relation: https://khub.utp.edu.my/scholars/5287/
title: UV Fenton and sequencing batch reactor treatment of chlorpyrifos, cypermethrin and chlorothalonil pesticide wastewater
creator: Affam, A.C.
creator: Chaudhuri, M.
creator: Kutty, S.R.M.
creator: Muda, K.
description: This study examined the effect of operating conditions of UV Fenton pretreatment combined with aerobic sequencing batch reactor on degradation and biodegradability (BOD5/COD ratio) improvement of chlorpyrifos, cypermethrin and chlorothalonil pesticide wastewater. The optimum operating conditions in the pretreatment phase were H2O2/COD molar ratio 2.0, H2O2/Fe2+ molar ratio 25, pH 3 and reaction time 60min and achieved COD and TOC removal were 64.8 and 45.9 for COD and TOC removal, respectively and biodegradabilty (BOD5/COD ratio) improved from 0.02 to 0.31. In the aerobic SBR phase, five different UV Fenton operating conditions were investigated and UV F-SBR 1 appeared to be the most significant (p<0.05). Increasing UV Fenton pretreatment time and combining the pretreated pesticide wastewater and municipal treatment plant wastewater enabled sustenance of the SBR operation. The UV Fenton-SBR (C) achieved COD and TOC removal efficiency of 96.2 and 97.4, respectively after 40d operation at 12hr HRT. Effluent COD, TOC and BOD5 were 24, 19 and 18mgL-1, respectively and BOD5/COD ratio was 0.75. Applying the Monod model, values of the biological first order kinetic constant (Kob), cell yield (Yx/s) and decay coefficients (kd) were 0.1332hr-1, 0.5301 (mg COD mg-1 MLSS) and 0.0072hr-1, respectively. The UV Fenton-SBR (C) process is effective in treatment of pesticide wastewater containing chlorpyrifos, cypermethrin and chlorothalonil to meet Malaysian industrial effluent discharge standard. © 2014 Elsevier Ltd.
publisher: Elsevier Ltd
date: 2014
type: Article
type: PeerReviewed
identifier:   Affam, A.C. and Chaudhuri, M. and Kutty, S.R.M. and Muda, K.  (2014) UV Fenton and sequencing batch reactor treatment of chlorpyrifos, cypermethrin and chlorothalonil pesticide wastewater.  International Biodeterioration and Biodegradation, 93.  pp. 195-201.  ISSN 09648305     
relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84903441648&doi=10.1016%2fj.ibiod.2014.06.002&partnerID=40&md5=b3af74849dfb3e6f7fa42df068fa5d30
relation: 10.1016/j.ibiod.2014.06.002
identifier: 10.1016/j.ibiod.2014.06.002