文献类型：期刊文献

英文题名：Long-term performance of highly selective carbon hollow fiber membranes for biogas upgrading in the presence of H2S and water vapor

作者：Brunetti, Adele[1];Lei, Linfeng[2];Avruscio, Elisa[1];Karousos, Dionysis S.[3];Lindbrathen, Arne[4];Kouvelos, Evangelos P.[3];He, Xuezhong[5];Favvas, Evangelos P.[3];Barbieri, Giuseppe[1]

机构：[1]Natl Res Council Inst Membrane Technol ITM CNR, Via Pietro BUCCI,Cubo 17C, I-87036 Arcavacata Di Rende, CS, Italy;[2]East China Univ Sci & Technol, State Key Lab Chem Engn, Sch Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Natl Ctr Sci Res Demokritos, Inst Nanosci & Nanotechnol, Athens 15341, Greece;[4]Norwegian Univ Sci & Technol, Dept Chem Engn, NO-7491 Trondheim, Norway;[5]Guangdong Technion Israel Inst Technol GTIIT, Dept Chem Engn, 241 Daxue Rd, Shantou 515063, Peoples R China

年份：2022

卷号：448

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20222812352243);WOS:【SCI-EXPANDED(收录号:WOS:000879315600001)】；

基金：The authors A. Brunetti, G. Barbieri acknowledge the project BIOVALUE "Advanced Membranes for biogas upgrading and high addedvalue compounds recovery", co-funded by Regione Calabria in the framework of M-Era.Net 2018 is for co-funding this work. A. Brunetti and E. P. Favvas acknowledge the National Research Council of Italy in the framework of the Short-Term Mobility program 2021 for co-funding this work. The authors L. Lei, A. Lindbrathen, E. P. Favvas and X. He acknowledge the CO2Hing project from the Research Council of Norway.

语种：英文

外文关键词：Biogas upgrading; Carbon capture; Carbon hollow fiber membranes; H2S; CO2/CH4 selectivity; Gas sorption

摘要：Biogas is an increasingly attractive renewable resource that needs to be upgraded to meet either the natural gas pipeline quality or the biomethane requirement. The use of carbon membranes is a promising alternative to conventional separation technologies, but, up to now, few attempts have been made to systematically investigate their separation performance under real biogas upgrading conditions, for instance, the presence of water vapor and H2S in the feed stream. In this work, for the first time in literature, the separation performances of as-prepared cellulose-based carbon hollow fiber membranes were monitored for 183 days under continuous exposure to a gas stream also containing H2S and/or water vapor. After the evaluation of their CO2 and CH4 sorption (2,98 mmol g(-1) and 2,00 mmol g(-1), respectively at 298 K and 10 bar), diffusion(2.45 x 10(-7) cm(2) s(-1) for CO2), and permeation properties (120.9 and 2.3 barrer, respectively at 308 K) with single gases, long-term tests were carried out by feeding gas mixtures with typical biogas composition. It was found that the exposure of the membranes to H2S (up to 500 ppm) and water vapor (relative humidity of 90%) provoked a reduction of CO2 and CH4 permeability compared to the "clean and dry" mixed gas, which resulted in an increment of selectivity, which reached a value of more than 200. Overall, after more than 180 days of continuous testing, the membranes exhibited remarkable CO2/CH4 selectivity with endurability of the H2S and water vapor, confirming the fact of being good candidates for biogas upgrading.