改性煤渣球的制备及在废水处理中的应用  

Preparation of Modified Coal Cinder Balls and Its Application in Water Treatment

作　　者：李红亚[1,2] 刘侠 白妮[1,2] 王华[1,2] 马亚军[1,2] LI Hong-ya;YAN Biao;LIU Xia;BAI Ni;WANG Hua;MA Ya-jun(School of Chemistry and Chemical Engineering,Yulin University;Shaanxi Key Laboratory of Low Metamorphic Coal Clean Utilization,Yulin 719000,China)

机构地区：[1]榆林学院化学与化工学院,陕西榆林719000 [2]榆林学院陕西省低变质煤洁净利用重点实验室,陕西榆林719000

出　　处：《榆林学院学报》2023年第2期10-13,共4页Journal of Yulin University

基　　金：国家自然科学基金项目(22163012);陕西省教育厅重点实验室项目(20JS158、20JS160)。

摘　　要：针对目前煤气化渣综合利用率低,造成土壤、水体及大气污染的问题,以煤气化渣为原料制备得到煤渣球并用于废水处理。结果表明:原煤渣经过5 mol/L HCl溶液处理后,不仅煤渣中的有害金属含量明显降低,同时煤渣变得更为粗糙,且存在大量微孔,比表面积迅速增大;在负载金属锰后对亚甲基蓝模拟废水进行吸附,吸附量可以达到13.1 mg/g,吸附效果显著;以丁二酸作为交联剂,对聚乙烯醇进行改性得到有机粘合剂,并制备得到煤渣球;以煤渣球作为吸附剂,不仅吸附效果有所改善,而且有利于分离回收再利用,为煤气化渣的资源化开发利用奠定了基础。Given the low comprehensive utilization rate of coal gasification slag which can cause soil,water,and air pollution,in this research,the coal gasification slag was used as raw material to prepare cinder balls and then used for wastewater treatment.The results showed that after the raw coal slag was treated with 5 mol/L HCl solution,not only the content of harmful metals in the slag was significantly reduced,but also the slag became rougher,with a large number of micropores,and the specific surface area increased rapidly.The adsorption of methylene blue simulated wastewater could reach 13.1 mg/g,and the adsorption effect was remarkable.Using succinc acid as a crosslinking agent,the polyvinyl alcohol was modified to obtain an organic binder,and cinder balls were prepared.Using cinder balls as an adsorbent not only improved the adsorption effect,but also facilitated separation and recycling.It has laid the foundation for the resource development and utilization of coal gasification slag.

关 键 词：煤气化渣 煤渣球 废水处理 资源化技术 

分 类 号：TQ536.4[化学工程—煤化学工程]