Preparation of polymeric tannins and adsorption behavior of Cr(VI) adsorbed from aqueous solutions

被引：0
|
作者：
Zhao, Rui [1 ]
Li, Yan [1 ]
Gong, Shilei [1 ]
Jin, Li-e [1 ]
Cao, Qing [1 ]
机构：
[1] Taiyuan Univ Technol, Coll Chem Engn & Technol, Taiyuan, Peoples R China
来源：
ADVANCES IN ENERGY SCIENCE AND EQUIPMENT ENGINEERING | 2015年
关键词：
HEXAVALENT CHROMIUM; REMOVAL; MECHANISM; BIOMASS; RESIN; IONS;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The adsorption of Cr(VI) on a new adsorbent called "polymeric tannins", which were synthesized from tannic acid and formaldehyde, has been investigated by a series of batch experiments. Uniform experiments were used to obtain the optimum conditions for the synthesis. The effect of the pH, initial concentration of Cr(VI), and contact time were investigated in the adsorption experiments to obtain the optimum conditions for the sorption. The maximum adsorption capacity of Cr(VI) reached 112.5 mg.g(-1) when the temperature was 65 degrees C, the initial pH was 2.0, the initial concentration of Cr(VI) was 78 mg.L-1, and the contact time was 16 h. The results suggested that polymeric tannins synthesized under the optimum conditions are an inexpensive and efficient adsorbent for the removal of Cr(VI) from aqueous solutions.
引用
收藏
页码：2727 / 2732
页数：6
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