乙炔黑对流动电极电容去离子装置的性能影响研究
Effect of acetylene black on performance of flow electrode capacitive deionization device
杨森 1刘飞 1张杨1
作者信息
- 1. 青岛科技大学环境与安全工程学院,山东 青岛 266042
- 折叠
摘要
流动电极电容去离子技术(FCDI)为连续脱盐问题提供了有效的解决方案.然而,在实际应用过程中,流动电极内碳材料的不连续性对其脱盐性能构成了一定的限制.为了提升FCDI装置电流进而增强其脱盐能力,向流动电极中引入乙炔黑这一低粒径、高导电性的材料.试验结果表明,在流动电极中添加20％的乙炔黑,在0.7 V电压下,其平均盐去除效率相较于未添加乙炔黑的电极显著提升了 127％.此外,当施加1V电压时,含有5％乙炔黑的电极展现出了高达99.7％的电流效率;而在0.7V电压下,其去除氯化钠单位能耗仅为0.33 kW·h/kg.由此可见,乙炔黑在流动电容去离子技术中展现出了广阔的应用前景,为提升脱盐效率与降低能耗提供了可行的途径.
Abstract
Flow electrode capacitive deionization technology(FCDI)presents an effective solution to contin-uous desalination challenges.However,the discontinuity of carbon materials within the flow electrode imposes certain limitations on its desalination performance in practical applications.In order to enhance the current and then improve the desalination capacity of the system,acetylene black,a material characterized by small particle size and high conductivity,was introduced to the flow electrode.The experimental results indicated that,under voltage of 0.7 V,the addition of 20％acetylene black significantly increased the average salt removal efficiency by 127％compared to electrodes without acetylene black.Furthermore,electrodes containing 5％acetylene black demonstrated up to 99.7％current efficiency when a voltage of 1 V was applied;at 0.7 V,its unit energy con-sumption for sodium chloride removal was only 0.33 kW·h/kg.Hence,acetylene black showed broad application prospects in FCDI,offering a viable route to enhance desalination efficiency and reduce energy consumption.
关键词
流动电极/电容去离子/乙炔黑/脱盐/能耗Key words
flow electrode/capacitive deionization/acetylene black/desalination/energy consumption引用本文复制引用
出版年
2024
NETL
NSTL
万方数据