摘要
采用高锰酸钾对颗粒活性炭进行改性。在静态条件下,对改性活性炭处理Cr(Ⅵ)废水进行了研究,考察了pH、温度等因素的影响。结果表明,改性后的活性炭对Cr(Ⅵ)的吸附量有明显的提高,提高率为79.91%。酸性环境利于Cr(Ⅵ)的吸附,且pH应控制在6左右;低温对吸附有利;吸附能较好的满足Langmuir等温线和准二级动力学曲线,最佳拟合相关系数分别为0.9943和0.9983。
The granular activated carbon was modified with KMnO_4. The treatment of Cr（Ⅵ）- containing wastewater with modified activated carbon was studied under the static state. The effects of p H,the temperature of solution were investigated. The results showd that the modified activated carbon had an obvious improvement on the adsorption of Cr（Ⅵ）,and the increased rate was 79. 91%. The acidic environment was conductive to the adsorption of Cr（Ⅵ）,and p H value should be controlled at about 6,and the low temperature was conductive to the adsorption too. The experimental results showed that the adsorption of modified activated carbon accorded with Langmuir and kinetics of pseudo- order model,the correlation coefficients were equal to 0. 9943 and 0. 9983.
出处
《广州化工》
CAS
2016年第5期116-118,共3页
GuangZhou Chemical Industry
关键词
改性活性炭
CR(VI)
废水
吸附
modified activated carbon
Cr（Ⅵ）
wastewater
adsorption
