摘要
用腐殖酸包覆磁性四氧化三铁纳米材料吸附饮用水中的六价铬离子。结果表明,最佳吸附条件为:腐殖酸包覆四氧化三铁质量比为1∶1,反应温度90℃,分散剂与去离子水的比例为1∶5,反应时间60 min,Fe_3O_4/HA对Cr(Ⅵ)的吸附时间为30 min。在最佳条件下,Fe_3O_4/HA对Cr(Ⅵ)吸附量为25.83 mg/g,氨水(25%~28%)用量为10 m L;Fe_3O_4/HA对Cr(Ⅵ)的吸附符合Freundlich吸附等温方程。
Choosing humic acid-coated magnetic iron tetrachloride nanomaterials to adsorb hexavalent chromium ions in drinking water.The results showed that the optimum adsorption condition was:the ratio of humic acid coated iron oxide was 1∶1,the reaction temperature was 90℃,the ratio of dispersant to deionized water was 1∶5,the reaction time was 60 min,Fe3O4/HA was saturated for 30 min.The adsorbed equilibrium of Cr(VI)is 25.83 mg/g and the optimum amount of ammonia(25%~28%)is 10 mL.The adsorption Fe3O4/HA to Cr(VI)is in accordance with Freundlich adsorption isotherm.
作者
王侨
秦正山
王锐
张小敏
邱会东
WANG Qiao;QIN Zheng-shan;WANG Rui;ZHANG Xiao-min;QIU Hui-dong(Department of Chemistry and Chemical Engineering,Chongqing University of Science and Technology,Chongqing 401331,China)
出处
《应用化工》
CAS
CSCD
北大核心
2018年第8期1710-1714,共5页
Applied Chemical Industry
基金
重庆市教育委员会科学技术研究项目(KJ1601334)
重庆科技学院校内基金(CK2016Z12)
关键词
饮用水
六价铬
四氧化三铁
腐殖酸
吸附量
drinking water
hexavalent chromium
ferroferric oxide
humic acid
adsorption
