title: Advanced UV/H₂O₂ oxidation of deca-bromo diphenyl ether in sediments.
abstract: Removal of BDE-209 from contaminated sediments by UV/H2O2 treatment was investigated under different reaction conditions (different UV irradiance and H2O2 concentrations). After 10h of UV/H2O2 treatment, 90% of BDE-209 was removed with a half-life time (t1/2) of 3.5h and a kinetic constant (k) of 0.22 h(-1). Possible formation of OH-PBDEs and debrominated polybromodiphenyl ethers was investigated by GC-MS and LC-MS/MS. None of the abovementioned BDE-209 by-products was found after 2.5, 5.5 and 10h of UV/H2O2 treatment. Toxicity experiments carried out with zebrafish embryos exposed to the sediment before and after the UV/H2O2 treatment did not show any morphological or behavioural alterations, suggesting that no putative debrominated or oxidation products were originated by the treatment in concentrations high enough to elicit significant toxic effects in zebrafish embryos.
authors.affiliation: Department of Environmental Chemistry, IDAEA, CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain; Department of Chemical Engineering, University of Barcelona, Marti i Franques, 1, 08082 Barcelona, Spain. Electronic address: mlfqam@cid.csic.es.
authors.forename: M L
authors.initials: ML
authors.lastname: Feo
authors.affiliation: Department of Chemical Engineering, University of Barcelona, Marti i Franques, 1, 08082 Barcelona, Spain.
authors.forename: O
authors.initials: O
authors.lastname: Gonzalez
authors.affiliation: Department of Environmental Chemistry, IDAEA, CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain.
authors.forename: E
authors.initials: E
authors.lastname: Baron
authors.affiliation: Department of Environmental Chemistry, IDAEA, CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Casado
authors.affiliation: Department of Environmental Chemistry, IDAEA, CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain.
authors.forename: B
authors.initials: B
authors.lastname: Piña
authors.affiliation: Department of Chemical Engineering, University of Barcelona, Marti i Franques, 1, 08082 Barcelona, Spain.
authors.forename: S
authors.initials: S
authors.lastname: Esplugas
authors.affiliation: Department of Environmental Chemistry, IDAEA, CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain.
authors.forename: E
authors.initials: E
authors.lastname: Eljarrat
authors.affiliation: Department of Environmental Chemistry, IDAEA, CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain; Catalan Institute for Water Research (ICRA), Parc Científic i Tecnològic de la UdG (Edifici H(2)O), C/Emili Grahit 101, E-17003 Girona, Spain.
authors.forename: D
authors.initials: D
authors.lastname: Barceló
mesh_terms: D000818:Animals; D004625:Embryo, Nonmammalian / Q000187:drug effects; D052918:Environmental Restoration and Remediation / Q000379:methods*; D005411:Flame Retardants / Q000032:analysis / Q000633:toxicity; D019015:Geologic Sediments / Q000737:chemistry*; D055768:Halogenated Diphenyl Ethers / Q000032:analysis / Q000737:chemistry* / Q000633:toxicity; D006861:Hydrogen Peroxide / Q000737:chemistry*; D010084:Oxidation-Reduction; D018675:Toxicity Tests; D014466:Ultraviolet Rays; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry* / Q000633:toxicity; D015027:Zebrafish / Q000196:embryology
chemical_list: D005411:Flame Retardants; D055768:Halogenated Diphenyl Ethers; D014874:Water Pollutants, Chemical; D006861:Hydrogen Peroxide; C010902:decabromobiphenyl ether
keywords: Advanced oxidation processes; BDE-209 removal; Remediation technologies; Sediment remediation