Wenting Zhou, Yuanmiaoliang Chen, Dejun Feng, Lu Xiao, Xianhui Li and Zhangxin Wang*,
{"title":"膜接触器中膜润湿阻力与二氧化碳吸收率之间的相互作用:气液界面的关键作用","authors":"Wenting Zhou, Yuanmiaoliang Chen, Dejun Feng, Lu Xiao, Xianhui Li and Zhangxin Wang*, ","doi":"10.1021/acsestengg.4c0018010.1021/acsestengg.4c00180","DOIUrl":null,"url":null,"abstract":"<p >Membrane wetting induced by liquid absorbents severely hinders the practical applications of a gas–liquid membrane contactor (GLMC) for carbon dioxide (CO<sub>2</sub>) capture. To overcome this challenge, membranes with enhanced wetting resistance have been developed, but their CO<sub>2</sub> absorption rates have often been overlooked. Herein, we unveil the interplay between membrane wetting resistance and the CO<sub>2</sub> absorption rate for different GLMC membranes and elucidate the underlying mechanisms. Specifically, two representative membranes were used in this study: a polyvinylidene fluoride (PVDF) membrane with interconnected pores and an anodic aluminum oxide (AAO) membrane with disconnected pores. For each membrane, we modify it using fluoroalkyl silane agents with different chain lengths to obtain a range of membranes with different wetting resistances. Through GLMC tests, we identify a trade-off between membrane wetting resistance and the CO<sub>2</sub> absorption rate for the PVDF membranes, i.e., an enhanced wetting resistance leads to a lowered initial CO<sub>2</sub> flux. In contrast, for the AAO membranes, the CO<sub>2</sub> absorption rate is independent of the membrane wetting resistance. Using electrochemical impedance and ultrasonic time-domain reflectometry analysis, the interplay between membrane wetting resistance and the CO<sub>2</sub> absorption rate can be explained by the change of the gas–liquid interfaces in the GLMC membranes. This study reveals the critical role of the gas–liquid interface in GLMC for CO<sub>2</sub> capture, providing valuable insights into membrane development for environmental applications of GLMC.</p>","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.4000,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Interplay between Membrane Wetting Resistance and the Carbon Dioxide Absorption Rate in a Membrane Contactor: The Critical Role of the Gas–Liquid Interface\",\"authors\":\"Wenting Zhou, Yuanmiaoliang Chen, Dejun Feng, Lu Xiao, Xianhui Li and Zhangxin Wang*, \",\"doi\":\"10.1021/acsestengg.4c0018010.1021/acsestengg.4c00180\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Membrane wetting induced by liquid absorbents severely hinders the practical applications of a gas–liquid membrane contactor (GLMC) for carbon dioxide (CO<sub>2</sub>) capture. To overcome this challenge, membranes with enhanced wetting resistance have been developed, but their CO<sub>2</sub> absorption rates have often been overlooked. Herein, we unveil the interplay between membrane wetting resistance and the CO<sub>2</sub> absorption rate for different GLMC membranes and elucidate the underlying mechanisms. Specifically, two representative membranes were used in this study: a polyvinylidene fluoride (PVDF) membrane with interconnected pores and an anodic aluminum oxide (AAO) membrane with disconnected pores. For each membrane, we modify it using fluoroalkyl silane agents with different chain lengths to obtain a range of membranes with different wetting resistances. Through GLMC tests, we identify a trade-off between membrane wetting resistance and the CO<sub>2</sub> absorption rate for the PVDF membranes, i.e., an enhanced wetting resistance leads to a lowered initial CO<sub>2</sub> flux. In contrast, for the AAO membranes, the CO<sub>2</sub> absorption rate is independent of the membrane wetting resistance. Using electrochemical impedance and ultrasonic time-domain reflectometry analysis, the interplay between membrane wetting resistance and the CO<sub>2</sub> absorption rate can be explained by the change of the gas–liquid interfaces in the GLMC membranes. This study reveals the critical role of the gas–liquid interface in GLMC for CO<sub>2</sub> capture, providing valuable insights into membrane development for environmental applications of GLMC.</p>\",\"PeriodicalId\":7008,\"journal\":{\"name\":\"ACS ES&T engineering\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":7.4000,\"publicationDate\":\"2024-06-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS ES&T engineering\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acsestengg.4c00180\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, ENVIRONMENTAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS ES&T engineering","FirstCategoryId":"1085","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsestengg.4c00180","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
Interplay between Membrane Wetting Resistance and the Carbon Dioxide Absorption Rate in a Membrane Contactor: The Critical Role of the Gas–Liquid Interface
Membrane wetting induced by liquid absorbents severely hinders the practical applications of a gas–liquid membrane contactor (GLMC) for carbon dioxide (CO2) capture. To overcome this challenge, membranes with enhanced wetting resistance have been developed, but their CO2 absorption rates have often been overlooked. Herein, we unveil the interplay between membrane wetting resistance and the CO2 absorption rate for different GLMC membranes and elucidate the underlying mechanisms. Specifically, two representative membranes were used in this study: a polyvinylidene fluoride (PVDF) membrane with interconnected pores and an anodic aluminum oxide (AAO) membrane with disconnected pores. For each membrane, we modify it using fluoroalkyl silane agents with different chain lengths to obtain a range of membranes with different wetting resistances. Through GLMC tests, we identify a trade-off between membrane wetting resistance and the CO2 absorption rate for the PVDF membranes, i.e., an enhanced wetting resistance leads to a lowered initial CO2 flux. In contrast, for the AAO membranes, the CO2 absorption rate is independent of the membrane wetting resistance. Using electrochemical impedance and ultrasonic time-domain reflectometry analysis, the interplay between membrane wetting resistance and the CO2 absorption rate can be explained by the change of the gas–liquid interfaces in the GLMC membranes. This study reveals the critical role of the gas–liquid interface in GLMC for CO2 capture, providing valuable insights into membrane development for environmental applications of GLMC.
期刊介绍:
ACS ES&T Engineering publishes impactful research and review articles across all realms of environmental technology and engineering, employing a rigorous peer-review process. As a specialized journal, it aims to provide an international platform for research and innovation, inviting contributions on materials technologies, processes, data analytics, and engineering systems that can effectively manage, protect, and remediate air, water, and soil quality, as well as treat wastes and recover resources.
The journal encourages research that supports informed decision-making within complex engineered systems and is grounded in mechanistic science and analytics, describing intricate environmental engineering systems. It considers papers presenting novel advancements, spanning from laboratory discovery to field-based application. However, case or demonstration studies lacking significant scientific advancements and technological innovations are not within its scope.
Contributions containing experimental and/or theoretical methods, rooted in engineering principles and integrated with knowledge from other disciplines, are welcomed.