Biochemical and physiochemical processes for resource valorization

资源增值的生化和物理化学过程

• 批准号: RGPIN-2020-06060
• 负责人: Rehmann, Lars
• 金额: $ 2.84万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=741005
• 关键词: Biochemical; physiochemical; processes; resource; valorization

The perspectives for biomass-derived fuels and chemicals are an ever-moving target due to uncertainties in the energy sector and inconsistent environmental policies. Grain-based ethanol and biodiesel derived from waste oils or purpose grown crops are still the predominant commercial products with a renewed interest in methane and hydrogen derived through anaerobic digestion. However, the outlook appears to involve a more diverse product portfolio and flexible conversion processes are able to handle diverse feedstocks. The current main usage for biomass derived bulk chemicals is as energy carriers, largely for the automotive sector. The onset of electric and autonomous vehicles in combination with urbanization might reduce this demand. However, high-density energy carriers will still be needed in the aviation and shipping industry and growing environmental concerns lead to a re-evaluation of the materials used in the packaging sector. Hence, biomass remains a large and attractive source for a broad range of materials and Canada is in the advantageous position of having access to extensive biomass resources not just due to their simple abundance, but also through a highly developed agricultural and forestry sector. Large scale biomass conversion technologies will likely not be realized the same as petrochemical refining and conversion technologies. The economy of scale found in the petrochemical industry cannot be transferred to bioconversion processes simply due to limitation caused by feedstock transportation (no pipelines for corn stover), availability, and homogeneity. Hence biomass conversion facilities will be specialized, medium scale plants, analogous to pulp and paper mills, an area where Canada has vast expertise and existing underutilized assets and infrastructure. Products of interest are chemical building blocks (C4 and larger) that can be further transformed and or polymerized such as succinic acid propanediol, or butanol. Significant scientific and technical breakthroughs are required to achieve competitiveness of biorefineries and the proposed research will attempt to address some of the key challenges. The proposed research has three key objectives: 1.Development of terrestrial and aquatic biomass pretreatment with deep eutectic solvents 2.Synthetic biology vs. synthetic consortia: Development of microbial mixed culture processes as a basis for rational strain development 3.Development of novel highly integrated fermentation processes

由于能源部门的不确定性和不一致的环境政策，生物质衍生燃料和化学品的前景是一个不断变化的目标。来自废油或专用作物的谷物基乙醇和生物柴油仍然是主要的商业产品，对通过厌氧消化获得的甲烷和氢气重新产生了兴趣。然而，前景似乎涉及更多样化的产品组合和灵活的转化工艺能够处理不同的原料。 生物质衍生的散装化学品目前的主要用途是作为能源载体，主要用于汽车行业。电动汽车和自动驾驶汽车的出现以及城市化可能会减少这一需求。然而，航空和航运业仍然需要高密度的能量载体，日益增长的环境问题导致对包装行业使用的材料进行重新评估。 因此，生物质仍然是一个大的和有吸引力的来源，为广泛的材料和加拿大是在有机会获得广泛的生物质资源，不仅是因为他们简单的丰富，而且还通过一个高度发达的农业和林业部门的有利地位。 大规模的生物质转化技术可能不会像石化精炼和转化技术那样实现。石油化工行业的规模经济不能简单地转移到生物转化过程中，这是由于原料运输（没有玉米秸秆管道）、可用性和同质性造成的限制。因此，生物质转化设施将是专业化的中型工厂，类似于纸浆和造纸米尔斯厂，加拿大在这一领域拥有丰富的专业知识和现有的未充分利用的资产和基础设施。感兴趣的产物是可以进一步转化和/或聚合的化学结构单元（C4和更大），例如琥珀酸、丙二醇或丁醇。要实现生物炼制的竞争力，需要重大的科学和技术突破，拟议的研究将试图解决一些关键挑战。 本研究主要有三个目标：1.低共熔溶剂预处理陆生和水生生物质的开发2.合成生物学与合成菌群：微生物混合培养工艺的开发作为合理菌株开发的基础3.新型高度集成发酵工艺的开发