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You searched for: Journal name Water research Remove constraint Journal name: Water research Publication Year 2015 Remove constraint Publication Year: 2015 Subject aqueous solutions Remove constraint Subject: aqueous solutions Text Availability Citation in PubAg Remove constraint Text Availability: Citation in PubAg
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1. Degradation of flumequine in aqueous solution by persulfate activated with common methods and polyhydroquinone-coated magnetite/multi-walled carbon nanotubes catalysts

Author:
Mingbao Feng; Ruijuan Qu; Xiaoling Zhang; Ping Sun; Yunxia Sui; Liansheng Wang; Zunyao Wang
Source:
Water research 2015 v.85 pp. 1-10
ISSN:
0043-1354
Subject:
antibiotics; aquatic organisms; aqueous solutions; bicarbonates; carbon; carbon nanotubes; catalysts; copper; dissolved organic matter; electron paramagnetic resonance spectroscopy; flumequine; heat; hydroxyl radicals; hydroxylation; inorganic ions; iron; municipal wastewater; oxidation; pH; sulfates; surface water
Abstract:
... In recent years, flumequine (FLU) has been ubiquitously detected in surface waters and municipal wastewaters. In light of its potential negative impacts to aquatic species, growing concern has been arisen for the removal of this antibiotic from natural waters. In this study, the kinetics, degradation mechanisms and pathways of aqueous FLU by persulfate (PS) oxidation were systematically determined ...
DOI:
10.1016/j.watres.2015.08.011

2. Degradation of tyrosol by a novel electro-Fenton process using pyrite as heterogeneous source of iron catalyst

Author:
Salah Ammar; Mehmet A. Oturan; Lazhar Labiadh; Amor Guersalli; Ridha Abdelhedi; Nihal Oturan; Enric Brillas
Source:
Water research 2015 v.74 pp. 77-87
ISSN:
0043-1354
Subject:
4-hydroxybenzoic acid; aqueous solutions; benzoquinones; catalysts; catechol; electrodes; gas chromatography-mass spectrometry; hydrogen peroxide; hydroxyl radicals; hydroxylation; iron; mineralization; olive oil mills; oxalic acid; oxidation; pH; pyrite; reversed-phase high performance liquid chromatography; specific energy; wastewater
Abstract:
... Tyrosol (TY) is one of the most abundant phenolic components of olive oil mill wastewaters. Here, the degradation of synthetic aqueous solutions of 0.30 mM TY was studied by a novel heterogeneous electro-Fenton (EF) process, so-called EF-pyrite, in which pyrite powder was the source of Fe2+ catalyst instead of a soluble iron salt used in classical EF. Experiments were performed with a cell equippe ...
DOI:
10.1016/j.watres.2015.02.006

3. Degradation rates of benzotriazoles and benzothiazoles under UV-C irradiation and the advanced oxidation process UV/H2O2

Author:
Sabrina Bahnmüller; Clara H. Loi; Kathryn L. Linge; Urs von Gunten; Silvio Canonica
Source:
Water research 2015 v.74 pp. 143-154
ISSN:
0043-1354
Subject:
aquatic environment; aqueous solutions; energy; hydrogen peroxide; hydroxyl radicals; irradiation; lamps; oxidation; pH; photons; river water; ultraviolet radiation; wastewater; water pollution
Abstract:
... Benzotriazoles (BTs) and benzothiazoles (BTHs) are extensively used chemicals found in a wide range of household and industrial products. They are chemically stable and are therefore ubiquitous in the aquatic environment. The present study focuses on the potential of ultraviolet (UV) irradiation, alone or in combination with hydrogen peroxide (H2O2), to remove BTs and BTHs from contaminated waters ...
DOI:
10.1016/j.watres.2014.12.039

4. Fast mineralization and detoxification of amoxicillin and diclofenac by photocatalytic ozonation and application to an urban wastewater

Author:
Nuno F.F. Moreira; Carla A. Orge; Ana R. Ribeiro; Joaquim L. Faria; Olga C. Nunes; M. Fernando R. Pereira; Adrián M.T. Silva
Source:
Water research 2015 v.87 pp. 87-96
ISSN:
0043-1354
Subject:
Escherichia coli; Staphylococcus aureus; amoxicillin; aqueous solutions; carbon; diclofenac; drugs; growth retardation; hormones; microorganisms; mineralization; oxidation; ozonation; ozone; pesticides; photocatalysis; photolysis; pollutants; toxicity; vapors; wastewater
Abstract:
... The degradation of two organic pollutants (amoxicillin and diclofenac) in 0.1 mM aqueous solutions was studied by using advanced oxidation processes, namely ozonation, photolysis, photolytic ozonation, photocatalysis and photocatalytic ozonation. Diclofenac was degraded quickly under direct photolysis by artificial light (medium-pressure vapor arc, λexc > 300 nm), while amoxicillin remained very s ...
DOI:
10.1016/j.watres.2015.08.059

5. Identification of phototransformation products of the antiepileptic drug gabapentin: Biodegradability and initial assessment of toxicity

Author:
Manuel Herrmann; Jakob Menz; Oliver Olsson; Klaus Kümmerer
Source:
Water research 2015 v.85 pp. 11-21
ISSN:
0043-1354
Subject:
anticonvulsants; aqueous solutions; bacteria; biodegradability; carbon; disinfection; drinking water; epilepsy; genes; genotoxicity; human health; hydrologic cycle; luminescence; mass spectrometry; pain; prediction; screening; sewage treatment; surface water; teratogenicity; ultraviolet radiation; wastewater treatment
Abstract:
... The anticonvulsant drug Gabapentin (GAB) is used for the treatment of various diseases (e.g. epilepsy, bipolar disorder, neuropathic pain) and is being consumed in high amounts. As GAB is not metabolized and shows a weak elimination in sewage treatment plants (STPs), it has been detected in surface water and even in raw potable water. Moreover, the confirmed teratogenic effects of GAB indicate the ...
DOI:
10.1016/j.watres.2015.08.004

6. Moving towards sustainable resources: Recovery and fractionation of nutrients from dairy manure digestate using membranes

Author:
Michael L. Gerardo; Nasser H.M. Aljohani; Darren L. Oatley-Radcliffe; Robert W. Lovitt
Source:
Water research 2015 v.80 pp. 80-89
ISSN:
0043-1354
Subject:
ammonia; ammonium nitrogen; aqueous solutions; dairy manure; electrostatic interactions; fractionation; industry; ions; nanofiltration; nitrogen; nutrients; pH; phosphates; phosphorus; value added
Abstract:
... The fractionation of nitrogen (as ammonia/ammonium) and phosphorus (as phosphate ions) present in the dairy manure digestate was investigated using a nanofiltration membrane NF270. The filtration and separation efficiencies were correlated to pH across the range 3 < pH < 11. Filtration at pH 11 enabled higher permeate flux of 125–150 LMH at 20 bar, however rejection of ammonia was high at 30–36% a ...
DOI:
10.1016/j.watres.2015.05.016

7. Potential for use of industrial waste materials as filter media for removal of Al, Mo, As, V and Ga from alkaline drainage in constructed wetlands – Adsorption studies

Author:
T. Hua; R.J. Haynes; Y.-F. Zhou; A. Boullemant; I. Chandrawana
Source:
Water research 2015 v.71 pp. 32-41
ISSN:
0043-1354
Subject:
adsorbents; adsorption; alum; aluminum; aluminum hydroxide; aqueous solutions; arsenic; bauxite; constructed wetlands; drainage; drainage water; equations; furnaces; industrial wastes; ions; models; molybdenum; pH; sand; seawater; silica; slags; sludge; sorption isotherms; water treatment
Abstract:
... The potential to remove Al, Mo, V, As and Ga from alkaline (pH 8.0–8.6) drainage originating from seawater neutralized bauxite processing residue storage areas using constructed wetland technology was studied in a laboratory study. Bauxite processing residue sand, bauxite, alum water treatment sludge and blast furnace slag were investigated as potential active filter materials. Al was shown to pre ...
DOI:
10.1016/j.watres.2014.12.036

8. UV photolysis kinetics of sulfonamides in aqueous solution based on optimized fluence quantification

Author:
Junfeng Lian; Zhimin Qiang; Mengkai Li; James R. Bolton; Jiuhui Qu
Source:
Water research 2015 v.75 pp. 43-50
ISSN:
0043-1354
Subject:
absorption; antibiotics; aqueous solutions; disinfection; fluorescence; light intensity; oxidation; pH; photolysis; reaction kinetics; silica; sulfonamides; ultraviolet-visible spectroscopy; wastewater
Abstract:
... The ultraviolet (UV) photolysis kinetics of eight sulfonamide (SA) antibiotics was investigated in a quasi-collimated beam apparatus. By using a micro fluorescent silica detector to monitor online the dynamic irradiance fluctuation, the accuracy in fluence quantification could be increased by up to 15%. Solution pH governed the speciation of selected SAs, thus impacting significantly their molar a ...
DOI:
10.1016/j.watres.2015.02.026

9. A new application of high-efficient silver salts-based photocatalyst under natural indoor weak light for wastewater cleaning

Author:
Xia Hua; Fei Teng; Yunxuan Zhao; Juan Xu; Chuangye Xu; Yang Yang; Qiqi Zhang; Shashi Paul; Yi Zhang; Mindong Chen; Xudong Zhao
Source:
Water research 2015 v.81 pp. 366-374
ISSN:
0043-1354
Subject:
aqueous solutions; xenon; wastewater; chlorides; silver; water purification; air; methyl orange; dyes; phosphates; irradiation; cleaning; photocatalysts; energy conservation; inorganic ions
Abstract:
... As a high-quantum-efficiency photocatalyst, the serious photo-corrosion of silver phosphate (Ag3PO4), limits the practical applications in water purification and challenges us. Herein, Ag3PO4 is found to have a high stability under natural indoor weak light irradiation, suggesting that we can employ it by adopting a new application strategy. In our studies, rhodamine B (RhB, cationic dye), methyl ...
DOI:
10.1016/j.watres.2015.06.018

10. Batch and column sorption of arsenic onto iron-impregnated biochar synthesized through hydrolysis

Author:
Xin Hu; Zhuhong Ding; Andrew R. Zimmerman; Shengsen Wang; Bin Gao
Source:
Water research 2015 v.68 pp. 206-216
ISSN:
0043-1354
Subject:
Carya; X-ray diffraction; aqueous solutions; arsenic; biochar; chemical speciation; energy; energy-dispersive X-ray analysis; hydrolysis; iron; scanning electron microscopes; sorption
Abstract:
... Iron (Fe)-impregnated biochar, prepared through a novel method that directly hydrolyzes iron salt onto hickory biochar, was investigated for its performance as a low-cost arsenic (As) sorbent. Although iron impregnation decreased the specific surface areas of the biochar, the impregnated biochar showed much better sorption of aqueous As (maximum sorption capacity of 2.16 mg g−1) than the pristine ...
DOI:
10.1016/j.watres.2014.10.009

11. Direct UV photolysis of selected pharmaceuticals, personal care products and endocrine disruptors in aqueous solution

Author:
Jules C. Carlson; Mihaela I. Stefan; J. Mark Parnis; Chris D. Metcalfe
Source:
Water research 2015 v.84 pp. 350-361
ISSN:
0043-1354
Subject:
absorption; acetaminophen; acids; aquatic environment; aqueous solutions; drinking water; endocrine-disrupting chemicals; estrone; ibuprofen; ionization; lamps; mercury; models; pH; personal care products; phosphates; photolysis; pollutants; sulfamethoxazole; vapors
Abstract:
... Pharmaceuticals and personal care products (PPCPs), and endocrine disrupting compounds (EDCs) are micropollutants of emerging concern that have been detected in the aquatic environment and in some cases, in drinking water at nanogram per liter levels. The goal of this study was to evaluate the removal of 15 model PPCPs and EDCs from water by direct UV photolysis, using either low (LP)–or medium (M ...
DOI:
10.1016/j.watres.2015.04.013

12. Phosphate and arsenate removal efficiency by thermostable ferritin enzyme from Pyrococcus furiosus using radioisotopes

Author:
Ana-Maria Sevcenco; Monica Paravidino; Johannes S. Vrouwenvelder; Hubert Th. Wolterbeek; Mark C.M. van Loosdrecht; Wilfred R. Hagen
Source:
Water research 2015 v.76 pp. 181-186
ISSN:
0043-1354
Subject:
Pyrococcus furiosus; absorption; aqueous solutions; arsenates; binding properties; biofouling; drinking water; ferritin; phosphates; phosphorus; radiography; radionuclides; thermal stability
Abstract:
... Oxo-anion binding properties of the thermostable enzyme ferritin from Pyrococcus furiosus were characterized with radiography. Radioisotopes 32P and 76As present as oxoanions were used to measure the extent and the rate of their absorption by the ferritin. Thermostable ferritin proved to be an excellent system for rapid phosphate and arsenate removal from aqueous solutions down to residual concent ...
DOI:
10.1016/j.watres.2015.02.054

13. Photolysis of natural β-triketonic herbicides in water

Author:
Aurélien Trivella; Malgorzata Stawinoga; Franck E. Dayan; Charles L. Cantrell; Patrick Mazellier; Claire Richard
Source:
Water research 2015 v.78 pp. 28-36
ISSN:
0043-1354
Subject:
aqueous solutions; carbon; half life; herbicides; hydrogen; ionization; irradiation; isomerization; ketones; photolysis; photooxidation; solar radiation; surface water
Abstract:
... The fate of four natural β-triketones (leptospermone, isoleptospermone, grandiflorone and flavesone, pKa = 4.0–4.5) in aqueous solution, in the dark and upon simulated solar light irradiation was investigated. In anionic form, β-triketones undergo slow dark oxidation and photolysis with polychromatic quantum yields varying from 1.2 × 10−4 to 3.7 × 10−4. Leptospermone and grandiflorone are the most ...
Handle:
10113/62275
DOI:
10.1016/j.watres.2015.03.026

14. Remediation of 17-α-ethinylestradiol aqueous solution by photocatalysis and electrochemically-assisted photocatalysis using TiO2 and TiO2/WO3 electrodes irradiated by a solar simulator

Author:
Haroldo G. Oliveira; Leticia H. Ferreira; Rodnei Bertazzoli; Claudia Longo
Source:
Water research 2015 v.72 pp. 305-314
ISSN:
0043-1354
Subject:
aqueous solutions; carbon; electrodes; electrons; energy; fluorescence; harvesting; heat treatment; high performance liquid chromatography; hybrids; irradiation; oral contraceptives; oxidation; photocatalysis; photocatalysts; remediation; semiconductors; solar radiation; titanium dioxide; tungsten oxide; ultraviolet-visible spectroscopy
Abstract:
... TiO2 and TiO2/WO3 electrodes, irradiated by a solar simulator in configurations for heterogeneous photocatalysis (HP) and electrochemically-assisted HP (EHP), were used to remediate aqueous solutions containing 10 mg L−1 (34 μmol L−1) of 17-α-ethinylestradiol (EE2), active component of most oral contraceptives. The photocatalysts consisted of 4.5 μm thick porous films of TiO2 and TiO2/WO3 (molar r ...
DOI:
10.1016/j.watres.2014.08.042

15. A generalised chemical precipitation modelling approach in wastewater treatment applied to calcite

Author:
Christian Kazadi Mbamba; Damien J. Batstone; Xavier Flores-Alsina; Stephan Tait
Source:
Water research 2015 v.68 pp. 342-353
ISSN:
0043-1354
Subject:
aqueous solutions; calcite; chemical precipitation; environmental factors; industry; ionic strength; magnesium; model validation; pH; simulation models; temperature; thermodynamics; titration; wastewater; wastewater treatment
Abstract:
... Process simulation models used across the wastewater industry have inherent limitations due to over-simplistic descriptions of important physico–chemical reactions, especially for mineral solids precipitation. As part of the efforts towards a larger Generalized Physicochemical Modelling Framework, the present study aims to identify a broadly applicable precipitation modelling approach. The study u ...
DOI:
10.1016/j.watres.2014.10.011