PMID- 20621413
OWN - NLM
STAT- MEDLINE
DCOM- 20110215
LR  - 20131121
IS  - 1095-8630 (Electronic)
IS  - 0301-4797 (Linking)
VI  - 91
IP  - 11
DP  - 2010 Nov
TI  - Kinetic studies on the adsorption of phenol, 4-chlorophenol, and 
      2,4-dichlorophenol from water using activated carbons.
PG  - 2208-14
LID - 10.1016/j.jenvman.2010.05.018 [doi]
AB  - This study uses rate parameters in pseudo-first-order (PFO) and 
      pseudo-second-order (PSO) equations (k(1) and k(2)q(e), respectively) to judge 
      the extent for approaching equilibrium in an adsorption process. Out of fifty-six 
      systems collected from the literature, the adsorption processes with a k(2)q(e) 
      value between 0.1 and 0.8 min(-1) account for as much as 70% of the total. These 
      are classified as fast processes. This work compares the validity of PFO and PSO 
      equations for the adsorption of phenol, 4-chlorophenol (4-CP), and 
      2,4-dichlorophenol (2,4-DCP) on activated carbons prepared from pistachio shells 
      at different NaOH/char ratios. The activated carbons, recognized as microporous 
      materials, had a surface area ranging from 939 to 1936 m(2)/g. Findings show that 
      the adsorption of phenol, 4-CP, and 2,4-DCP on activated carbons had a k(2)q(e) 
      value of 0.15-0.58 min(-1), reflecting the fast process. Evaluating the operating 
      time by rate parameters revealed that k(2)q(e) was 1.6-1.8 times larger than 
      k(1). These findings demonstrate the significance of using an appropriate kinetic 
      equation for adsorption process design.
CI  - Copyright 2010 Elsevier Ltd. All rights reserved.
FAU - Tseng, Ru-Ling
AU  - Tseng RL
AD  - Department of Safety, Health and Environmental Engineering, National United 
      University, 1 Lien Da, Kung-Ching Li, Miao-Li 360, Taiwan.
FAU - Wu, Keng-Tung
AU  - Wu KT
FAU - Wu, Feng-Chin
AU  - Wu FC
FAU - Juang, Ruey-Shin
AU  - Juang RS
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - J Environ Manage
JT  - Journal of environmental management
JID - 0401664
RN  - 0 (Chlorophenols)
RN  - 0 (Phenols)
RN  - 0 (Water Pollutants, Chemical)
RN  - 16291-96-6 (Charcoal)
RN  - 55X04QC32I (Sodium Hydroxide)
SB  - IM
MH  - Biodegradation, Environmental
MH  - Charcoal/*chemistry
MH  - Chlorophenols/*pharmacokinetics
MH  - Phenols/*pharmacokinetics
MH  - *Pistacia
MH  - Sodium Hydroxide
MH  - Surface Properties
MH  - Water Pollutants, Chemical/*chemistry
MH  - Water Purification/*methods
EDAT- 2010/07/14 06:00
MHDA- 2011/02/16 06:00
CRDT- 2010/07/13 06:00
PHST- 2009/06/01 00:00 [received]
PHST- 2010/05/05 00:00 [revised]
PHST- 2010/05/28 00:00 [accepted]
PHST- 2010/07/13 06:00 [entrez]
PHST- 2010/07/14 06:00 [pubmed]
PHST- 2011/02/16 06:00 [medline]
AID - S0301-4797(10)00155-6 [pii]
AID - 10.1016/j.jenvman.2010.05.018 [doi]
PST - ppublish
SO  - J Environ Manage. 2010 Nov;91(11):2208-14. doi: 10.1016/j.jenvman.2010.05.018.