蒸压改性提高焙烧硅藻土吸附性能研究  

Improvement of Adsorption Performance of Calcined Diatomite by Autoclaved Modification

作　　者：朱会敏 任子杰[1,2,3] 高惠民 管俊芳[1,2] 张安岭[1] 徐龙华[3,4] Zhu Huimin;Ren Zijie;Gao Huimin;Guan Junfang;Zhang Anling;Xu Longhua(School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan,Hubei 430070;Hubei Key Laboratory of Mineral Resources Processing and Environment,Wuhan,Hubei 430070;State Key Laboratory of Environment-friendly Energy Material,Southwest University of Science and Technology,Mianyang,Sichuan 621010;Key Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education,Southwest University of Science and Technology,Mianyang,Sichuan 621010)

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]矿物资源加工与环境湖北省重点实验室,湖北武汉430070 [3]西南科技大学环境友好能源材料国家重点实验室,四川绵阳621010 [4]西南科技大学固体废物处理与资源化教育部重点实验室,四川绵阳621010

出　　处：《非金属矿》2020年第6期83-86,共4页Non-Metallic Mines

基　　金：环境友好能源材料国家重点实验室开放课题项目(18KFHG08)。

摘　　要：采用蒸压法对焙烧硅藻土进行改性,对亚甲基蓝的吸附结果表明,改性后焙烧硅藻土吸附量和比表面积是未改性5.86倍和40.37倍;X射线衍射(XRD)、扫描电镜-能谱分析(SEM-EDS)、Zeta电位测试等表明改性使焙烧硅藻表面形成沸石、硅酸盐等高比表面积物相。最终制得具备高渗透性、高白度、高纯度和高吸附性的硅藻材料,研究成果对促进国内硅藻土资源的高值利用、降低国外优质硅藻土材料的进口依赖具有重大意义。In this paper,the calcined diatomite was modified by the autoclave method,the adsorption capacity of methylene blue and the specific surface area were 5.86 times and 40.37 times of unmodified diatomite.XRD,SEM-EDS and Zeta potential tests showed that the modified diatomite surface formed high specific surface area phases such as zeolite and silicates.Finally,diatomite materials with high permeability,high whiteness,high purity and high adsorption were obtained.The research results are of great significance to promote the high-value utilization of domestic diatomite resources and reduce the import dependence on foreign high-quality diatomite materials.

关 键 词：硅藻土 焙烧 蒸压法 吸附 改性 

分 类 号：TQ424.22[化学工程]