文献类型：期刊文献

英文题名：Membrane process design for biohydrogen purification with simultaneous CO2 capture: Feasibility and techno-economic assessment

作者：Xu, Wenqi[1];Lindbrathen, Arne[1];Janakiram, Saravanan[2];Ansaloni, Luca[2];Lei, Linfeng[3];Deng, Liyuan[1]

机构：[1]Norwegian Univ Sci & Technol NTNU, Dept Chem Engn, NO-7491 Trondheim, Norway;[2]SINTEF Ind, Dept Sustainable Energy Technol, N-0373 Oslo, Norway;[3]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2023

卷号：282

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20233714708311);WOS:【SCI-EXPANDED(收录号:WOS:001077096900001)】；

基金：This work is part of the FaT H2 project supported by the Research Council of Norway (No. 294533) .

语种：英文

外文关键词：Membrane process; Dark fermentative biohydrogen; Hydrogen purification: CO2 capture; Techno-economic assessment

摘要：In this work, a membrane separation process is designed and optimized to purify dark fermentative biohydrogen by removing CO2. A CO2-selective PVAm-based nanocomposite membrane was selected considering its high CO2/ H-2 separation performance and unique features suitable for the process. We tested the membrane performances under the separation conditions to provide a more accurate simulation basis. Several design scenarios were investigated. A two-stage process with a recycle stream is determined as the optimal design, in which the specific cost for purifying H-2 to 99.5 vol% with H-2 loss of <10% reaches only 0.156 $/Nm(3). The techno-economic feasibility study of biohydrogen purification with simultaneous CO2 capture was also performed through an alternative design by introducing a 3rd-stage using the same membrane or an H-2-selective membrane. Adding a 3rd-stage membrane can capture and purify CO2 as a side product of various purities, which further decreases the H-2 loss, leading to additional economic benefits.