Hassan N S, Jalil A A, Bahari M B, Khusnun N F, Aldeen E M Sharaf, Mim R S, Firmansyah M L, Rajendran Saravanan, Mukti R R, Andika R, Devianto H
Centre of Hydrogen Energy, Institute of Future Energy, 81310 UTM Johor, Bahru, Johor, Malaysia; Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor, Bahru, Johor, Malaysia.
Centre of Hydrogen Energy, Institute of Future Energy, 81310 UTM Johor, Bahru, Johor, Malaysia; Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor, Bahru, Johor, Malaysia.
Chemosphere. 2023 Feb;314:137709. doi: 10.1016/j.chemosphere.2022.137709. Epub 2022 Dec 30.
Biogas consisting of carbon dioxide/methane (CO/CH) gas mixtures has emerged as an alternative renewable fuel to natural gas. The presence of CO can decrease the calorific value and generate greenhouse gas. Hence, separating CO from CH is a vital step in enhancing the use of biogas. Zeolite and zeolite-based mixed matrix membrane (MMM) is considered an auspicious candidate for CO/CH separation due to thermal and chemical stability. This review initially addresses the development of zeolite and zeolite-based MMM for the CO/CH separation. The highest performance in terms of CO permeance and CO/CH selectivity was achieved using zeolite and zeolite-based MMM, which exhibited CO permeance in the range of 2.0 × 10-7.0 × 10 mol m s Pa with CO/CH selectivity ranging from 3 to 300. Current trends directed toward improving CO/CH selectivity via modification methods including post-treatment, ion-exchanged, amino silane-grafted, and ionic liquid encapsulated of zeolite-based MMM. Those modification methods improved the defect-free and interfacial adhesions between zeolite particulates and polymer matrices and subsequently enhanced the CO/CH selectivity. The modifications via ionic liquid and silane methods more influenced the CO/CH selectivity with 90 and 660, respectively. This review also focuses on the possible applications of zeolite-based MMM, which include the purification and treatment of water as well as biomedical applications. Lastly, future advances and opportunities for gas separation applications are also briefly discussed. This review aims to share knowledge regarding zeolite-based MMM and inspire new industrial applications.
由二氧化碳/甲烷（CO₂/CH₄）气体混合物组成的沼气已成为天然气的一种替代可再生燃料。CO₂的存在会降低热值并产生温室气体。因此，从CH₄中分离出CO₂是提高沼气利用效率的关键一步。沸石和基于沸石的混合基质膜（MMM）由于具有热稳定性和化学稳定性，被认为是用于CO₂/CH₄分离的理想候选材料。本文综述首先介绍了用于CO₂/CH₄分离的沸石和基于沸石的MMM的发展情况。使用沸石和基于沸石的MMM在CO₂渗透率和CO₂/CH₄选择性方面取得了最高性能，其CO₂渗透率在2.0×10⁻⁷ - 7.0×10⁻⁷ mol m⁻² s⁻¹ Pa⁻¹范围内，CO₂/CH₄选择性在3至300之间。当前的趋势是通过包括后处理、离子交换、氨基硅烷接枝和离子液体封装基于沸石的MMM等改性方法来提高CO₂/CH₄选择性。这些改性方法改善了沸石颗粒与聚合物基体之间的无缺陷性和界面粘附性，从而提高了CO₂/CH₄选择性。通过离子液体和硅烷方法进行的改性对CO₂/CH₄选择性影响更大，分别为90和660。本文综述还重点介绍了基于沸石的MMM的可能应用，包括水的净化和处理以及生物医学应用。最后，还简要讨论了气体分离应用的未来进展和机遇。本文综述旨在分享有关基于沸石的MMM的知识，并激发新的工业应用。
