PMID- 23542216 OWN - NLM STAT- MEDLINE DCOM- 20140113 LR - 20221207 IS - 1095-8630 (Electronic) IS - 0301-4797 (Linking) VI - 121 DP - 2013 May 30 TI - Application of response surface methodology (RSM) for optimisation of COD, NH3-N and 2,4-DCP removal from recycled paper wastewater in a pilot-scale granular activated carbon sequencing batch biofilm reactor (GAC-SBBR). PG - 179-90 LID - S0301-4797(13)00104-7 [pii] LID - 10.1016/j.jenvman.2013.02.016 [doi] AB - In this study, the potential of a pilot-scale granular activated carbon sequencing batch biofilm reactor (GAC-SBBR) for removing chemical oxygen demand (COD), ammoniacal nitrogen (NH3-N) and 2,4-dichlorophenol (2,4-DCP) from recycled paper wastewater was assessed. For this purpose, the response surface methodology (RSM) was employed, using a central composite face-centred design (CCFD), to optimise three of the most important operating variables, i.e., hydraulic retention time (HRT), aeration rate (AR) and influent feed concentration (IFC), in the pilot-scale GAC-SBBR process for recycled paper wastewater treatment. Quadratic models were developed for the response variables, i.e., COD, NH3-N and 2,4-DCP removal, based on the high value (>0.9) of the coefficient of determination (R(2)) obtained from the analysis of variance (ANOVA). The optimal conditions were established at 750 mg COD/L IFC, 3.2 m(3)/min AR and 1 day HRT, corresponding to predicted COD, NH3-N and 2,4-DCP removal percentages of 94.8, 100 and 80.9%, respectively. CI - Copyright (c) 2013 Elsevier Ltd. All rights reserved. FAU - Muhamad, Mohd Hafizuddin AU - Muhamad MH AD - Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia. ir_din84@yahoo.com.my FAU - Sheikh Abdullah, Siti Rozaimah AU - Sheikh Abdullah SR FAU - Mohamad, Abu Bakar AU - Mohamad AB FAU - Abdul Rahman, Rakmi AU - Abdul Rahman R FAU - Hasan Kadhum, Abdul Amir AU - Hasan Kadhum AA LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130327 PL - England TA - J Environ Manage JT - Journal of environmental management JID - 0401664 RN - 0 (Chlorophenols) RN - 0 (Nitrogen Compounds) RN - 0 (Waste Water) RN - 16291-96-6 (Charcoal) RN - R669TG1950 (2,4-dichlorophenol) SB - IM MH - Biofilms MH - Biological Oxygen Demand Analysis MH - *Bioreactors MH - Charcoal/chemistry MH - Chlorophenols/*isolation & purification MH - Nitrogen Compounds/*isolation & purification MH - Paper MH - Pilot Projects MH - Recycling MH - Wastewater/*chemistry EDAT- 2013/04/02 06:00 MHDA- 2014/01/15 06:00 CRDT- 2013/04/02 06:00 PHST- 2012/04/16 00:00 [received] PHST- 2013/02/08 00:00 [revised] PHST- 2013/02/17 00:00 [accepted] PHST- 2013/04/02 06:00 [entrez] PHST- 2013/04/02 06:00 [pubmed] PHST- 2014/01/15 06:00 [medline] AID - S0301-4797(13)00104-7 [pii] AID - 10.1016/j.jenvman.2013.02.016 [doi] PST - ppublish SO - J Environ Manage. 2013 May 30;121:179-90. doi: 10.1016/j.jenvman.2013.02.016. Epub 2013 Mar 27.