不同Cu2+浓度下热再生氨电池产电及Cu2+去除特性

doi:10.11949/0438-1157.20190643

化工学报 ›› 2019, Vol. 70 ›› Issue (12): 4804-4810.DOI: 10.11949/0438-1157.20190643

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. 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

收稿日期:2019-06-10 修回日期:2019-09-02 出版日期:2019-12-05 发布日期:2019-12-05
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)

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

Zhiqiang TANG^1,²(),Liang ZHANG^1,²(),Xun ZHU^1,²,Jun LI^1,²,Qian FU^1,²,Qiang LIAO^1,²

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

摘要/Abstract

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

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

中图分类号:

X 703.1

唐志强, 张亮, 朱恂, 李俊, 付乾, 廖强. 不同Cu²⁺浓度下热再生氨电池产电及Cu²⁺去除特性[J]. 化工学报, 2019, 70(12): 4804-4810.

Zhiqiang TANG, Liang ZHANG, Xun ZHU, Jun LI, Qian FU, Qiang LIAO. Effect of Cu²⁺concentration in cathode on power generation and copper removal of thermally regenerative ammonia-based battery[J]. CIESC Journal, 2019, 70(12): 4804-4810.

图/表 6

图1 电池结构及反应原理

Fig.1 Battery structure and reaction schematic

图2 电镀废液中铜离子浓度对最大功率密度的影响

Fig.2 Effect of Cu2+ concentration in cathode on the maximal power density

图3 电镀废液中铜离子浓度对电池周期产电(a)，电量和能量密度(b)的影响

Fig.3 Effect of Cu2+ concentration in cathode on electricity generation (a), total charge and energy density (b)

图4 电镀废液中铜离子浓度对电池阴极、阳极库仑效率的影响

Fig.4 Effect of Cu2+ concentration in cathode on cathodic and anodic Coulombic efficiency

图5 电镀废液中铜离子浓度对铜离子去除率的影响

Fig.5 Effect of Cu2+ concentration in cathode on copper removal rate

图6 TRAB结合电凝法处理含铜电镀废水示意图

Fig.6 Schematic of TRAB combined with electrocoagulation for treatment of copper-containing electroplating wastewater

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不同Cu²⁺浓度下热再生氨电池产电及Cu²⁺去除特性

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

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