Separation of biobutanol from ABE fermentation broth via pervaporation using PDMS composite membranes

使用 PDMS 复合膜通过渗透蒸发从 ABE 发酵液中分离生物丁醇

• 批准号: 494085-2016
• 负责人: Thibault, Jules
• 金额: $ 1.82万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=602989
• 关键词: Separation; biobutanol; ABE; fermentation; broth

Recently, butanol as a biofuel produced from biomass has been on the radar of researchers and industry. The increased demand of fossil fuel along with the depletion of economical crude oil resources, environmental challenges such as the accumulation of CO2 and the highly oscillating oil price are some of the reasons for the huge interest in biofuels. Butanol production from ABE fermentation could be a good biofuel alternative as it has fuel characteristics that are closer to gasoline and is considered to be a better biofuel than ethanol. However, there are significant challenges to overcome to make butanol an economically-viable biofuel using fermentation. Some of these challenges are the need for inexpensive feed-stocks, improved fermentation performance to achieve higher final butanol concentration and higher yield, an efficient method for solvent recovery, and water recycle. This can be achieved with in-situ butanol recovery during fermentation to allow the fermentation to proceed further. One technique that is suitable for this selective recovery process is membrane pervaporation. To improve the performance of the pervaporation separation of biofuels and increase the productivity, a dense membrane such as PDMS with the highest performance possible is required. Petro SepTM is a leading company in the field of treatment of water and various membrane-based separating technologies including vacuum membrane distillation, pervaporation, reverse osmosis, ultrafiltration, and microfiltration. One of the main areas of interest of the Petro SepTM Corporation is the pervaporation separation process particularly for the separation of organic solvents such as ethanol and butanol as a biofuel

最近，丁醇作为一种从生物质中提取的生物燃料受到了研究人员和工业界的关注。化石燃料需求的增加以及经济原油资源的枯竭、二氧化碳积累等环境挑战以及油价的高度波动是生物燃料产生巨大兴趣的一些原因。ABE发酵生产的丁醇可能是一种很好的生物燃料替代品，因为它具有更接近汽油的燃料特性，被认为是比乙醇更好的生物燃料。然而，要使丁醇通过发酵成为经济上可行的生物燃料，还需要克服重大的挑战。其中一些挑战是需要廉价的原料，改善发酵性能以达到更高的最终丁醇浓度和更高的产量，有效的溶剂回收方法，以及水循环。这可以通过在发酵过程中原位丁醇回收来实现，从而使发酵进一步进行。一种适用于这种选择性回收过程的技术是膜渗透蒸发。为了提高生物燃料的渗透蒸发分离性能，提高生产效率，需要一种性能尽可能高的致密膜，如PDMS。Petro SepTM是水处理和各种膜分离技术领域的领先公司，包括真空膜蒸馏、渗透蒸发、反渗透、超滤和微滤。Petro SepTM公司感兴趣的主要领域之一是渗透蒸发分离过程，特别是用于分离有机溶剂，如乙醇和丁醇作为生物燃料