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Ammonia Recovery from Wastewater as a Fuel: Effects of Supporting Electrolyte on Ammonium Permeation through a Cation-Exchange Membrane

文献类型：期刊论文

作者Xu, Linji1; Liu, Dingyang2; Liu, Wenzong3; Yang, Jixiang4; Huang, Jiansheng5; Wang, Xinzhu2; He, Qiang1
刊名ACS OMEGA
出版日期2022-06-07
卷号7期号:24页码:20634-20643
ISSN号2470-1343
DOI10.1021/acsomega.2c00700
通讯作者Wang, Xinzhu(wxz@cqu.edu.cn)
英文摘要Electrodeionization (EDI) is used to recover ammonia from wastewater as a fuel, but how its performance for ammonia recovery is affected by the supporting electrolyte is not very clear. This study involved experimental tests and theoretical calculations on NH3 recovery, NH4+ permeation, and NH4+ and Na+ interacting with the functional groups in a cation exchange membrane (CEM) using Na2SO4 as the supporting electrolyte. The results demonstrated that a low concentration (<= 0.250 mol L-1 of Na2SO4) was conducive to NH4+ permeation, while the a concentration (0.750 mol L-1 of Na2SO4) hindered NH4+ permeation. A maximum recovery efficiency of ammonia of 80.00%, a current efficiency of 70.10%, and an energy balance ratio of 0.66 were obtained at 0.250 mol L-1 of Na2SO4. Numerical results indicated that an increase in Na2SO4 concentration caused severe concentration polarization that resisted NH4+ migration in the CEM. The DFT results demonstrated that competitive adsorption of Na+ to the CEM hindered NH4+ migration. The weaker interacting force between NH4+ and the sulfonate functional group (-SOH3) in comparison to that between Na+ and -SOH3 might be related to the geometric and orientation effects, which generated an additional energy barrier for NH4+ transport. Therefore, this study suggests that the supporting electrolyte concentration should be matched with that of the desalted ions.
资助项目National Natural Science Foundation of China[U20A20326] ; Science Foundation of the National Key Laboratory of Science and Technology on Advanced Composites in Special Environments[6142905202711] ; State Key Laboratory for the Modification of Chemical Fibers and Polymer Materials[KF2119] ; Venture & Innovation Support Program for Chongqing Overseas Returnees[cx2020001]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000815712000001
出版者AMER CHEMICAL SOC
源URL[http://119.78.100.138/handle/2HOD01W0/15921]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Wang, Xinzhu
作者单位1.Chongqing Univ, Fac Environm & Ecol, Chongqing 400044, Peoples R China
2.Chongqing Univ, Chongqing Key Lab Heterogeneous Mat Mech, Coll Aerosp Engn, Chongqing 400040, Peoples R China
3.Harbin Inst Technol Shenzhen, Sch Civil & Environm Engn, Shenzhen 518055, Peoples R China
4.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Aquat Environm, Chongqing 401174, Peoples R China
5.Chongqing Univ Sci & Technol, Sch Chem & Chem Engn, Chongqing 401331, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Linji,Liu, Dingyang,Liu, Wenzong,et al. Ammonia Recovery from Wastewater as a Fuel: Effects of Supporting Electrolyte on Ammonium Permeation through a Cation-Exchange Membrane[J]. ACS OMEGA,2022,7(24):20634-20643.
APA Xu, Linji.,Liu, Dingyang.,Liu, Wenzong.,Yang, Jixiang.,Huang, Jiansheng.,...&He, Qiang.(2022).Ammonia Recovery from Wastewater as a Fuel: Effects of Supporting Electrolyte on Ammonium Permeation through a Cation-Exchange Membrane.ACS OMEGA,7(24),20634-20643.
MLA Xu, Linji,et al."Ammonia Recovery from Wastewater as a Fuel: Effects of Supporting Electrolyte on Ammonium Permeation through a Cation-Exchange Membrane".ACS OMEGA 7.24(2022):20634-20643.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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