文献类型：期刊文献

英文题名：Capacitive deionization technology with multi-stage treatment as an efficient desalination process for agricultural irrigation

作者：Huang, Qianhao[1] Du, Fengfeng[1] Liu, Xiaojing[1] Sun, Linhe[1] Tan, Chang[2] Wang, Ao[2] Sun, Kang[2] Li, Bei[2] Yao, Dongrui[1]

第一作者：Huang, Qianhao

通信作者：Yao, DR[1];Li, B[2]

机构：[1]Jiangsu Prov & Chinese Acad Sci, Inst Bot, Jiangsu Key Lab Res & Utilizat Plant Resources, Nanjing 210014, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Peoples R China

年份：2024

卷号：586

外文期刊名：DESALINATION

收录：;EI(收录号：20242316193135);Scopus(收录号：2-s2.0-85194761902);WOS:【SCI-EXPANDED(收录号:WOS:001250058000001)】；

基金：The authors would like to acknowledge the financial support from National Natural Science Foundation of China (52100009) , Jiangsu Forestry Science and Technology Innovation and Extension Fund (LYKJ [2022] 09) and Natural Resources Development Funds of Jiangsu Province (JSZRHYKJ202310) .

语种：英文

外文关键词：Capacitive deionization; Carbon electrode; Brackish water desalination; Agricultural irrigation; Multi -stage treatment

摘要：Novel capacitive deionization (CDI) technology is recognized as a cheap desalination method and holds a promise to be deployed in low-profit fields such as agricultural and municipal works. In this study, the application feasibility of CDI technology in agricultural irrigation is thoroughly investigated. The desalination performance of three operation methods ("low flow rate", "high applied voltage", and "two-stage treatment") are compared for treating artificial brackish water of 2000 mg L-1 to a set desalination target (600 mg L-1). Among these three methods, "two-stage treatment" overwhelms the other two methods regarding several desalination indicators, achieving a decent productivity (1.5 L h-1 m- 2) with a small energy input of 1.4 kWh m- 3. The modified Donnan model indicates that energy dissipation is mitigated in a high flow rate adopted in two-stage treatment, and meantime a high desalination capacity and a good charge efficiency are achieved. In addition, desalinated water with a salt concentration gradient is produced by the CDI module for tomato seedlings irrigation. Compared with the tomato seedlings irrigated by feedwater (2000 mg L-1), the total length and the biomass weight of those irrigated by desalinated water of 300 mg L-1 increase 51.1 % and 119.8 %, respectively. The research accomplishes a proof-of-concept of the agricultural application of CDI technology, and provides reliable data as the foundation for its future practical operation.