Removal of Chromate from Aqueous Solutions by Adsorption onto Commercial Activated Carbon

被引：0
|
作者：
Chaabna, Imene [1 ]
Boukhalfa, Chahrazed [1 ]
机构：
[1] Univ Mentouri Constantine, Chem Dept, Lab Pollut & Water Treatment, Constantine, Algeria
来源：
RESEARCH JOURNAL OF PHARMACEUTICAL BIOLOGICAL AND CHEMICAL SCIENCES | 2015年 / 6卷 / 06期
关键词：
chromate; activated carbon; sorption; competitive ions;
D O I：
暂无
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The present study is a contribution to the removal of chromate by commercial activated carbon in various conditions. Batch experiments were undertaken to evaluate the effects of adsorbent dose, contact time, chromium concentration and competitive ions. The obtained results show that the chromium sorption process is pH dependent; the maximum removal is observed at pH < 5. The sorption kinetics is in a relation to the solution pH; as the pH increases, the chromium removal is slower. Equilibrium is attained at onset at pH < 6 and after 45min at pH=7.5. The effects of the presence of competitive ions follow the order Ca2+>SO42->Cl-. The maximal sorption capacity obtained at pH 3.5 is about 150mg/g.
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页码：953 / 959
页数：7
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