摘要
研究了皂土对CuSO_4的吸附性能,考察了溶液初始pH、无机电解质NaCl、MgCl_2和AlCl_3及乙二胺四乙酸(EDTA)和柠檬酸等因素对皂土吸附量的影响。实验结果表明:皂土对CuSO_4有很强的吸附能力;其吸附动力学曲线和吸附等温线分别符合准二级反应速率方程和Langmuir方程;饱和吸附量达29.85 mg/g;随溶液初始pH增大,吸附量增大;无机电解质NaCl、MgCl_2和AlCl_3以及EDTA和柠檬酸均可以抑制CuSO_4在皂土上的吸附。
The adsorption capability of bentonite to CuSO4 was studied. The factors affecting the adsorption quantity on bentonite were investigated, such as: initial solution pH, inorganic electrolytes (NaCl, MgCl2 and AlCl3 ), ethylenediamine tetraacetic acid (EDTA) and citric acid. The experimental results show that: The adsorption capability of bentonite to CuSO4 is strong; The adsorption kinetics curve and isotherm accord respectively with the quasi-second order reaction rate equation and Langmuir equation; The saturation adsorption quantity is 29.85 rag/g; The adsorption quantity increases with the increase of the initial solution pH; The addition of inorganic electrolytes ( NaCl, MgCl2 and AlCl3 ) and EDTA and citric acid can inhibit the adsorption of CuSQ on bentonite.
出处
《化工环保》
CAS
CSCD
北大核心
2010年第6期469-472,共4页
Environmental Protection of Chemical Industry
基金
国家重大基础研究发展计划(973计划)项目(2004CB418504)
国家自然科学基金资助项目(20573065)
河南省教育厅自然科学研究计划项目(2010B150021)
关键词
皂土
硫酸铜
吸附
bentonite
copper sulphate
adsorption