化工环保2012，Vol.32Issue(1)：70-74,5.
超细粉煤灰对模拟废水中孔雀石绿的吸附性能
Adsorption Capability of Ultrafine Fly Ash to Malachite Green in Simulated Wastewater
摘要
Abstract
The ultrafine fly ash (UFA) prepared by ball-milling was used as adsorption material, and its adsorption capability to malachite green (MG) in the simulated wastewater was studied by shaking adsorption method. The experimental results show that; Under the conditions of UFA dosage 10 g/Lt adsorption temperature 298 K, initial MG mass concentration 500 mg/L, shaking time 120 min and natural pH of wastewater, the equilibrium adsorption capacity can reach 49.97 mg/g and almost all MG is adsorbed on UFA; The adsorption process of MG on UFA fits well with the second-order adsorption kinetic equation with 3.95 kJ/mol of Ea; The adsorption rate is fast and controlled by intra-particle diffusion of MG in UFA; The adsorption process accords with Langmuir isotherm equation, and the saturated adsorption capacity decreases with the increasing of adsorption temperature and can reach 526.32 mg/g at 298 K; The adsorption process is a spontaneous and exothermic reaction process.关键词
超细粉煤灰/吸附/孔雀石绿/废水处理Key words
ultrafine fly ash/ adsorption/ malachite green/ wastewater treatment分类
资源环境引用本文复制引用
李北罡,乔丽萍..超细粉煤灰对模拟废水中孔雀石绿的吸附性能[J].化工环保,2012,32(1):70-74,5.基金项目
国家自然科学基金资助项目(21167011) （21167011）
内蒙古自治区自然科学基金资助项目(2011MS0213) （2011MS0213）
内蒙古自治区高等学校科学技术研究项目(NJ10048). （NJ10048）
