CIESC Journal ›› 2019, Vol. 70 ›› Issue (12): 4804-4810.DOI: 10.11949/0438-1157.20190643

• Energy and environmental engineering • Previous Articles     Next Articles

Effect of Cu2+ concentration in cathode on power generation and copper removal of thermally regenerative ammonia-based battery

Zhiqiang TANG1,2(),Liang ZHANG1,2(),Xun ZHU1,2,Jun LI1,2,Qian FU1,2,Qiang LIAO1,2   

  1. 1. Key Laboratory of Low-grade Energy Utilization Technologies and Systems (Chongqing University), Ministry of Education, Chongqing 400030, China
    2. Institute of Engineering Thermophysics, Chongqing University, Chongqing 400030, China
  • Received:2019-06-10 Revised:2019-09-02 Online:2019-12-05 Published:2019-12-05
  • Contact: Liang ZHANG

不同Cu2+浓度下热再生氨电池产电及Cu2+去除特性

唐志强1,2(),张亮1,2(),朱恂1,2,李俊1,2,付乾1,2,廖强1,2   

  1. 1. 低品位能源利用技术及系统教育部重点实验室,重庆 400030
    2. 重庆大学工程热物理研究所,重庆 400030
  • 通讯作者: 张亮
  • 作者简介:唐志强(1995—),男,硕士研究生,Zhiqiang9508@cqu.edu.cn
  • 基金资助:
    国家自然科学基金青年项目(51606022);重庆市基础科学与前沿技术项目(cstc2017jcyjAX0203);重庆市留学人员创业创新支持计划创新资助重点项目(cx2017020);中央高校基本科研业务费(10611 2016CDJXY 145504);低品位能源利用技术及系统教育部重点实验室固定人员科研基金资助(LLEUTS-2018005)

Abstract:

The thermally regenerative ammonia-based battery (TRAB) exhibits unique advantages and good application prospects in the recycling of waste resources. By constructing TRAB to treat Cu2+-containing waste liquid and recovering electric energy and copper resources, the effects of different Cu2+ concentrations on battery power generation performance and Cu2+ removal of waste liquid were studied. The results showed that, with the increasing Cu2+ concentration less than 0.2 mol/L, the maximal power, the total charge, and the energy density and copper removal rate increased during the discharging. A very-low final concentration and a high removal rate of Cu2+ indicated that TRAB is feasible for the treatment of waste water containing Cu2+. The two-step treatment method using TRAB combined with electrocoagulation method in the follow-up study is expected to further improve the treatment effect, and has good economic and application prospects.

Key words: thermally regenerative ammonia-based battery, Cu2+ concentration, maximal power, copper removal rate, electrochemistry, waste water, recovery

摘要:

热再生氨电池(thermally regenerative ammonia-based battery,TRAB)在废弃资源回收方面展现出独特优势和良好应用前景。通过构建TRAB来处理含Cu2+废液并回收电能和铜资源,实验中研究了不同Cu2+浓度对电池产电性能和废液Cu2+去除效果的影响。研究结果表明,当阴极废液Cu2+浓度低于0.2 mol/L时,随着Cu2+浓度的增加,电池最大输出功率不断增加,电池输出电压和产电周期不断增加,促使批次获得电量和能量密度也不断增加。同时采用TRAB技术去除废液中铜离子具有较高的去除效率,而且去除率随着废液中铜离子浓度的增加而增加。后续研究采用TRAB结合电凝法的两步处理法有望进一步提高处理效果,具有较好的经济性和应用前景。

关键词: 热再生氨电池, 铜离子浓度, 最大功率, 铜离子去除率, 电化学, 废水, 回收

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