摘要
为高效处理含重金属Zn^(2+)的酸性矿山废水(AMD),将具有碱性的造纸白泥和具有黏结性和吸附性的膨润土复合,并掺加造孔剂,通过高温焙烧制备新型复合颗粒吸附剂,建立Zn^(2+)的吸附等温式和动力学方程.研究结果表明:复合吸附剂最大碱度释放量为82.9 mg/g(以Ca_(2)CO_(3)计),投加复合吸附剂可使水样的pH值上升.Freundlich等温模型能更好地描述复合吸附剂对Zn^(2+)的吸附,吸附过程更符合准二级动力学方程.
In order to efficiently treat acid mine drainage(AMD)containing heavy metal Zn^(2+),a new type of composite particle adsorbent was prepared by compounding alkaline papermaking white mud and cohesive and absorbent bentonite and adding a pore former to high-temperature roasting,and the adsorption isotherms and kinetic equations for Zn^(2+)were established.The results showed that the maximum alkalinity release of composite adsorbents was 82.9 mg/g(calculated as Ca_(2)CO_(3)),adding composite adsorbent can increase the pH of water sample.The Freundlich isotherm model could better describe the adsorption of Zn^(2+)by composite particles,and the adsorption process was more in line with quasi-second order kinetics equation.
作者
王涛
王丽华
肖利萍
郭悦
WANG Tao;WANG Lihua;XIAO Liping;GUO Yue(College of Environmental Science and Engineering,Liaoning Technical University,Fuxin 123000,China;School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266033,China;School of Civil Engineering,Liaoning Technical University,Fuxin 123000,China)
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2022年第3期234-240,共7页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金(51474122)
山东省自然科学基金(ZR2021ME038)
关键词
废水处理
酸性矿山废水
重金属Zn^(2+)
膨润土
造纸白泥
复合吸附剂
吸附等温式
吸附动力学
wastewater treatment
acid mine drainage
heavy metal Zn^(2+)
bentonite
papermaking white mud
composite particle adsorbent
adsorption isotherms
adsorption kinetics
作者简介
王涛(1996-),男,福建三明人,硕士研究生,主要从事水污染控制与修复及环境功能材料等方面的研究;通信作者:肖利萍(1970-),女,内蒙古乌盟人,博士,教授,主要从事水处理功能材料及矿山废水废渣综合处理等方面的研究.
