TY - JOUR ID - scholars4004 N2 - Ferrioxalate is a visible light-responsive photocatalyst. The solar ferrioxalate/ H2O2 process has high degradation efficiency because ferrioxalate is able to absorb light strongly at longer wavelength and generates hydroxyl radical with high quantum yield. Degradation of pesticide chlorothalonil in aqueous solution by ferrioxalate/ H2O2 under solar irradiation was examined. The optimum operating conditions for treatment of a 300 mg/L chlorothalonil aqueous solution were obtained by using the central composite design of the response surface methodology. Under the optimum operating conditions (H2O2 /COD molar ratio 2.75, H2O2 /Fe3+ molar ratio 75, H2O 2 /Cmolar ratio 37.5, reaction time 90 min, and pH 3), COD, NHN, and TOC removal of 75.71, 47.11, and 54.33, respectively, was achieved and the biodegradability (BODCOD ratio) improved from zero to 0.42. Model prediction and actual removal were in close agreement (<4 error). The solar ferrioxalate/Hprocess is effective in pretreatment of the chlorothalonil aqueous solution for biological treatment. © 2013 Malay Chaudhuri et al. UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878650428&doi=10.1155%2f2013%2f435017&partnerID=40&md5=969eda6240eb5d04b950666fa826ab6e VL - 2013 JF - International Journal of Photoenergy PB - Hindawi Limited A1 - Chaudhuri, M. A1 - Zuhali, H. A1 - Affam, A.C. SN - 1110662X KW - Biodegradability; Irradiation; Light; Pesticides; Photodegradation; Solar radiation KW - Chlorothalonil; Degradation efficiency; Ferrioxalate; Hydroxyl radicals; Long wavelength; Molar ratio; Optimum operating conditions; Pesticides - chlorothalonil; Solar irradiation; Visible-light responsive photocatalysts KW - Solutions TI - Degradation of pesticide chlorothalonil by visible light-responsive photocatalyst ferrioxalate and H2O2 under solar irradiation Y1 - 2013/// N1 - cited By 11 AV - none ER -