeads in facial scrubs and their estimated emissions in Mainland China

Author:
Pui Kwan Cheung; Lincoln Fok
Source:
Water research 2017 v.122 pp. 53-61
ISSN:
0043-1354
Subject:
aquatic environment; aquatic organisms; cosmetics; emissions; microbeads; sewage; sewage treatment; shrublands; wastewater treatment; China
Abstract:
... Plastic microbeads are often added to personal care and cosmetic products (PCCPs) as an abrasive agent in exfoliants. These beads have been reported to contaminate the aquatic environment and are sufficiently small to be readily ingested by aquatic organisms. Plastic microbeads can be directly released into the aquatic environment with domestic sewage if no sewage treatment is provided, and they c ...
DOI:
10.1016/j.watres.2017.05.053

4. Column study of enhanced Cr(VI) removal and longevity by coupled abiotic and biotic processes using Fe0 and mixed anaerobic culture

Author:
Jiawei Zhong; Weizhao Yin; Yongtao Li; Ping Li; Jinhua Wu; Gangbiao Jiang; Jingjing Gu; Hao Liang
Source:
Water research 2017 v.122 pp. 536-544
ISSN:
0043-1354
Subject:
X-ray diffraction; adsorption; chromium; coprecipitation; corrosion; energy-dispersive X-ray analysis; groundwater; iron; lepidocrocite; longevity; magnetite; microorganisms; remediation; scanning electron microscopy; synergism
Abstract:
... In this study, Fe⁰ and mixed anaerobic culture were integrated in one column to investigate the coupled abiotic and biotic effects on hexa-valent chromium (Cr(VI)) removal and column longevity with an abiotic Fe⁰ column in the control experiments. According to the breakthrough study, a slower Cr(VI) breakthrough rate of 0.19 cm/PV was observed in the biotic Fe⁰ column whereas the value in the abio ...
DOI:
10.1016/j.watres.2017.05.043

5. Comparing glow discharge plasma and ultrasound treatment for improving aerobic respiration of activated sludge

Author:
Nina Van de Moortel; Rob Van den Broeck; Jan Degrève; Raf Dewil
Source:
Water research 2017 v.122 pp. 207-215
ISSN:
0043-1354
Subject:
activated sludge; aerobiosis; biomass; carbon; nitrification; solubilization; ultrasonic treatment
Abstract:
... In this paper, a new and innovative technique, glow discharge plasma, is introduced for the treatment of activated sludge, whereby its effect on sludge solubilization, settleability, floc structure and biomass activity for carbon removal and nitrification is investigated. The obtained results are compared to the use of ultrasound for activated sludge treatment, a technique known for its potential ...
DOI:
10.1016/j.watres.2017.05.049

6. Comparison of different treatment methods for protein solubilisation from waste activated sludge

Author:
Keke Xiao; Yun Chen; Xie Jiang; Wan Yi Seow; Chao He; Yao Yin; Yan Zhou
Source:
Water research 2017 v.122 pp. 492-502
ISSN:
0043-1354
Subject:
X-ray photoelectron spectroscopy; activated sludge; alkali treatment; biocompatible materials; carbon; economic feasibility; heat treatment; molecular weight; nitrogen; pH; solubilization; total dissolved nitrogen; ultrasonic treatment; ultrasonics
Abstract:
... Biomaterials recovery from wasted activated sludge has become an increasing interesting research topic. The purpose of this study was to systemically evaluate different sludge disintegration methods (ultrasonic, alkaline, and thermal treatments) for protein solubilisation from waste activated sludge (WAS). Compared to control without treatment, the soluble protein concentration increased by 11, 23 ...
DOI:
10.1016/j.watres.2017.06.024

7. Degradation of highly consumed fluoroquinolones, penicillins and cephalosporins in distilled water and simulated hospital wastewater by UV254 and UV254/persulfate processes

Author:
Efraím A. Serna-Galvis; Franklin Ferraro; Javier Silva-Agredo; Ricardo A. Torres-Palma
Source:
Water research 2017 v.122 pp. 128-138
ISSN:
0043-1354
Subject:
ampicillin; antimicrobial properties; benzene; cephalexin; ciprofloxacin; cloxacillin; hospitals; irradiation; levofloxacin; norfloxacin; photolysis; reactive oxygen species; sulfates; wastewater
Abstract:
... In this work, three penicillins (ampicillin “AMP”, oxacillin “OXA” and cloxacillin “CLO”), two cephalosporins (cephalexin “CPX” and cephadroxyl “CPD”) and three fluoroquinolones (levofloxacin “LEV”, norfloxacin “NOR” and ciprofloxacin “CIP”) were initially treated by UV254 and persulfate activated by UV254 (UV/PS). Significant differences in degradation kinetics under UV254 irradiation were found. ...
DOI:
10.1016/j.watres.2017.05.065

8. Degradation of sulfamethoxazole using ozone and chlorine dioxide - Compound-specific stable isotope analysis, transformation product analysis and mechanistic aspects

Author:
Sarah Willach; Holger V. Lutze; Kevin Eckey; Katja Löppenberg; Michelle Lüling; Jens Terhalle; Jens-Benjamin Wolbert; Maik A. Jochmann; Uwe Karst; Torsten C. Schmidt
Source:
Water research 2017 v.122 pp. 280-289
ISSN:
0043-1354
Subject:
antibiotics; aromatic compounds; carbon; chlorine dioxide; disinfection; electron transfer; groundwater; hydroxylamine; hydroxylation; isotope fractionation; mass spectrometry; nitrogen; oxidation; ozone; pollutants; reaction mechanisms; stable isotopes; stoichiometry; sulfamethoxazole; water treatment
Abstract:
... The sulfonamide antibiotic sulfamethoxazole (SMX) is a widely detected micropollutant in surface and groundwaters. Oxidative treatment with e.g. ozone or chlorine dioxide is regularly applied for disinfection purposes at the same time exhibiting a high potential for removal of micropollutants. Especially for nitrogen containing compounds such as SMX, the related reaction mechanisms are largely unk ...
DOI:
10.1016/j.watres.2017.06.001

9. Development of a method for the characterization and operation of UV-LED for water treatment

Author:
Ataollah Kheyrandish; Madjid Mohseni; Fariborz Taghipour
Source:
Water research 2017 v.122 pp. 570-579
ISSN:
0043-1354
Subject:
electric current; guidelines; microorganisms; semiconductors; temperature; water treatment; wavelengths
Abstract:
... Tremendous improvements in semiconductor technology have made ultraviolet light-emitting diodes (UV-LEDs) a viable alternative to conventional UV sources for water treatment. A robust and validated experimental protocol for studying the kinetics of microorganism inactivation is key to the further development of UV-LEDs for water treatment. This study proposes a protocol to operate UV-LEDs and cont ...
DOI:
10.1016/j.watres.2017.06.015

10. Development of groundwater vulnerability zones in a data-scarce eogenetic karst area using Head-Guided Zonation and particle-tracking simulation methods

Author:
Dua K.S.Y. Klaas; Monzur Alam Imteaz; Arul Arulrajah
Source:
Water research 2017 v.122 pp. 17-26
ISSN:
0043-1354
Subject:
groundwater; groundwater contamination; humans; hydrologic models; karsts; land use change; risk; springs (water); Indonesia
Abstract:
... Delineation of groundwater vulnerability zones based on a valid groundwater model is crucial towards an accurate design of management strategies. However, limited data often restrain the development of a robust groundwater model. This study presents a methodology to develop groundwater vulnerability zones in a data-scarce area. The Head-Guided Zonation (HGZ) method was applied on the recharge area ...
DOI:
10.1016/j.watres.2017.05.056

11. Effective biotransformation and detoxification of anthraquinone dye reactive blue 4 by using aerobic bacterial granules

Author:
Ashvini U. Chaudhari; Dhiraj Paul; Dhiraj Dhotre; Kisan M. Kodam
Source:
Water research 2017 v.122 pp. 603-613
ISSN:
0043-1354
Subject:
Actinobacteria; Clostridia; Fourier transform infrared spectroscopy; anthraquinones; biotransformation; chemical oxygen demand; cytotoxicity; decolorization; gas chromatography-mass spectrometry; granules; metabolites; metagenomics; mutagens; pH; phytotoxicity; remediation; temperature; total suspended solids; wastewater; xenobiotics
Abstract:
... Treatment of textile wastewater containing anthraquinone dye is quite a huge challenge due to its complex aromatic structure and toxicity. Present study deals with the degradation and detoxification of anthraquinone dye reactive blue 4 using aerobic bacterial granules. Bacterial granules effectively decolorized reactive blue 4 at wide range of pH (4.0–11.0) and temperature (20–55 °C) as well as de ...
DOI:
10.1016/j.watres.2017.06.005

12. Effects of aeration on matrix temperature by infrared thermal imager and computational fluid dynamics during sludge bio-drying

Author:
Dawei Yu; Min Yang; Lu Qi; Mengmeng Liu; Yawei Wang; Yuansong Wei
Source:
Water research 2017 v.122 pp. 317-328
ISSN:
0043-1354
Subject:
aeration; air; drying; evaporation; fluid mechanics; heat; models; sludge; surface temperature; thermocouples; vapors
Abstract:
... The effect of aeration on the pile matrix temperature was investigated using thermocouples and Infrared Thermal Imager (IRI) for temperature sensing, and Computational Fluid Dynamics (CFD) for modelling of temperature variation during aeration in a full-scale sludge biodrying plant. With aeration saving of 20%, the improved strategy speeded up biodrying from 21 days to 14 days, while achieving sim ...
DOI:
10.1016/j.watres.2017.06.003

13. Effects of combined flocculant – Lanthanum modified bentonite treatment on aquatic macroinvertebrate fauna

Author:
G. Waajen; M. Pauwels; M. Lürling
Source:
Water research 2017 v.122 pp. 183-193
ISSN:
0043-1354
Subject:
Gastropoda; Oligochaeta; bentonite; ecosystems; eutrophication; fauna; ferric chloride; lakes; lanthanum; macroinvertebrates; Netherlands
Abstract:
... A low dose flocculant (FeCl3), combined with lanthanum modified bentonite (LMB) as phosphate-binding agent, has been applied for eutrophication management in Lake De Kuil (The Netherlands). After the treatment, the state of the lake shifted from hypertrophic to mesotrophic. Although macroinvertebrate fauna is important for lake ecosystems, the knowledge of its response to this lake restoration met ...
DOI:
10.1016/j.watres.2017.05.075

14. Efficient degradation of tetrabromobisphenol A by synergistic integration of Fe/Ni bimetallic catalysis and microbial acclimation

Author:
Xingxing Peng; Zhangna Wang; Jingfei Huang; Barry R. Pittendrigh; Shengwei Liu; Xiaoshan Jia; Po Keung Wong
Source:
Water research 2017 v.122 pp. 471-480
ISSN:
0043-1354
Subject:
Citrobacter; Pseudomonas; Vibrio fischeri; acclimation; catalysts; catalytic activity; growth retardation; hydrogen peroxide; hydroxyl radicals; hydroxylation; iron; metabolism; microbial communities; microorganisms; nickel; remediation; superoxide anion; technology; toxicity
Abstract:
... This study provides a novel technology for the degradation of tetrabromobisphenol A (TBBPA) via an interaction of Fe redox and a shift of functional microbial community. TBBPA was degraded by integration of synthesized Fe-Ni bimetallic particles and enriched microbial consortium within an aqueous system. This cooperative integration yielded the best TBBPA-degrading capacity (100% removal after tre ...
DOI:
10.1016/j.watres.2017.06.019

15. Fast ADM1 implementation for the optimization of feeding strategy using near infrared spectroscopy

Author:
Cyrille Charnier; Eric Latrille; Julie Jimenez; Michel Torrijos; Philippe Sousbie; Jérémie Miroux; Jean-Philippe Steyer
Source:
Water research 2017 v.122 pp. 27-35
ISSN:
0043-1354
Subject:
anaerobic digestion; chemical composition; data collection; feeding methods; least squares; methane production; models; near-infrared spectroscopy; wastes
Abstract:
... Optimization of feeding strategy is an essential issue of anaerobic co-digestion that can be greatly assisted with simulation tools such as the Anaerobic Digestion Model 1. Using this model, a set of parameters, such as the biochemical composition of the waste to be digested, its methane production yield and kinetics, has to be defined for each new substrate. In the recent years, near infrared ana ...
DOI:
10.1016/j.watres.2017.05.051

16. Holographic characterization of contaminants in water: Differentiation of suspended particles in heterogeneous dispersions

Author:
Laura A. Philips; David B. Ruffner; Fook Chiong Cheong; Jaroslaw M. Blusewicz; Priya Kasimbeg; Basma Waisi; Jeffrey R. McCutcheon; David G. Grier
Source:
Water research 2017 v.122 pp. 431-439
ISSN:
0043-1354
Subject:
bacteria; dispersions; emulsions; image analysis; light scattering; microbeads; models; particle size; polystyrenes; population distribution; refractive index; water pollution
Abstract:
... Determining the size distribution and composition of particles suspended in water can be challenging in heterogeneous multicomponent samples. Light scattering techniques can measure the distribution of particle sizes, but provide no basis for distinguishing different types of particles. Direct imaging techniques can categorize particles by shape, but offer few insights into their composition. Holo ...
DOI:
10.1016/j.watres.2017.06.006

17. Identifying structural characteristics of humic acid to static and dynamic fluorescence quenching of phenanthrene, 9-phenanthrol, and naphthalene

Author:
Lin Wang; Hao Li; Yu Yang; Di Zhang; Min Wu; Bo Pan; Baoshan Xing
Source:
Water research 2017 v.122 pp. 337-344
ISSN:
0043-1354
Subject:
sediments; dissolved organic matter; phenanthrenes; bleaching; fluorescence; carbohydrates; humic acids; decarboxylation; acid hydrolysis; naphthalene; benzene
Abstract:
... Fluorescence quenching is a sensitive and fast method to quantify the interactions between a fluorescent organic contaminant and a quencher, such as dissolved organic matter (DOM). Dynamic fluorescence quenching is resulted from molecular collision, not the real binding, and thus it complicates the binding data interpretation. On the other hand, static fluorescence quenching occurs for fluorescent ...
DOI:
10.1016/j.watres.2017.06.010

18. Impact of feed carbohydrates and nitrogen source on the production of soluble microbial products (SMPs) in anaerobic digestion

Author:
Chencheng Le; David C. Stuckey
Source:
Water research 2017 v.122 pp. 10-16
ISSN:
0043-1354
Subject:
ammonium chloride; ammonium salts; anaerobic digesters; anaerobic digestion; biogas; byproducts; chemical analysis; chlorination; feeds; fouling; free amino acids; fructose; gas chromatography-mass spectrometry; glucose; high performance liquid chromatography; membrane bioreactors; molecular weight; nitrogen; nutrients; solutes; sucrose; urea; volatile fatty acids
Abstract:
... Six stirred fill-and-draw batch reactors with a range of carbohydrate feeds (glucose, fructose and sucrose), and nitrogen sources (NH4Cl, urea) at various concentrations were used to investigate the effect of feed composition on the production of soluble microbial products (SMPs) during anaerobic digestion (AD). To gain greater insights into the SMPs produced, the composition of various fractions ...
DOI:
10.1016/j.watres.2017.05.061

19. Impacts of biostimulation and bioaugmentation on the performance and microbial ecology in methanogenic reactors treating purified terephthalic acid wastewater

Author:
Miaomiao Liu; Shanquan Wang; Masaru Konishi Nobu; Benjamin T.W. Bocher; Scott A. Kaley; Wen-Tso Liu
Source:
Water research 2017 v.122 pp. 308-316
ISSN:
0043-1354
Subject:
bacteria; bioaugmentation; biomass; genes; glucose; granules; methanogens; microbial communities; molasses; pulp and paper mills; sludge; upflow anaerobic sludge blanket reactor; wastewater
Abstract:
... Up-flow anaerobic sludge blanket (UASB) processes treating purified terephthalic acid (PTA) wastewater often face challenges associated with biomass loss. As excessive biomass loss could lead to deterioration of PTA removal, biostimulation and bioaugmentation were often practiced without understanding the microbial impact in UASB. Three laboratory-scale UASB reactors were operated with synthetic P ...
DOI:
10.1016/j.watres.2017.06.008

20. Iopromide exposure in Typha latifolia L.: Evaluation of uptake, translocation and different transformation mechanisms in planta

Author:
Hao Cui; Martin Hrabě de Angelis; Peter Schröder
Source:
Water research 2017 v.122 pp. 290-298
ISSN:
0043-1354
Subject:
Typha latifolia; X-radiation; aldehydes; effluents; environmental health; humans; hydroponics; isomers; leaves; macrophytes; medicine; phytoremediation; plant tissues; regression analysis; rhizomes; roots; surface water; wastewater treatment
Abstract:
... Iopromide is frequently detected in water bodies due to its widespread use as an X-ray contrast agent in medicine. Due to its rapid clearance from the human body and its incomplete removal by wastewater treatment, an elevation of its concentration in the environment is observed that might lead to a serious impact on human and environmental health. Alternative or additional removal technologies may ...
DOI:
10.1016/j.watres.2017.06.004