PMID- 23185965
OWN - NLM
STAT- MEDLINE
DCOM- 20131111
LR  - 20131121
IS  - 1520-5118 (Electronic)
IS  - 0021-8561 (Linking)
VI  - 60
IP  - 50
DP  - 2012 Dec 19
TI  - Kinetic and thermodynamic studies of toluene, ethylbenzene, and m-xylene 
      adsorption from aqueous solutions onto KOH-activated multiwalled carbon 
      nanotubes.
PG  - 12245-53
LID - 10.1021/jf304104z [doi]
AB  - Multiwalled carbon nanotubes activated by KOH (CNTs-KOH) were synthesized and 
      employed as adsorbents to study adsorption characteristics of toluene, 
      ethylbenzene, and m-xylene (TEX) from aqueous solutions. Kinetics data were 
      fitted by pseudo-second-order model, and intraparticle diffusion was not the only 
      rate-controlling step. Adsorption isotherm data could fit well with Langmuir, 
      Freundlich, and Dubinin-Radushkevich (D-R) models. The maximum adsorption 
      capacities on CNTs-KOH are 87.12, 322.05, and 247.83 mg/g for toluene, 
      ethylbenzene, and m-xylene, respectively. The adsorption capacities of TEX onto 
      CNTs-KOH increased with contact time and decreased with temperature and are not 
      significantly affected by humic acid. However, Cr(6+) could decrease adsorption 
      of TEX by 17.66, 4.51, and 12.69% as (K(d)(1) - K(d)(2))/K(d)(1), respectively. 
      The thermodynamics parameters indicated that adsorption was a feasible, 
      exothermic, and spontaneous process in nature and a physisorption process. The 
      present CNTs-KOH show a better EX adsorption performance than other adsorbents, 
      suggesting that CNTs-KOH are promising EX adsorbents in wastewater treatment.
FAU - Yu, Fei
AU  - Yu F
AD  - School of Environmental Science and Engineering, Shanghai Jiao Tong University, 
      Shanghai, China.
FAU - Wu, Yanqing
AU  - Wu Y
FAU - Li, Xiaoman
AU  - Li X
FAU - Ma, Jie
AU  - Ma J
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20121205
PL  - United States
TA  - J Agric Food Chem
JT  - Journal of agricultural and food chemistry
JID - 0374755
RN  - 0 (Benzene Derivatives)
RN  - 0 (Hydroxides)
RN  - 0 (Nanotubes, Carbon)
RN  - 0 (Potassium Compounds)
RN  - 0 (Xylenes)
RN  - 3FPU23BG52 (Toluene)
RN  - L5I45M5G0O (ethylbenzene)
RN  - O9XS864HTE (3-xylene)
RN  - WZH3C48M4T (potassium hydroxide)
SB  - IM
MH  - Benzene Derivatives/*chemistry
MH  - Hydroxides/*chemistry
MH  - Kinetics
MH  - Microscopy, Electron, Transmission
MH  - *Nanotubes, Carbon
MH  - Potassium Compounds/*chemistry
MH  - Thermodynamics
MH  - Toluene/*chemistry
MH  - Xylenes/*chemistry
EDAT- 2012/11/29 06:00
MHDA- 2013/11/12 06:00
CRDT- 2012/11/29 06:00
PHST- 2012/11/29 06:00 [entrez]
PHST- 2012/11/29 06:00 [pubmed]
PHST- 2013/11/12 06:00 [medline]
AID - 10.1021/jf304104z [doi]
PST - ppublish
SO  - J Agric Food Chem. 2012 Dec 19;60(50):12245-53. doi: 10.1021/jf304104z. Epub 2012 
      Dec 5.