PMID- 18818013 OWN - NLM STAT- MEDLINE DCOM- 20090518 LR - 20171116 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 164 IP - 2-3 DP - 2009 May 30 TI - Adsorption isotherms, kinetics, thermodynamics and desorption studies of 2,4,6-trichlorophenol on oil palm empty fruit bunch-based activated carbon. PG - 473-82 LID - 10.1016/j.jhazmat.2008.08.025 [doi] AB - The adsorption characteristics of 2,4,6-trichlorophenol (TCP) on activated carbon prepared from oil palm empty fruit bunch (EFB) were evaluated. The effects of TCP initial concentration, agitation time, solution pH and temperature on TCP adsorption were investigated. TCP adsorption uptake was found to increase with increase in initial concentration, agitation time and solution temperature whereas adsorption of TCP was more favourable at acidic pH. The adsorption equilibrium data were best represented by the Freundlich and Redlich-Peterson isotherms. The adsorption kinetics was found to follow the pseudo-second-order kinetic model. The mechanism of the adsorption process was determined from the intraparticle diffusion model. Boyd plot revealed that the adsorption of TCP on the activated carbon was mainly governed by particle diffusion. Thermodynamic parameters such as standard enthalpy (DeltaH degrees ), standard entropy (DeltaS degrees ), standard free energy (DeltaG degrees ) and activation energy were determined. The regeneration efficiency of the spent activated carbon was high, with TCP desorption of 99.6%. FAU - Tan, I A W AU - Tan IA AD - School of Chemical Engineering, Universiti Sains Malaysia, Nibong Tebal, Penang, Malaysia. FAU - Ahmad, A L AU - Ahmad AL FAU - Hameed, B H AU - Hameed BH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080819 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 RN - 0 (Chlorophenols) RN - 0 (Industrial Waste) RN - 0 (Mutagens) RN - 0 (Plant Oils) RN - 0 (Water Pollutants, Chemical) RN - 16291-96-6 (Charcoal) RN - 5QUO05548Z (Palm Oil) RN - MHS8C5BAUZ (2,4,6-trichlorophenol) SB - IM MH - Adsorption MH - Charcoal/*chemistry MH - Chlorophenols/chemistry/*isolation & purification MH - Industrial Waste MH - Kinetics MH - Mutagens/isolation & purification MH - Palm Oil MH - Plant Oils/*chemistry MH - *Thermodynamics MH - Water Pollutants, Chemical/*isolation & purification MH - Water Purification/methods EDAT- 2008/09/27 09:00 MHDA- 2009/05/19 09:00 CRDT- 2008/09/27 09:00 PHST- 2008/05/16 00:00 [received] PHST- 2008/08/08 00:00 [revised] PHST- 2008/08/11 00:00 [accepted] PHST- 2008/09/27 09:00 [pubmed] PHST- 2009/05/19 09:00 [medline] PHST- 2008/09/27 09:00 [entrez] AID - S0304-3894(08)01223-5 [pii] AID - 10.1016/j.jhazmat.2008.08.025 [doi] PST - ppublish SO - J Hazard Mater. 2009 May 30;164(2-3):473-82. doi: 10.1016/j.jhazmat.2008.08.025. Epub 2008 Aug 19.