Biobutanol is one of the promising biofuels, which is produced by fermentation. The concentration of butanol in the fermentation broth does not usually reach 2% (by wt). To use biobutanol as fuel, it is necessary to purify this mixture. In this study, chitosan and sodium alginate hybrid membranes filled with zeolitic imidazolate framework-90 (ZIF-90) were synthesized and utilized for butanol dehydration by the pervaporation process. The synthesized pristine and hybrid membranes were characterized by SEM, FTIR, TGA and contact angle. The swelling resistance of the membrane was determined by sorption tests. Hybrid membranes display higher thermal and mechanical stability and swelling resistance compared to pristine membranes. The separation performance of membranes was determined through pervaporation process. The effects of ZIF loading ratio, process temperature and feed concentration on separation performance were investigated. Compared to pristine membranes, hybrid membranes were found to be more effective for dehydration of butanol by pervaporation. Among hybrid membranes, sodium alginate hybrid membranes filled with ZIF-90 displayed the best separation performance. While the highest flux and separation factor values of 0.987 kg/m²h and 1978 were obtained using sodium alginate hybrid membrane, the flux value of 0.325 kg/m²h and the separation factor value of 1124 were achieved in chitosan hybrid membrane.

生物丁醇是一种很有前途的生物燃料，它是通过发酵生产的。发酵液中丁醇的浓度通常不会达到 2%（按重量计）。要使用生物丁醇作为燃料，必须净化这种混合物。在这项研究中，合成了壳聚糖和海藻酸钠混合膜，其中填充了沸石咪唑酯骨架-90（ZIF-90），并通过渗透蒸发工艺用于丁醇脱水。合成的原始膜和混合膜通过 SEM、FTIR、TGA 和接触角进行表征。膜的溶胀阻力通过吸附试验确定。与原始膜相比，混合膜显示出更高的热稳定性和机械稳定性以及抗溶胀性。膜的分离性能是通过渗透蒸发过程确定的。ZIF加载比的影响，研究了工艺温度和进料浓度对分离性能的影响。与原始膜相比，发现混合膜通过渗透蒸发对丁醇脱水更有效。在杂化膜中，填充ZIF-90的海藻酸钠杂化膜表现出最好的分离性能。而最高通量和分离因子值为 0.987 kg/m使用海藻酸钠杂化膜获得² h和1978年，壳聚糖杂化膜的通量值为0.325 kg/m ² h，分离因子值为1124。