摘要
分析研究了粉煤灰对模拟酸性矿井水中Cd2+的吸附.实验中选取Cd2+的初始浓度为0.000 1~0.010 0 mol/L.结果表明,粉煤灰对Cd2+的吸附符合Freundlich型吸附等温式,吸附反应符合一级反应动力学特征.在不同温度下得到了速率常数方程,表观活化能Ea=28.95 kJ/mol,指前因子A=68.9 min-1.
Studied the Cd^2＋ adsorption of fly ash in simulated acidic mine water. The initial concentration of Cd^2＋ ranged from 0. 000 1 to 0. 010 0 mol/L, and the experimental results show that the adsorption of Cd^2＋ with fly ash is consistent with an adsorption isotherm of the Freundlich type equation. Such an adsorption reaction confirms the first-order reaction kinetics. The rate constant equation and apparent activation energy Ea = 28.95 kJ/mol, the preexponential factor A = 68. 9 min^- 1 may be obtained for different temperatures.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2007年第11期1183-1186,共4页
Journal of China Coal Society
基金
国家自然科学基金资助项目(50374001)
安徽省科技厅重点科研计划资助项目(04023047)
