Adsorption of hexavalent chromium from aqueous solution by modified corn stalk: A fixed-bed column study

被引：440

作者：

Chen, Suhong ^{[1
]}

Yue, Qinyan ^{[1
]}

Gao, Baoyu ^{[1
]}

Li, Qian ^{[1
]}

Xu, Xing ^{[1
]}

Fu, Kaifang ^{[1
]}

机构：

[1] Shandong Univ, Sch Environm Sci & Engn, Shandong Key Lab Water Pollut Control & Resource, Jinan 250100, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 113卷

基金：

中国国家自然科学基金;

关键词：

Corn stalk; Hexavalent chromium; Adsorption; Fixed-bed column; METHYLENE-BLUE; LEAF POWDER; REMOVAL; CR(VI); BIOSORPTION; PREDICTION; KINETICS; SORPTION; CEMENT; SLUDGE;

D O I：

10.1016/j.biortech.2011.11.110

中图分类号：

S2 [农业工程];

学科分类号：

082806 [农业信息与电气工程];

摘要：

Continuous fixed-bed column studies were carried out by using modified corn stalk (MCS) as an adsorbent for the removal of Cr(VI) from aqueous solution. The effect of various parameters like bed depths (1.4, 2.2 and 2.9 cm), flow rate (5, 10 and 15 mL/min), influent Cr(VI) concentrations (100, 200 and 300 mg/L) and influent solution pH (2.66, 4.91 and 5.66) was investigated. The exhaustion time increased with increase of bed depth, decrease of flow rate and influent concentration. The Adams-Bohart, Thomas and Yoon-Nelson models were applied to the adsorption under varying experimental conditions to predict the breakthrough curves and to evaluate the model parameters of the fixed-bed column that are useful for process design. The Thomas and Yoon-Nelson models were in good agreement with the experimental data. The MCS column study states the value of the excellent adsorption capacity for the removal of Cr(VI) from aqueous solution. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：114 / 120

页数：7

共 34 条

[1]

Fixed-bed adsorption of reactive azo dye onto granular activated carbon prepared from waste [J].