Characterization and use of activated carbons prepared from bagasses for liquid-phase adsorption

被引：148
作者：
Juang, RS [1 ]
Wu, FC
Tseng, RL
机构：
[1] Yuan Ze Univ, Dept Chem Engn, Chungli 320, Taiwan
[2] Lien Ho Inst Technol, Dept Chem Engn, Miaoli 360, Taiwan
[3] Lien Ho Inst Technol, Dept Safety Hlth & Environm Engn, Saito 360, Taiwan
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2002年 / 201卷 / 1-3期
关键词：
activated carbon; bagasse; characterization; adsorption kinetics; dyes; phenol;
D O I：
10.1016/S0927-7757(01)01004-4
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The adsorption of two commercial dyes and phenol from water on activated carbons was investigated at 30 C. The carbons were prepared from bagasses and were activated by steam with different extents of burn-off by varying the temperature in the range of 750-840 degreesC. Pore structures of the carbons were characterized by the t-plot method based on N-2 adsorption isotherms. Three simplified models including the pseudo-first-order equation, pseudo-second-order equation, and intraparticle diffusion models were used to test the adsorption kinetics. It was shown that the adsorption of dyes could be best fitted by the intraparticle diffusion model; the kinetic parameter was calculated and correlated with the extent of burn-off of the carbons. Neither of the three models had a preference for describing the adsorption of phenol, presumably due to its combined control of chemisorption and intraparticle diffusion. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：191 / 199
页数：9
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