Using mixed anaerobic communities to convert low value biomass into hydrogen

利用混合厌氧群落将低价值生物质转化为氢气

基本信息

批准号：
261797-2009
负责人：
Lalman, Jerald
金额：
$ 1.38万
依托单位：
University of Windsor
依托单位国家：
加拿大
项目类别：
Discovery Grants Program - Individual
财政年份：
2013
资助国家：
加拿大
起止时间：
2013-01-01 至 2014-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=525378
关键词：
Using mixed anaerobic communities convert

项目摘要

Current research on microbial hydrogen production is focused on using pure and mixed cultures. Studies with pure cultures have utilized sterile substrates to prevent contamination. Substrate sterilization is a major disadvantage for processes using pure cultures. Microbial cultures which are able to utilize non-sterile feedstocks could be more flexible and cost effective. Low value agriculture residues such as corn stover and wheat stalks are possible sources of non-sterile feedstocks. Mixed cultures containing acidogens, acetogens and methanogens can consume sugars derived from low value agriculture residues. However, a major concern related to sustained hydrogen production is the presence of hydrogen consuming organisms in mixed anaerobic communities. The proposed research will focus on using long chain fatty acids (LCFAs) to inhibit the hydrogen consuming population. The research plan provides an outline for investigating and developing an anaerobic process for producing hydrogen using low value agriculture agriculture residues. The short-term objectives will identify environmental and process parameters affecting hydrogen production. Batch studies will be conducted to examine the effect of several long chain fatty acids (LCFAs) on the fermentation of pentose and hexose sugars. Adding LCFAs will be employed to increase hydrogen production by inactivating non-spore forming hydrogen consuming organisms and selecting the more favorable hydrogen producing bacteria in both batch and continuous flow studies. The major thrust of the long-term objectives will focus on developing a sustainable continuous system to generate hydrogen.

当前关于微生物氢生产的研究集中在使用纯和混合培养物上。用纯培养物的研究利用无菌底物来防止污染。底物灭菌是使用纯培养物的过程的主要缺点。能够利用非伤害原料的微生物培养物可能更灵活和具有成本效益。低价值农业残留物（例如玉米秸秆和小麦茎）可能是非菌群原料的来源。含有酸性含量，乙蛋白原和甲烷基的混合培养物可以食用源自低价值农业残基的糖。但是，与持续氢有关的主要问题是混合厌氧群落中存在氢消耗生物。拟议的研究将着重于使用长链脂肪酸（LCFA）抑制氢消费人群。该研究计划提供了研究和开发使用低价值农业农业残基生产氢的厌氧过程的大纲。短期目标将确定影响氢产生的环境和过程参数。将进行批处理研究，以检查几种长链脂肪酸（LCFA）对五糖和己糖糖的发酵的影响。添加LCFA将用于通过灭活非散布氢的生物体并在批处理和连续流量研究中选择更有利的氢产生细菌来增加氢的产生。长期目标的主要力量将集中于开发可持续的连续系统以生成氢。