摘要
本文以实现先锋高有机质含量硅藻土废弃资源合理利用,提高先锋煤矿区的矿产资源综合利用率的目标出发,以云南先锋褐煤共生的硅藻土尾矿为载体,利用化学共沉淀法,制备磁性硅藻土复合材料。将磁性材料的易分性和硅藻土的吸附性有机结合起来,应用于海洋原油清污处理的实验研究。通过电子扫描显微镜(SEM)、X射线衍射分析(XRD)和X射线荧光分析(XRF)等表征表明,由煤系硅藻土制备的磁性硅藻土是理想的原油清污材料。磁性纳米颗粒:硅藻土为1:5的磁性硅藻土清理油污能力达到91.6%。本文开展的实验研究有利于非金属矿产资源的综合利用,减少原油污染给环境带来的危害。
In order to realize high efficiency utilization of coal-derived diatomite as solid waste resources,the presented study used coalderived diatomite of Yunnan Xianfeng as carrier for preparing magnetic sorbents to clean and treat crude oil from the polluted marine environments.The Co nanoparticles were prepared by chemical co-precipitation method.The magnetic sorbent was further prepared by mixing different ratios of Co nanoparticles and diatomite depending on application environment under magnetic stirring.Characterized by scanning electron microscopy(SEM),Ray diffraction analysis(XRD),and X-ray fluorescence analysis(XRF)and simultaneous thermal analysis(TG/DSC),the experimental results showed that the magnetic diatomite is an ideal material for crude oil cleaning.The optimized ratio of magnetic nanoparticles:diatomite to clean up oil pollution is 1:5 with removal efficiency of 91.6%.In this paper,the experimental study showed a potential comprehensive utilization way of nonmetallic mineral resources for preparing magnetic sorbent for reducing the influence of crude oil pollution to the environment.
作者
孙仕勇
林森
邹翔
郭鹏云
Shiyong SUN;Sen LIN;Xiang ZOU;Pengyun GUO(Key Laboratory of Solid Waste Treatment and Resource Recycle of Ministry of Education,Southwest University of Science and Technology,Mianyang,Sichuan 621010,China;Department of Geological and Mineral Engineering,School of Environment and Resource,Southwest University of Science and Technology,Mianyang,Sichuan 621010,China)
关键词
硅藻土
磁性吸附剂
原油清污
尾矿综合利用
Diatomite
Magnetic sorbent
Crude oil cleaning
Tailing utilization
