PMID- 21871793 OWN - NLM STAT- MEDLINE DCOM- 20120120 LR - 20121115 IS - 1873-2976 (Electronic) IS - 0960-8524 (Linking) VI - 102 IP - 20 DP - 2011 Oct TI - Bioregeneration of granular activated carbon in simultaneous adsorption and biodegradation of chlorophenols. PG - 9497-502 LID - 10.1016/j.biortech.2011.07.107 [doi] AB - The objectives of this study are to obtain the time courses of the amount of chlorophenol adsorbed onto granular activated carbon (GAC) in the simultaneous adsorption and biodegradation processes involving 4-chlorophenol (4-CP) and 2,4-dichlorophenol (2,4-DCP), respectively, and to quantify the bioregeneration efficiency of GAC loaded with 4-CP and 2,4-DCP by direct measurement of the amount of chlorophenol adsorbed onto GAC. Under abiotic and biotic conditions, the time courses of the amount of chlorophenol adsorbed onto GAC at various GAC dosages for the initial 4-CP and 2,4-DCP concentrations below and above the biomass acclimated concentrations of 300 and 150 mg/L, respectively, were determined. The results show that the highest bioregeneration efficiency was achieved provided that the initial adsorbate concentration was lower than the acclimated concentration. When the initial adsorbate concentration was higher than the acclimated concentration, the highest bioregeneration efficiency was achieved if excess adsorbent was used. CI - Copyright (c) 2011 Elsevier Ltd. All rights reserved. FAU - Oh, Wen-Da AU - Oh WD AD - School of Chemical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia. FAU - Lim, Poh-Eng AU - Lim PE FAU - Seng, Chye-Eng AU - Seng CE FAU - Sujari, Amat Ngilmi Ahmad AU - Sujari AN LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110809 PL - England TA - Bioresour Technol JT - Bioresource technology JID - 9889523 RN - 0 (Chlorophenols) RN - 3DLC36A01X (4-chlorophenol) RN - 7440-44-0 (Carbon) RN - R669TG1950 (2,4-dichlorophenol) SB - IM MH - Adsorption MH - *Biodegradation, Environmental MH - Biomass MH - Carbon/*metabolism MH - Chlorophenols/*metabolism MH - Kinetics EDAT- 2011/08/30 06:00 MHDA- 2012/01/21 06:00 CRDT- 2011/08/30 06:00 PHST- 2011/06/24 00:00 [received] PHST- 2011/07/27 00:00 [revised] PHST- 2011/07/28 00:00 [accepted] PHST- 2011/08/30 06:00 [entrez] PHST- 2011/08/30 06:00 [pubmed] PHST- 2012/01/21 06:00 [medline] AID - S0960-8524(11)01075-3 [pii] AID - 10.1016/j.biortech.2011.07.107 [doi] PST - ppublish SO - Bioresour Technol. 2011 Oct;102(20):9497-502. doi: 10.1016/j.biortech.2011.07.107. Epub 2011 Aug 9.