Comparison of bipolar membrane electrodialysis, electrodialysis metathesis, and bipolar membrane electrodialysis multifunction for the conversion of waste Na2SO4: Process performance and economic analysis

被引：0
作者：
Zhu, Ming [1 ,2 ]
He, Feiyu [1 ,3 ]
Feng, Ling [1 ]
Chi, Yongzhi [3 ]
Li, Yu-You [2 ]
Tian, Binghui [1 ]
机构：
[1] Univ Chinese Acad Sci, Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China
[2] Tohoku Univ, Grad Sch Environm Studies, Dept Frontier Sci Adv Environm, 6 6 20 Aoba,Aramaki Aza,Aoba Ku, Sendai, Miyagi 9808579, Japan
[3] Tianjin Chengjian Univ, Sch Environm & Municipal Engn, Tianjin Key Lab Water Qual Sci & Technol, Tianjin 300384, Peoples R China
来源：
JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2024年 / 370卷
关键词：
Waste Na2SO4; Cell configurations; Bipolar membrane electrodialysis (BMED); Electrodialysis metathesis (EDM); Bipolar membrane electrodialysis multifunction (BMEDM); ELECTRO-ELECTRODIALYSIS; DESALINATION; ACID; RECOVERY; WATER; OPTIMIZATION; SEPARATION; SULFATE; LITHIUM; BRINES;
D O I：
10.1016/j.jenvman.2024.122513
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
To convert Na2SO4 into other high-value products (NaOH, H2SO4, and (NH4)(2)SO4), three types of cell configurations of electrodialysis (ED) were applied (three-compartment bipolar membrane ED (BMED), four-compartment ED metathesis (EDM) and five-compartment bipolar membrane ED multifunction (BMEDM)) and parameters such as average voltage variation, removal ratio of salt, product concentration, conversion rate, ion flux, and energy consumption were calculated and compared. The experimental results and calculations indicated that the overall performance of BMEDM was inferior to that of BMED and EDM. An industrial model was established, which indicated that the net profit from converting Na2SO4 using BMEDM was always higher than that from BMED and EDM. Based on the advantages of low investment (132 $) and energy cost (152 $/t Na2SO4), EDM was applicable to factories with a low output of Na2SO4 (production capacity <45%), whereas BMED (157.3 $/t Na2SO4) and BMED-5 (227.6 $/t Na2SO4) were applicable to factories with a high output of Na2SO4 (production capacity >45%) based on high net profits.
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页数：13
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