Kinetic, equilibrium and thermodynamic studies on removal of Cr(VI) by activated carbon prepared from Ricinus communis seed shell

被引：25
|
作者：
Thamilarasu, P. [2 ]
Karunakaran, K. [1 ]
机构：
[1] Sona Coll Technol, Dept Chem, Salem 636005, Tamil Nadu, India
[2] AMS Engn Coll, Dept Chem, Namakkal 637013, Tamil Nadu, India
来源：
CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 2013年 / 91卷 / 01期
关键词：
adsorption; isotherm; activated carbon; chromium and seed shell; AQUEOUS-SOLUTION; WASTE-WATER; HEXAVALENT CHROMIUM; INDUSTRIAL-WASTE; HEAVY-METALS; ADSORPTION; BIOSORPTION; SORPTION; NICKEL(II); BATCH;
D O I：
10.1002/cjce.20675
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A study on the removal of hexavalent chromium ions from aqueous solution by using activated carbon prepared from Ricinus communis has been done. In this process, it was carbonised and activated by treating with concentrated sulphuric acid followed by heating for 5?h at 500 degrees C. Batch adsorption experiments are also carried out as a function of pH, contact time, initial concentration of the adsorbate, adsorbent dosage and temperature. The experimental data are fitted well to the Freundlich adsorption isotherm. Thermodynamic parameters such as ?H degrees ?S degrees and ?G degrees are calculated, which indicated that the adsorption is spontaneous and endothermic in nature. Adsorbent used in this study is characterised by FT-IR and SEM before and after the adsorption of Cr(VI). (c) 2011 Canadian Society for Chemical Engineering
引用
收藏
页码：9 / 18
页数：10
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