当前位置: 首页 > 文章 > 炭化水竹对水中Cr(Ⅵ)的吸附性能及热力学研究 节水灌溉 2014 (12) 60-63
Position: Home > Articles > Adsorption and Thermodynamic Character of Carbonized Fishscale Bamboo for Cr(Ⅵ)in Aqueous Solution Water Saving Irrigation 2014 (12) 60-63

炭化水竹对水中Cr(Ⅵ)的吸附性能及热力学研究

作  者:
张云;陈金发;杨鹏;周昔元;王玉贤
单  位:
四川师范大学生命科学学院西昌学院工程技术学院;四川师范大学生命科学学院西昌学院农业科学学院
关键词:
水竹;吸附;Cr(Ⅵ);吸附等温方程
摘  要:
以炭化处理后的水竹为吸附剂,研究了竹炭对重金属Cr(Ⅵ)的吸附性能,分别考察了溶液的pH、竹炭用量、溶液初始浓度和接触时间等因素对吸附过程的影响,探究了竹炭对Cr(Ⅵ)的吸附热力学机理。结果表明:当反应体系pH值为2、竹炭投加量0.6g、初始浓度135mg/L、反应温度25℃、吸附时间150min时,处理吸附量可达14.2mg/g,水竹炭最大饱和吸附值为14.6mg/g。用Langmuir和Freundlich模型对吸附等温线进行拟合,发现Langmuir模型能更好地反映竹炭对Cr(Ⅵ)的吸附过程特征。
译  名:
Adsorption and Thermodynamic Character of Carbonized Fishscale Bamboo for Cr(Ⅵ)in Aqueous Solution
作  者:
ZHANG Yun;CHEN Jin-fa;YANG Peng;ZHOU Xi-yuan;WANG Yu-xian;TANG Dong;School of Life Science,Sichuan Normal University;Department of Engineering Technology,Xichang College;
关键词:
bamboo charcoal;;absorb;;Cr(VI);;adsorption isotherm equation
摘  要:
The capacity and thermodynamics of carbonized fishscale bamboo for biosortption of Cr6+in aqueous solution is studied.The effects of pH,dosage of carbonized fishscale bamboo,initial concentration of Cr6+,and contact time on the absorptive capacity are measured.Furthermore,the thermodynamic characteristics and mechanism of Cr6+adsorption on carbonized fishscale bamboo are studied.The results show that when pH,the dosage,initial concentration,adsorption temperature and adsorption time is 2,0.6g,135mg/L,25 ℃ and 150 min,respectively,the absorptive capacity reaches full potential of 6.24mg/g.The data of the adsorption by carbonized fishscale bamboo are described with the Langmuir,Freundlich equations.Compared with Langmuir equations,the Freundlich isotherm equation is the optimal one.

相似文章

计量
文章访问数: 6
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊