PMID- 24600876 OWN - NLM STAT- MEDLINE DCOM- 20140403 LR - 20151119 IS - 0959-3330 (Print) IS - 0959-3330 (Linking) VI - 35 IP - 1-4 DP - 2014 Jan-Feb TI - Photo-Fenton degradation of phenol, 2,4-dichlorophenoxyacetic acid and 2,4-dichlorophenol mixture in saline solution using a falling-film solar reactor. PG - 364-71 AB - In this work, a saline aqueous solution of phenol, 2,4-dichlorophenoxyacetic acid (2,4-D) and 2,4-dichlorophenol (2,4-DCP) was treated by the photo-Fenton process in a falling-film solar reactor. The influence of the parameters such as initial pH (5-7), initial concentration of Fe2+ (1-2.5mM) and rate of H202 addition (1.87-3.74mmol min-1) was investigated. The efficiency of photodegradation was determined from the removal of dissolved organic carbon (DOC), described by the species degradation of phenol, 2,4-D and 2,4-DCP. Response surface methodology was employed to assess the effects of the variables investigated, i.e. [Fe2+], [H202] and pH, in the photo-Fenton process with solar irradiation. The results reveal that the variables' initial concentration of Fe2+ and H202 presents predominant effect on pollutants' degradation in terms of DOC removal, while pH showed no influence. Under the most adequate experimental conditions, about 85% DOC removal was obtained in 180 min by using a reaction system employed here, and total removal of phenol, 2,4- and 2,4-DCP mixture in about 30min. FAU - Luna, Airton J AU - Luna AJ AD - National Institute of lndustrial Property, Rio de Janeiro 20090-910, Brazil. FAU - Nascimento, Claudio A O AU - Nascimento CA AD - Department of Chemical Engineering, University of Sao Paulo, Sao Paulo 05508-900, Brazil. FAU - Foletto, Edson Luiz AU - Foletto EL AD - Department of Chemical Engineering, Federal University of Santa Maria, Santa Maria 97105-900, Brazil. FAU - Moraes, Jose E F AU - Moraes JE AD - Department of Chemical Engineering, Federal University of Sao Paulo, Sao Paulo 09972-270, Brazil. FAU - Chiavone-Filhoe, Osvaldo AU - Chiavone-Filhoe O AD - Department of Chemical Engineering, Federal University of Rio Grande do Norte, Natal 59066-800, Brazil. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Environ Technol JT - Environmental technology JID - 9884939 RN - 0 (Complex Mixtures) RN - 0 (Fenton's reagent) RN - 0 (Phenols) RN - 2577AQ9262 (2,4-Dichlorophenoxyacetic Acid) RN - 451W47IQ8X (Sodium Chloride) RN - BBX060AN9V (Hydrogen Peroxide) RN - E1UOL152H7 (Iron) SB - IM MH - 2,4-Dichlorophenoxyacetic Acid/*chemistry/isolation & purification/radiation effects MH - Complex Mixtures/chemistry/isolation & purification/radiation effects MH - Electric Power Supplies MH - Equipment Design MH - Equipment Failure Analysis MH - Hydrogen Peroxide/*chemistry/radiation effects MH - Iron/*chemistry/radiation effects MH - Phenols/*chemistry/isolation & purification/radiation effects MH - Photochemistry/*instrumentation/methods MH - Sodium Chloride/*chemistry/radiation effects MH - *Solar Energy MH - Water Purification/*instrumentation EDAT- 2014/03/08 06:00 MHDA- 2014/04/04 06:00 CRDT- 2014/03/08 06:00 PHST- 2014/03/08 06:00 [entrez] PHST- 2014/03/08 06:00 [pubmed] PHST- 2014/04/04 06:00 [medline] AID - 10.1080/09593330.2013.828762 [doi] PST - ppublish SO - Environ Technol. 2014 Jan-Feb;35(1-4):364-71. doi: 10.1080/09593330.2013.828762.