SusChEM: COLLABORATIVE RESEARCH: Engineering the hollow-fiber membrane biofilm reactor to convert syngas to valuable products

SusChEM：合作研究：设计中空纤维膜生物膜反应器，将合成气转化为有价值的产品

• 批准号: 1604385
• 负责人: Ryan Lively
• 金额: $ 14.12万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-07-01 至 2020-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1604385&HistoricalAwards=false
• 关键词: SusChEM; COLLABORATIVE; RESEARCH; Engineering; hollow

1603656 / 1604385 PIs: Rittmann, Bruce E. / Lively, Ryan P. Title: SusChEM: COLLABORATIVE RESEARCH: Engineering the hollow-fiber membrane biofilm reactor to convert syngas to valuable productsThe syngas platform for conversion of lignocellulosic biomass to liquid biofuels involves a thermochemical conversion step to produce syngas (H2 + CO) followed by biological conversion of syngas to liquid biofuels. Combining the two steps overcomes the limitations of sequential conversion steps for producing second-generation biofuels, but only when the syngas bioreactor allows high rates of gas delivery to the homoacetogenic bacteria responsible for syngas conversion. The PIs propose a collaborative project aiming to adapt the hollow-fiber membrane biofilm reactor (MBfR), now used for water treatment, to deliver the low-solubility gases directly to a biofilm that grows on the outer surface of a hollow-fiber membrane and utilizes the gas as a substrate. The membrane-based biofilm avoids direct gas-liquid mass transfer, which normally slows the rate of H2 and CO delivery. The over-arching goal is to adapt the MBfR for the production of valuable chemicals from syngas.The proposed collaborative project aims to develop the scientific and engineering foundations for a new environmental-biotechnology platform that allows rapid and cost-effective conversion of syngas to valuable organic products. The proposed research will be focused on developing a fundamental mechanistic understanding of the novel material properties of asymmetric membranes useful in the MBfR, the physiology of homoacetogens that work well in a biofilm, and the interactions of biokinetic, ecological, and mass-transfer processes in biofilms fed with H2 and CO. The proposed research, if successful, will contribute to the foundation of a new environmental biotechnology platform for the production of valuable products from syngas (H2 and CO). The project will involve an experimental investigation focused on the development of membranes and the selection and characterization of suitable microorganisms (homoacetogens). It will also involve the development of a theoretical model, based on the experimental data, to describe and optimize the performance of biofilm reactors. The project will include a STEM education and workforce development effort by involving under-represented community-college students in research. An outreach effort to high school students will be focused on sustainability and green chemistry demonstrations in high school science laboratories and on hosting teachers and students for summer research internships.

1603656 / 1604385 PI：Rittmann，布鲁斯E. / Lively，Ryan P. Title：SusChEM：COLLABORATIVE RESEARCH：Engineering the hollow-fiber membrane reactor to convert syngas to valuable productsThe syngas platform for conversion of lignocellulosic biomass to liquid biofuels involved a thermochemical conversion step to produce syngas（H2 + CO），followed by biological conversion of syngas to liquid biofuels.结合这两个步骤克服了用于生产第二代生物燃料的顺序转化步骤的限制，但仅当合成气生物反应器允许高速率的气体递送到负责合成气转化的同型产乙酸细菌时。PI提出了一个合作项目，旨在适应中空纤维膜生物膜反应器（MBfR），现在用于水处理，将低溶解度气体直接输送到生长在中空纤维膜外表面的生物膜，并利用气体作为基质。基于膜的生物膜避免了直接的气-液传质，这通常会减慢H2和CO输送的速率。总体目标是使MBfR适应于从合成气生产有价值的化学品。拟议的合作项目旨在为新的环境生物技术平台开发科学和工程基础，该平台允许快速且具有成本效益的将合成气转化为有价值的有机产品。拟议的研究将集中在开发一个基本的机械理解的新材料特性的不对称膜中有用的MBfR，在生物膜中工作良好的同型产乙酸菌的生理学，以及生物动力学，生态学和质量传递过程的相互作用在生物膜饲养与H2和CO。拟议的研究，如果成功，将有助于建立一个新的环境生物技术平台，用于从合成气（H2和CO）中生产有价值的产品。该项目将涉及一项实验研究，重点是膜的开发以及合适微生物（同型产乙酸菌）的选择和特性鉴定。它还将涉及一个理论模型的发展，实验数据的基础上，描述和优化生物膜反应器的性能。该项目将包括STEM教育和劳动力发展工作，让代表性不足的社区大学生参与研究。对高中生的外联工作将侧重于在高中科学实验室进行可持续性和绿色化学演示，并接待教师和学生参加暑期研究实习。