Abstract Currently, the continuous research on new membrane technologies is oriented to find innovative solutions, including the use of environmentally friendly materials, for the preparation of polymeric membranes and their utilization in gas separation keeping a particular focus at the circular economy approach. In particular, membrane processes applied to CO2 separation represents today an intensified and alternative process to the conventional operations, offering several advantages such as lower energy consumption and reduced plant volume as foreseen by the process intensification strategy. Furthermore, the utilization of biopolymers as membrane materials could be combined with the exploitation of raw feedstocks in the optic of carbon footprint reduction. Pursuing the principles of the green process engineering, CO2 separation using biopolymers based membranes may represent a new paradigm for realizing a whole environmentally friendly process. This review aims to emphasize the role of new bio-materials in preparing membranes useful for fuel processing and, in particular, for CO2 capture, highlighting the benefits and drawbacks of their adoption with respect to the traditional classes of polymeric membranes.

中文翻译：

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用于二氧化碳分离可持续膜的生物聚合物：综述

摘要 目前，对新膜技术的持续研究旨在寻找创新解决方案，包括使用环保材料，用于制备聚合物膜及其在气体分离中的应用，特别关注循环经济方法。特别是，应用于 CO2 分离的膜工艺在今天代表了传统操作的强化和替代工艺，提供了几个优势，如工艺强化策略所预见的更低的能耗和减少的工厂体积。此外，生物聚合物作为膜材料的利用可以与原始原料的开发相结合，以减少碳足迹。遵循绿色工艺工程的原则，使用基于生物聚合物的膜分离 CO2 可能代表实现整个环境友好过程的新范例。本综述旨在强调新生物材料在制备用于燃料加工，特别是用于 CO2 捕获的膜方面的作用，强调采用它们相对于传统类型的聚合物膜的优点和缺点。