Francesco Galiano, Asma Msahel, Francesca Russo, Natalia Rovella, Alfonso Policicchio, Sofiane Ben Hamouda, Amor Hafiane, Roberto Castro-Muñoz, Alberto Figoli
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引用次数: 0
摘要
本研究探讨了壳聚糖基膜与三种不同的深共晶溶剂(DES)混合后用于甲醇和甲基叔丁基醚气相分离的开发情况。之所以选择 DESs,是因为它们具有生态友好的特性和提高膜性能的潜力。交联和非交联壳聚糖(CS)膜在形态、化学成分、润湿性、机械阻力和溶剂吸收方面都有特征。渗透测试表明,DES 的加入显著提高了膜对甲醇的选择渗透性,与原始 CS 膜相比,分离效率提高了三倍。膜对进料温度有很强的依赖性,温度越高,渗透通量越大,但分离因子却越低。与戊二醛交联可减少聚合物基质中的自由体积,从而进一步提高膜的选择性。这些发现强调了 DESs 作为绿色添加剂改善生物聚合物膜性能的潜力,使其成为高效、环保的有机-有机分离的理想候选材料。
Enhancing the Separation Performance of Chitosan Membranes Through the Blending with Deep Eutectic Solvents for the Pervaporation of Polar/Non-Polar Organic Mixtures.
This study explores the development of chitosan-based membranes blended with three distinct deep eutectic solvents (DESs) for the pervaporation separation of methanol and methyl tert-butyl ether. DESs were selected for their eco-friendly properties and their potential to enhance membrane performance. The chitosan (CS) membranes, both crosslinked and non-crosslinked, were characterized in terms of morphology, chemical composition, wettability, mechanical resistance, and solvent uptake. Pervaporation tests revealed that incorporating DESs significantly enhanced the membranes' selective permeability toward methanol, with up to a threefold increase in separation efficiency compared to pristine CS membranes. The membranes demonstrated a strong dependence on feed temperature, with higher temperatures improving permeation flux but reducing separation factor. Crosslinking with glutaraldehyde further increased membrane selectivity by reducing free volume into the polymer matrix. These findings underscore the potential of DESs as green additives for improving the performance of biopolymer membranes, making them promising candidates for efficient and eco-friendly organic-organic separations.
MembranesChemical Engineering-Filtration and Separation
CiteScore
6.10
自引率
16.70%
发文量
1071
审稿时长
11 weeks
期刊介绍:
Membranes (ISSN 2077-0375) is an international, peer-reviewed open access journal of separation science and technology. It publishes reviews, research articles, communications and technical notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. Full experimental and/or methodical details must be provided.