DOI: 10.1016/j.watres.2018.07.072
Scopus记录号: 2-s2.0-85050938264
论文题名: Abatement of 2,4-D by H2O2 solar photolysis and solar photo-Fenton-like process with minute Fe(III) concentrations
作者: Serra-Clusellas A. ; De Angelis L. ; Lin C.-H. ; Vo P. ; Bayati M. ; Sumner L. ; Lei Z. ; Amaral N.B. ; Bertini L.M. ; Mazza J. ; Pizzio L.R. ; Stripeikis J.D. ; Rengifo-Herrera J.A. ; Fidalgo de Cortalezzi M.M.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 144 起始页码: 572
结束页码: 580
语种: 英语
英文关键词: 2,4-D
; Chlorinated degradation by-products
; Hydrogen peroxide solar photolysis
; Solar photo-fenton-like
; Water treatment
Scopus关键词: Electric lamps
; Herbicides
; Hydrogen peroxide
; Image processing
; Irradiation
; Organic carbon
; Oxidation
; Peroxides
; Photodegradation
; Photolysis
; Radiation
; Solar power generation
; Surface waters
; Water treatment
; Weed control
; 2,4-D
; Chlorinated aromatics
; Degradation by-products
; Dissolved organic carbon
; Iron concentrations
; Solar light irradiation
; Solar photo-Fenton
; Solar photolysis
; Iron compounds
; 2,4 dichlorophenoxyacetic acid
; dissolved organic matter
; ferric ion
; hydrogen peroxide
; organic carbon
; surface water
; xenon
; 2,4 dichlorophenoxyacetic acid
; byproduct
; concentration (composition)
; dissolved organic carbon
; hydrogen peroxide
; iron
; photolysis
; pollutant removal
; solar activity
; water treatment
; Article
; concentration (parameters)
; controlled study
; degradation
; Fenton reaction
; irradiation
; liquid chromatography-mass spectrometry
; pH
; photolysis
; priority journal
; solar radiation
; sunlight
; waste component removal
; water treatment
英文摘要: The Photo-Fenton-like (PF-like) process with minute Fe(III) concentrations and the Hydrogen Peroxide Photolysis (HPP), using Xe-lamp or solar light as sources of irradiation, were efficiently applied to eliminate the herbicide 2,4-D from water. PF-like experiments concerning ferric and H2O2 concentrations of 0.6 mg L−1 and 20 mg L−1 respectively, using Xenon lamps (Xe-lamps) as a source of irradiation and 2,4-D concentrations of 10 mg L−1 at pH 3.6, exhibited complete 2,4-D degradation and 77% dissolved organic carbon (DOC) removal after 30 min and 6 h of irradiation respectively whereas HPP (in absence of ferric ions) experiments showed a 2,4-D reduction and DOC removal of 90% and 7% respectively after 6 h of irradiation. At pH 7.0, HPP process achieved a 2,4-D abatement of approximately 75% and a DOC removal of 4% after 6 h. PF-like exhibited slightly improved 2,4-D and DOC removals (80% and 12% respectively) after the same irradiation time probably due to the low pH reduction (from 7.0 to 5.6). Several chlorinated-aromatic intermediates were identified by HPLC-MS. These by-products were efficiently removed by PF at pH 3.6, whereas at neutral PF-like and acid or neutral HPP, they were not efficiently degraded. With natural solar light irradiation, 10 and 1 mg L−1 of 2,4-D were abated using minor H2O2 concentrations (3, 6, 10 and 20 mg L−1) and iron at 0.6 mg L−1 in Milli-Q water. Similar results to Xe-lamp experiments were obtained, where solar UV-B + A light H2O2 photolysis (HPSP) and solar photo-Fenton-like (SPF-like) played an important role and even at low H2O2 and ferric concentrations of 3 and 0.6 mg L−1 respectively, 2,4-D was efficiently removed at pH 3.6. Simulated surface water at pH 3.6 containing 1 mg L−1 2,4-D, 20 mg L−1 H2O2 and 0.6 mg L−1 Fe(III) under natural sunlight irradiation efficiently removed the herbicide and its main metabolite 2,4-DCP after 30 min of treatment while at neutral pH, 40% of herbicide degradation was achieved. In the case of very low iron concentrations (0.05 mg L−1) at acid pH, 150 min of solar treatment was required to remove 2,4-D. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112531
Appears in Collections: 气候减缓与适应
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作者单位: Departamento de Ingeniería Química, Instituto Tecnológico de Buenos Aires - ITBA, Av. Eduardo Madero 399, Ciudad Autónoma de Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad Autónoma de Buenas Aires, Godoy Cruz, 2290 (C1425FQB), Argentina; Center for Agroforestry, School of Natural Resources, University of Missouri, Columbia, MO, United States; Department of Civil and Environmental Engineering, University of Missouri, Columbia, MO, United States; MU Metabolomics Center, University of Missouri, Columbia, MO, United States; Department of Chemistry, Centro Federal de Educacão Tecnológica de Minas Gerais, CEFET-MG, Av. Amazonas 5253, Belo Horizonte, MG 30421-169, Brazil; Centro de Investigación y Desarrollo en Ciencias Aplicadas “Dr. J.J. Ronco” (CINDECA), Departamento de Química, Facultad de Ciencias Exactas, UNLP-CCT La Plata, CONICET, 47 No. 257, La Plata, Buenos Aires 1900, Argentina
Recommended Citation:
Serra-Clusellas A.,De Angelis L.,Lin C.-H.,et al. Abatement of 2,4-D by H2O2 solar photolysis and solar photo-Fenton-like process with minute Fe(III) concentrations[J]. Water Research,2018-01-01,144