PMID- 15743624 OWN - NLM STAT- MEDLINE DCOM- 20050715 LR - 20131121 IS - 0043-1354 (Print) IS - 0043-1354 (Linking) VI - 39 IP - 5 DP - 2005 Mar TI - Wet peroxide oxidation of chlorophenols. PG - 795-802 AB - This study evaluates the application of Wet Peroxide Oxidation (WPO) for the treatment of solutions containing 4-chlorophenol (4-CP) and 2,4-dichlorophenol (2,4-DCP). These compounds are of special interest due to their high toxicity and low biodegradability. WPO is included in the Advanced Oxidation Processes, which are technologies based on an initial formation of hydroxyl radicals that further oxidize the organic matter. The influence of some operating conditions such as temperature, dosage of hydrogen peroxide and initial concentration of the chlorophenols was studied in absence of a catalyst. The results of this study prove that 4-CP and 2,4-DCP can be completely removed from wastewaters by means of WPO. Total Organic Carbon (TOC) and 4-CP removals of 72.3% and 100%, respectively, were achieved working at 100 degrees C with 2.5 mL of H(2)O(2) and an initial concentration of 500 ppm of 4-CP after 90 min of reaction. Under the same conditions but with an initial concentration of 500 ppm of 2,4-DCP a TOC removal of 59% and a complete removal of the target compound were achieved. FAU - Garcia-Molina, Veronica AU - Garcia-Molina V AD - Departament d'Enginyeria Quimica i Metallurgia, Universitat de Barcelona, Marti i Franques 1, 08028 Barcelona, Spain. molina@angel.qui.ub.es FAU - Lopez-Arias, Marta AU - Lopez-Arias M FAU - Florczyk, Magdalena AU - Florczyk M FAU - Chamarro, Esther AU - Chamarro E FAU - Esplugas, Santiago AU - Esplugas S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Water Res JT - Water research JID - 0105072 RN - 0 (Chlorophenols) RN - 0 (Organic Chemicals) RN - 0 (Water Pollutants, Chemical) RN - 3352-57-6 (Hydroxyl Radical) RN - 3DLC36A01X (4-chlorophenol) RN - 7440-44-0 (Carbon) RN - BBX060AN9V (Hydrogen Peroxide) RN - R669TG1950 (2,4-dichlorophenol) SB - IM MH - Carbon/isolation & purification MH - Chlorophenols/chemistry/*isolation & purification MH - Hydrogen Peroxide/*chemistry MH - Hydroxyl Radical/chemistry MH - Organic Chemicals MH - Oxidation-Reduction MH - Time Factors MH - Waste Disposal, Fluid/methods MH - Water Pollutants, Chemical/*isolation & purification MH - Water Purification/*methods EDAT- 2005/03/04 09:00 MHDA- 2005/07/16 09:00 CRDT- 2005/03/04 09:00 PHST- 2004/05/14 00:00 [received] PHST- 2004/11/04 00:00 [revised] PHST- 2004/12/21 00:00 [accepted] PHST- 2005/03/04 09:00 [pubmed] PHST- 2005/07/16 09:00 [medline] PHST- 2005/03/04 09:00 [entrez] AID - S0043-1354(04)00592-5 [pii] AID - 10.1016/j.watres.2004.12.007 [doi] PST - ppublish SO - Water Res. 2005 Mar;39(5):795-802. doi: 10.1016/j.watres.2004.12.007.