林产化学与工业2023，Vol.43Issue(6)：17-24,8.DOI:10.3969/j.issn.0253-2417.2023.06.003
活性炭电极数量对电容去离子系统脱盐性能的影响
Effect of the Number of Activated Carbon Electrodes on the Desalination Performance of Capacitive Deionization
摘要
Abstract
This study constructed capacitive deionization(CDI)systems with different numbers of stacked units,using activated carbon as electrode material without ion exchange membranes.The effects of the number of stacked units on freshwater productivity,salt adsorption capacity and energy efficiency of the CDI system were explored.The results show that CDI systems with 1,2,and 4 pairs of electrodes achieve the total salt removal quantity of 10.11,23.41,and 34.22 mg at the same flow rate,respectively.Furthermore,the average concentration reduction(ΔC)and the thermodynamic energy efficiency(ηTEE)of the CDI systems increase dramatically with the increase of the electrode units:ΔC increased from 2.16 mmol/L to 7.31 mmol/L,and ηTEE increased from 0.66%to 2.17%.In the CDI system with two pairs of electrodes,the charge efficiency and the salt adsorption capacity(QSAC)do not be affected by the flow rate,while the ΔC,energy consumption,and ηTEE of the system all significantly decrease with the increase of the flow rate.In addition,when simultaneously increasing the stacked units and flow rate with the same factor,the total salt removal quantity of the CDI system was 10.11,22.25 and 32.89 mg at the stacked units of 1,2,4,respectively.All of these three systems achieve the average desalination concentration of about 2 mmol/L.Therefore,increasing the number of stacked units can effectively expand the scale of CDI system.关键词
电容去离子/活性炭/苦咸水淡化/工业化放大Key words
capacitive deionization/activated carbon/brackish water desalination/scale up分类
化学化工引用本文复制引用
檀畅,李蓓,呼生春,王傲,张燕萍,孙康..活性炭电极数量对电容去离子系统脱盐性能的影响[J].林产化学与工业,2023,43(6):17-24,8.基金项目
江苏省生物质能源与材料重点实验室重大项目(JSBEM-S-202101) （JSBEM-S-202101）
中国博士后科学基金资助项目(2021M691337) （2021M691337）
