摘要
以棉花秸秆为前体材料,采用浸渍法负载纳米铁制备载铁棉花秸秆吸附材料,通过动力学和热力学吸附过程考察棉花秸秆负载纳米铁材料对磷的吸附。结果表明:棉花秸秆负载纳米铁以后吸附性能显著优于原始材料,pH为4.00~7.00均可用于含磷废水的去除。棉花秸秆负载纳米铁材料对磷的吸附为吸热过程,吸附在12 h后逐渐达到平衡,其对磷的动力学吸附更符合准二级动力学模型。棉花秸秆负载纳米铁材料对磷的吸附再生在3个循环以后趋于稳定,具有良好的应用前景。
This paper used cotton straw as the precursor material to prepare cotton straw with nano-sized iron by impregnation method,and investigated the adsorption of nano-iron-loaded cotton straw on phosphorus by kinetic and thermodynamic adsorption processes.The adsorption ability of cotton straw loaded with nano-iron was better than that of the original material significantly,and it can be used to remove phosphorus-containing wastewater under the pH value of 4.00~7.00.The adsorption of phosphorus by nano-iron-loaded cotton straw was an endothermic process,and the adsorption reached an equilibrium after 12 h gradually.The kinetic adsorption of phosphorus by nano-iron-loaded cotton straw was more in line with the pseudo-second-order kinetic model.The adsorption and regeneration of phosphorus by nano-iron-loaded cotton straw tended to be stable after three cycles.It has good prospect of application.
作者
邓正像
陈滔
吴继泽
葛广华
Deng Zhengxiang;Chen Tao;Wu Jize;Ge Guanghua(College of Water Conservancy and Architecture Engineering,Tarim University,Alar 843300,China)
出处
《广东化工》
CAS
2020年第10期11-13,共3页
Guangdong Chemical Industry
基金
塔里木大学大学生创新创业训练计划项目(2017057)。
关键词
棉花秸秆
磷
吸附
再生
cotton straw
phosphorus
adsorption
regeneration
