文献类型：期刊文献

英文题名：Electro-confinement membrane desalination by nanoporous carbon membrane

作者：Ma, Jing[1];Qin, Guotong[1];Wei, Wei[2];Xiao, Tianliang[3];Jiang, Lei[3];Liu, Shaomin[4,5]

第一作者：Ma, Jing

通讯作者：Qin, GT[1]

机构：[1]Beihang Univ, Sch Space & Environm, 9,Shahe Gaojiaoyuan South 3rd St, Beijing 102206, Peoples R China;[2]Beijing Union Univ, Coll Biochem Engn, 18 Sanqu, Beijing 100023, Peoples R China;[3]Beihang Univ, Minist Educ, Key Lab Bioinspired Smart Interfacial Sci & Techn, Sch Chem, 37 Xueyuan Rd, Beijing 100191, Peoples R China;[4]Curtin Univ, Dept Chem Engn, Perth, WA 6845, Australia;[5]Beijing Univ Chem Technol, Coll Chem Engn, Beijing 100029, Peoples R China

第一机构：Beihang Univ, Sch Space & Environm, 9,Shahe Gaojiaoyuan South 3rd St, Beijing 102206, Peoples R China

通讯机构：[1]corresponding author), Beihang Univ, Sch Space & Environm, 9,Shahe Gaojiaoyuan South 3rd St, Beijing 102206, Peoples R China.

年份：2020

卷号：476

外文期刊名：DESALINATION

收录：;EI(收录号：20194807758608);Scopus(收录号：2-s2.0-85075546790);WOS:【SCI-EXPANDED(收录号:WOS:000508744900020)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant No. 51678019, 51772031).

语种：英文

外文关键词：Electra-confinement; Desalination; Carbon membrane; Nanochannels; Energy barriers

摘要：In this work, we reported a novel desalination method, electro-confinement desalination (ECMD), combining electric field and confinement effects using nanofiltration carbon membranes (CM) as the electrode. The ECMD method showed high ions rejection and high energy efficiency. It was found that the optimum potential for rejection of SO42- was -0.4 V (SCE), a steady rejection of 94.89% for SO42- being achieved in the cathode chamber when the feed concentration of Na2SO4 was 500 mg L-1 in water. To remove Na+, we set CM anode chamber to treat the effluent water from the cathode chamber. The rejection of SO42- and Na+ reached 100% and 88.86%, respectively. Besides the high removal of ions, the energy consumption was as low as 1.90 x 10(-2) KWh m(-3). The application of nanoporous CM and electric field made the desalination process concern adsorption desalination (AD), capacitive deionization (CDI) and electric enhanced confinement membrane desalination (CMD). To understand the contribution of the AD, CDI and CMD to desalination, a series of experiments were conducted. It was found that SO42- removal could be achieved 38.62% by AD, 18.50% by CDI and 80.99% by CMD, respectively. This result suggests that high desalination efficiency was stemmed from multi-effects but mainly from electro-confinement.