重庆科技大学学报（自然科学版）2024，Vol.26Issue(5)：43-49,7.DOI:10.19406/j.issn.2097-4531.2024.05.007
含磷铁尾矿对废水吸附除铬的实验研究
Experimental Study on Chromium Removal Performance of Wastewater by Phosphorus-Containing Iron Tailings
摘要
Abstract
Waste phosphorus-containing iron tailings are used as adsorbents to treat chromium-containing wastewater.The effects of initial pH,adsorbent addition,initial Cr6+concentration,adsorption time and adsorption temperature on Cr6+removal are investigated using XRD,SEM and other characterization techniques.The Cr6+adsorption mechanism of phosphorus-containing iron tailings is the result of the combined function of physical ad-sorption,electrostatic adsorption and chemical adsorption.The experimental results show that the adsorption rate of Cr6+is above 99%under the optimal experimental conditions that initial pH is 5.0-7.5,initial Cr6+concentration is 40-50 mg/L,adsorbent addition is 20 g/L,adsorbent particle size is less than 0.25 mm,adsorption time is 25 min and adsorption temperature is 25℃,and the adsorption concentration of Cr6+is lower than 0.5 mg/L.关键词
六价铬离子/含磷铁尾矿/吸附/化学吸附Key words
hexavalent chromium ion/phosphorus-containing iron tailings/adsorption/chemical adsorption分类
资源环境引用本文复制引用
周渝飞,袁晓丽,陈茜茜,马生智,赵陈,罗福明..含磷铁尾矿对废水吸附除铬的实验研究[J].重庆科技大学学报（自然科学版）,2024,26(5):43-49,7.基金项目
国家级大学生创新创业训练计划项目"基于硫酸亚铁制备的新生态磁铁矿-针铁矿深度净化处理酸性含铅废水研究"(202311551005) （202311551005）
重庆留学人员回国创新计划项目"低品位表外磷铁矿对矿山酸性含镉废水资源化处理及循环利用研究"(CX2020088) （CX2020088）
重庆市自然科学基金面上项目"低品位磷铁负载壳聚糖对酸性含铜废水的协同吸附除铜效应及调控机制"(CSTB2022NSCQ-MSX0399) （CSTB2022NSCQ-MSX0399）
重庆科技大学科技创新项目"基于含铁废液制备磁铁矿-羟基氧化铁的除铬机理研究"(YKJCX2220220) （YKJCX2220220）
