Recent Advances on Bioethanol Dehydration using Zeolite Membrane

[摘要] Renewable energy has gained increasing attention throughout the world. Bioethanol has the potential to replace existing fossil fuel usage without much modification in existing facilities. Bioethanol which generally produced from fermentation route produces low ethanol concentration. However, fuel grade ethanol requires low water content to avoid engine stall. Dehydration process has been increasingly important in fuel grade ethanol production. Among all dehydration processes, pervaporation is considered as the most promising technology. Zeolite possesses high potential in pervaporation of bioethanol into fuel grade ethanol. Zeolite membrane can either remove organic (ethanol) from aqueous mixture or water from the mixture, depending on the framework used. Hydrophilic zeolite membrane, e.g. LTA, can easily remove water from the mixture leaving high ethanol concentration. On the other hand, hydrophobic zeolite membrane, e.g. silicate-1, can remove ethanol from aqueous solution. This review presents the concept of bioethanol dehydration using zeolite membrane. Special attention is given to the performance of selected pathway related to framework selection.

[发布机构] Chemical Engineering Department, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung, Jawa Barat; 40132, Indonesia^1

[效力级别] 物理学

[关键词] Dehydration process;Ethanol concentrations;Framework selection;Fuel grade ethanol;Hydrophobic zeolite;Low water-content;Renewable energies;Zeolite membrane