不锈钢酸洗废水中Cr^+6离子的解吸附研究  

The Study on Desorption of Cr^+6 Ion in Stainless Steel Pickling Wastewater

作　　者：高伟伟 赵明星[2] 杜丹 GAO Wei-wei;ZHAO Ming-xing;DU Dan(Huzhou Gaolin Stainless Steel Tube Manufacture Co.,Ltd,Huzhou 313000,China;School of Life Science,Huzhou Teachers College,Huzhou 313000,China)

机构地区：[1]湖州高林不锈钢管制造有限公司,浙江湖州313000 [2]湖州师范学院生命科学学院,浙江湖州313000

出　　处：《湖州职业技术学院学报》2020年第1期66-69,共4页Journal of Huzhou Vocational and Technological College

基　　金：2019年度湖州师范学院校企合作项目“不锈钢管质量改进、酸洗和废液处理工艺的研究”(20193305010000156K)的研究成果之一。

摘　　要：本实验以竹粉/膨润土尾矿复合陶粒作为吸附剂,对Cr^+6离子进行吸附。采用NaOH解吸附剂对Cr^+6离子进行解吸附实验,用以分析解吸附浓度、时间和次数对解吸附的影响;并用不锈钢酸洗废水(以下简称废水)进行验证实验。结果表明:以NaOH为解吸附剂时,浓度对解吸附整体影响不大,浓度为0.3 mol/L时最佳;解吸附时间为6h时,复合陶粒再吸附率最高;复合陶粒循环利用次数可达5次,说明使用NaOH为解吸附剂对复合陶粒有较好的解吸附效果。Bamboo powder/bentonite tailings composite ceramsite was used as adsorbent to adsorb Cr^+6 ions in this experiment.The effects of NaOH on desorption of Cr^+6 ion were studied.The effects of concentration,time and times on desorption were investigated.The results showed that the concentration of NaOH had little effect on the desorption,and 0.3 mol/L was the best concentration.After desorption of Cr^+6 ion was carried in 6 hours,the ceramsite had the highest readsorption rate,and the recycling times of ceramsite could reach 5 times,indicating that NaOH as the adsorbent could have a better desorption on this system.

关 键 词：不锈钢酸洗废水 解吸附 Cr^+6离子 复合陶粒 吸附 

分 类 号：X703[环境科学与工程—环境工程]