Bipolar membrane electrodialysis integrated with in-situ CO_(2)absorption for simulated seawater concentrate utilization,carbon storage and production of sodium carbonate  

作　　者：Jingtao Bi Tianyi Chen Yue Xie Ruochen Shen Bin Li Mengmeng Sun Xiaofu Guo Yingying Zhao 

机构地区：[1]School of Chemical Engineering and Technology,Hebei University of Technology,Tianjin 300401,China [2]Engineering Research Center of Seawater Utilization Technology of Ministry of Education,School of Chemical Engineering and Technology,Hebei University of Technology,Tianjin 300401,China [3]Hebei Collaborative Innovation Center of Modern Marine Chemical Technology,Tianjin 300401,China [4]Tianjin Key Laboratory of Chemical Process Safety,Tianjin 300130,China [5]Shandong Technology Innovation Center of Seawater and Brine Efficient Utilization,Weifang 262737,China

出　　处：《Journal of Environmental Sciences》2024年第8期21-32,共12页环境科学学报（英文版）

基　　金：supported by the Central Guidance on Local Science and Technology Development Fund of Hebei Province(No.226Z3102G);the Fundamental Research Funds of Hebei University of Technology(No.JBKYTD2001);the Science Research Project of Hebei Education Department(No.QN2022089)。

摘　　要：In the context of carbon capture,utilization,and storage,the high-value utilization of carbon storage presents a significant challenge.To address this challenge,this study employed the bipolar membrane electrodialysis integrated with carbon utilization technology to prepare Na_(2)CO_(3)products using simulated seawater concentrate,achieving simultaneous saline wastewater utilization,carbon storage and high-value production of Na_(2)CO_(3).The effects of various factors,including concentration of simulated seawater concentrate,current density,CO_(2)aeration rate,and circulating flow rate of alkali chamber,on the quality of Na_(2)CO_(3)product,carbon sequestration rate,and energy consumption were investigated.Under the optimal condition,the CO_(3)^(2-)concentration in the alkaline chamber reached a maximum of 0.817 mol/L with 98 mol%purity.The resulting carbon fixation rate was 70.50%,with energy consumption for carbon sequestration and product production of 5.7 k Whr/m^(3)CO_(2)and1237.8 k Whr/ton Na_(2)CO_(3),respectively.This coupling design provides a triple-win outcome promoting waste reduction and efficient utilization of resources.

关 键 词：Bipolar membrane electrodialysis(BMED) Carbon capture Utilization and storage(CCUS) Seawater concentrate Sodium carbonate 

分 类 号：X701[环境科学与工程—环境工程] TQ131.12[化学工程—无机化工]