摘要
基于我国煤泥当前综合利用现状与煤矿集聚区地下水体污染治理的迫切需求,以煤泥(CS)为原料,添加不同质量的CaCl_(2)作为活化剂,采用混合绝氧煅烧的方式制备了不同配比的煤泥基复合催化材料,利用X射线衍射(XRD)、扫描电镜(SEM)、比表面积测试(BET)、红外光谱(FT-IR)、X射线光电子能谱(XPS)、拉曼光谱等手段对其进行表征,并研究其用于活化过一硫酸氢钾复合盐(PMS)和催化降解水中苯酚的性能。结果表明:CaCl_(2)-热处理煤泥制得的催化材料能高效活化PMS和降解苯酚;当煤泥与CaCl_(2)质量比为4∶3时所制备的复合材料应用效能最优,苯酚降解率可达100%;降解体系中活性物种^(1)O_(2)起主要作用;催化材料pH值适用范围(3.0~11.0)较广,且水体中各种阴离子对苯酚降解的影响较为有限,展现出良好的应用前景。
Based on the current situation of comprehensive utilization of coal slime in China and the urgent need for water pollution control in coal mining areas,this paper uses coal slime(CS)as raw material and CaCl_(2)as the activator,different proportions of coal slime-based catalytic materials were prepared under anaerobic calcination,which were characterized by XRD,SEM,BET,FT-IR,XPS,Raman spectroscopy,etc.This study investigated its ability to activate peroxymonosulfate(PMS)for the catalytic degradation of phenol in wastewater.Results show that the catalytic material prepared by CaCl_(2)-heat treated coal slime can effectively activate PMS to achieve the highly efficient degradation of phenol.In addition,when the mass ratio of coal slime and CaCl_(2)reach 4∶3,it shows the optimal degradation performance,whose degradation rate of phenol can reach 100%.The active species^(1)O_(2)played a major role in the degradation system.Moreover,the catalytic materials could be applied in a wide pH range(3.0~11.0),and the influence of various anions in water on the degradation of phenol is relatively limited,indicating their good application prospect in wastewater treatment.
作者
王奇洲
李春全
殷帅军
孙志明
Wang Qizhou;Li Chunquan;Yin Shuaijun;Sun Zhiming(School of Chemical and Environmental Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China)
出处
《矿业科学学报》
CSCD
2023年第1期127-136,共10页
Journal of Mining Science and Technology
基金
国家重点研发计划(2020YFC1806504)
中央高校基本科研业务费专项资金(2021JCCXHH04)。
关键词
煤泥
氯化钙
过硫酸盐活化
苯酚
水处理
coal slime
CaCl_(2)
persulfate activation
phenol
wastewater treatment
