单价选择性电渗析回收铅酸蓄电池拆解废酸试验
Experiment of Monovalent Selective Electrodialysis for Recovery of Waste Acid from Disassembled Lead-Acid Batteries
徐守疆 1刘咏 2李国才 1张传亮 1邵天宝 3吴英震3
作者信息
- 1. 泉州市海丝节水科技有限公司,福建泉州 362000
- 2. 天津市生态环境科学研究院,天津 300191
- 3. 自然资源部天津海水淡化与综合利用研究所,天津 300192
- 折叠
摘要
研究针对北方某铅酸蓄电池回收厂拆解废铅酸蓄电池车间的拆解废酸进行单价选择性电渗析回收试验,并考察了操作电流密度、电压及流量对单价选择性电渗析工艺的影响,以期为铅酸蓄电池回收工业清洁生产提供技术支撑.在电压为5 V,电流密度为20 mA/cm2,进水流量为150 L/h,电渗析装置运行时间为48 min的条件下,回收室中H+透过率可达到80％,单价选择性电渗析对H+有较高透过率.同时,单价选择性电渗析对金属离子保持较低的泄漏率,Pb2+泄漏率为0.6％,Zn2+泄漏率为2.8％,Cd2+泄漏率为1.8％.研究实现了对废铅酸蓄电池拆解废酸中H+与重金属离子的选择性分离的目标.
Abstract
In order to provide technical support for the clean production of lead-acid battery recycling industry,this study investigated the effects of current density,voltage and flow rate on the single-unit selective electrodialysis process of a lead-acid battery recycling plant in northern China.Under the conditions of voltage of 5 V,current density of 20 mA/cm2,influent flow rate of 150 L/h and operation time of electrodialysis unit of 48 min,the H+transmittance in the recovery chamber could reach 80％,and the unit price selective electrodialysis had a higher transmittance to H+.At the same time,univalent selective electrodialysis maintained a low leakage rate for metal ions,with Pb2+leakage rate of 0.6％,Zn2+leakage rate of 2.8％,and Cd2+leakage rate of 1.8％.In this study,the objective of selective separation of H+from heavy metal ions in waste acid disassembly of lead-acid batteries was achieved.
关键词
单价选择性电渗析/铅酸蓄电池/废硫酸/酸性重金属废水/酸回收/选择性分离Key words
monovalent selective electrodialysis/lead-acid battery/waste sulfuric acid/acid heavy metal wastewater/acid recycling/selective separation引用本文复制引用
基金项目
国家重点研发计划(2023YFEO101000)
出版年
2024
国家科技期刊平台
NSTL
万方数据