水资源与水工程学报2024，Vol.35Issue(3)：59-66,8.DOI:10.11705/j.issn.1672-643X.2024.03.07
粉煤灰负载纳米FeS处理酸性含铬废水动态试验
Dynamic experiment on treatment of acidic chromium-contaminated wastewater by nano-FeS loaded with fly ash
摘要
Abstract
To address the problem of severe pollution by acidic chromium-contaminated wastewater in mining areas,a novel adsorbent material known as nano-FeS loaded with fly ash(nFeS-F)was pre-pared by the ultrasonic precipitation method.Constructed with fly ash and nFeS-F as fillers,the dynam-ic columns 1#and 2#were employed to conduct dynamic treatment tests on acidic chromium-contaminated wastewater,after which the fly ash and nFeS-F were characterized by XRD,SEM,TEM,and XPS to investigate the regularity,long-term performance and removal mechanism of the fly ash and nFeS-F in treating acidic chromium-contaminated wastewater.The results showed that under the condition of influent Cr(Ⅵ)concentration of 100 mg/L,the average removal rates of Cr(Ⅵ)and total chromium of 1#col-umn were 42.86%and 36.65%,and those of 2#column were 70.74%and 53.12%,respectively,within 28 days of operation of the columns.By the end of the test,the pH of 1#column and 2#column were5.50 and6.38,respectively.According to the XRD and XPS characterization of nFeS-F,Cr(Ⅵ)was reduced to Cr(Ⅲ)and subsequently immobilized on the surface of nFeS-F,manifesting as precipi-tates of hydroxide and sulfide.nFeS-F showed excellent adsorption performance for Cr(Ⅵ)in the test.These findings can provide some technical reference for the treatment of acidic chromium-contaminated wastewater.关键词
粉煤灰/负载/纳米FeS/酸性含铬废水/动态试验Key words
fly ash/load/nano-FeS/acidic chromium-contaminated wastewater/dynamic test分类
资源环境引用本文复制引用
郭旭颖,付宏磊,高新乐,董艳荣,胡志勇,赵子龙,谢周菲..粉煤灰负载纳米FeS处理酸性含铬废水动态试验[J].水资源与水工程学报,2024,35(3):59-66,8.基金项目
国家自然科学基金项目(51304114) （51304114）
国家自然科学基金青年项目(52304188) （52304188）
辽宁省教育厅科学技术研究项目(LJKZ0340、LJKFZ20220199) （LJKZ0340、LJKFZ20220199）
辽宁工程技术大学"双一流"创新团队项目(LNTU20TD-21) （LNTU20TD-21）
辽宁省自然科学基金计划项目(博士科研启动计划)(2023-BS-201) （博士科研启动计划）
