摘要
选取凹凸棒土、水滑石、硅藻土三种典型矿物材料作为研究对象,利用单因素实验方法吸附时间、酸碱度等因素对水中磷的吸附影响规律,其结果表明:天然水滑石、凹凸棒土、硅藻土对含磷废水中磷的最佳吸附pH为4.0~5.0,吸附平衡时间为40 min;对比酸改性、热改性以及AlCl3改性前后三种矿物材料的磷吸附性能,总体上呈现酸改性>热改性>AlCl3改性的趋势,对磷的最佳去除率达到99%以上。
Three typical mineral materials including attapulgite,hydrotalcite and diatomaceous earth were selected as research objects.The effect of adsorption time and pH on the adsorption was investigated by single factor experiment.The results showed that suitable pH for adsorbing phosphorus in phosphorus-containing wastewater was 4.0~5.0,and the adsorption equilibrium time was 40 min.The phosphorus adsorption performances of the three mineral materials before and after acid modification,thermal modification and AlCl3 modification were compared.The results showed that,the modification effect order was as follows:acid modification>thermal modification>AlCl3 modification.The best removal rate of phosphorus was more than 99%.
作者
寇明月
刘文静
傅玲子
刘叶
张海涛
KOU Ming-yue;LIU Wen-jing;FU Ling-zi;LIU Ye;ZHANG Hai-tao(Shengli College,China University Petroleum,Dongying Shandong 257061,China)
出处
《当代化工》
CAS
2020年第7期1347-1350,1355,共5页
Contemporary Chemical Industry
基金
中国石油大学胜利学院化学工程学院科技计划项目(项目编号:HYKY201901)
关键词
矿物材料
除磷
吸附
Mineral materials
Phosphorus removal
Adsorption
