泥岩-水淬渣复合吸附材料对Cu2+的吸附特性研究  

Study on Adsorption Characteristics of Cu2+ by Mudstone-Blast Furnace Slag Adsorbent

作　　者：李苗苗[1,2] 殷志祥[1] 路沙沙[1] 孙乾予[3] Li Miaomiao;Yin Zhixiang;Lu Shasha;Sun Qianyu(College of Civil Engineering,Liaoning Technical University,Fuxin,Liaoning 123000;Department of Highway and Construction Engineering,Fuxin Higher Training College,Fuxin,Liaoning 123000;School of Environment,Tsinghua University,Beijing 100084)

机构地区：[1]辽宁工程技术大学土木工程学院,辽宁阜新123000 [2]阜新高等专科学校公路与建筑工程系,辽宁阜新123000 [3]清华大学环境学院,北京100084

出　　处：《非金属矿》2020年第1期94-98,共5页Non-Metallic Mines

摘　　要：以富含高岭石和伊利石的泥岩为原料与水淬渣协同利用,制备一种Cu2+的吸附材料。通过吸附试验研究泥岩土与水淬渣的混合比例、pH值范围、材料用量、吸附时间等条件。采用3种动力学方程拟合分析,得到准二阶动力学方程更好地表述吸附过程。通过吸附等温曲线试验确定吸附模型属于Langmuir模型,确定最大单位吸附量约为11.5 mg/g。最后采用扫描电镜和显微CT分析对泥岩-水渣吸附材料的表面和内部结构进行分析,并解释吸附材料对溶液中的Cu2+有很好吸附效果的原因。Synergetic utilization of shale rich in kaolinite and illite with blast furnace slag,a kind of Cu2+ adsorption material was prepared by using mudstone and blast furnace slag.The suitable mixing ratio,pH value range,material amount and adsorption time of mudstone and blast furnace slag were studied by adsorption test.Three kinds of kinetic equations are used to fit,and the pseudo second order dynamic equation is obtained to better describe the adsorption process.According to the adsorption isotherm curve test,it belongs to langmuir adsorption model,and the maximum unit adsorption capacity is 11.5 mg/g.At last,the surface and internal structure of the adsorption material were analyzed by SEM and micro-CT,and the reason why the adsorption material has a good adsorption effect on Cu2+ in the solution was explained.

关 键 词：泥岩-水淬渣 吸附量 吸附方程 特征结构 

分 类 号：X75[环境科学与工程—环境工程]