EAGER: A Novel Bioprocess for the Valorization of Waste and Biomass

EAGER：一种用于废物和生物质增值的新型生物工艺

• 批准号: 1600075
• 负责人: Alexander Mathews
• 金额: $ 11.33万
• 依托单位: Kansas State University
• 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: 2016-03-15 至 2019-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1600075&HistoricalAwards=false
• 关键词: EAGER; Novel; Bioprocess; Valorization; Waste

1600075MathewsThe move to transition to a sustainable society will require a paradigm shift in waste management. The treatment and disposal of high-strength organic wastes involves high capital and operating cost expenditures. This project focuses on the valorization of biomass wastes to useful chemicals using a novel low pH microbial fermentation process that affords efficient extraction of the products. The extracted products will provide low-cost biodegradable deicers for applications on roads, highways, and airports for snow and ice control. This benefits include avoidance of waste treatment costs, the generation of value-added products, and the elimination of water and soil pollution from currently used chloride deicers.Considerable amount of energy and resources are expended in aerobic and anaerobic treatment of wastes at present. The only chemical that is currently produced at large scale from organic wastes is methane gas, a low-value commodity chemical that is in excess supply. It is produced by anaerobic process that is costly and complex to operate. This project is aimed at developing a two-stage fermentation process for the conversion of biomass wastes to calcium magnesium acetate and propylene glycol. The EAGER project will develop microbial growth kinetics data and continuous immobilized cell fermentation data for the conversion lactic acid to acetic acid at low pH values where product extraction is most efficient. Novel porous supports will be used for cell immobilization. Extraction studies will be conducted at low pH values for acetic acid extraction. This project will develop new knowledge in the area of low pH bioconversion, advance knowledge in the area of immobilized cell fermentation, and advance knowledge in the area of acid extraction from fermentation liquor at low pH values. This project is transformative as it can engender research into the valorization of many different organic wastes and biomass to useful products. This project will have significant social, economic, and environmental impacts. The proposed project will enable the generation of high-value chemicals that will provide economic benefits to society. The capital and operating costs associated with the treatment of oxygen-demanding wastes will be eliminated. Moreover, the biodegradable deicers that are produced will replace non-biodegradable deicers such as sodium and calcium chlorides that are currently used for road and airport runway deicing. Large-scale application of inorganic salts to deice roads and highways has caused sodium and chloride contamination of surface waters, ground waters, and soils. Society will benefit from the health and aesthetic advantages associated with a cleaner environment and a healthy ecosystem from the use of biodegradable deicers. In addition, these new deicer products will prevent costs associated with automobile corrosion and costs related to rehabilitation of buildings and civil infrastructure that are damaged by application of conventional deicing chloride salts.

1600075Mathews 向可持续社会转型需要废物管理模式的转变。高强度有机废物的处理和处置涉及高资本和运营成本支出。该项目的重点是利用新型低 pH 微生物发酵工艺将生物质废物转化为有用的化学品，该工艺可有效提取产品。提取的产品将提供低成本的可生物降解除冰剂，用于道路、高速公路和机场的冰雪控制。这些好处包括避免废物处理成本、产生增值产品以及消除目前使用的氯化物除冰剂对水和土壤的污染。目前，在废物的好氧和厌氧处理上花费了大量的能源和资源。目前唯一利用有机废物大规模生产的化学品是甲烷气体，这是一种供应过剩的低价值商品化学品。它是通过厌氧工艺生产的，该工艺成本高且操作复杂。该项目旨在开发一种两阶段发酵工艺，将生物质废物转化为醋酸钙镁和丙二醇。 EAGER 项目将开发微生物生长动力学数据和连续固定化细胞发酵数据，以便在产品提取效率最高的低 pH 值下将乳酸转化为乙酸。新型多孔支持物将用于细胞固定。萃取研究将在低 pH 值下进行乙酸萃取。该项目将开发低pH生物转化领域的新知识，推进固定化细胞发酵领域的知识，并推进低pH值发酵液酸提取领域的知识。该项目具有变革性，因为它可以引发对许多不同有机废物和生物质价值转化为有用产品的研究。该项目将产生重大的社会、经济和环境影响。拟议的项目将能够生产高价值化学品，为社会带来经济效益。与处理需氧废物相关的资本和运营成本将被消除。此外，生产的可生物降解除冰剂将取代目前用于道路和机场跑道除冰的不可生物降解除冰剂，例如氯化钠和氯化钙。大规模使用无机盐除冰道路和高速公路已造成地表水、地下水和土壤的钠和氯化物污染。使用可生物降解除冰剂，社会将受益于与更清洁的环境和健康的生态系统相关的健康和美学优势。此外，这些新的除冰剂产品将防止与汽车腐蚀相关的成本以及与因使用传统除冰氯化物盐而损坏的建筑物和民用基础设施的修复相关的成本。

项目成果

Exploitation of acid-tolerant microbial species for the utilization of low-cost whey in the production of acetic acid and propylene glycol

• DOI: 10.1007/s00253-018-9174-3
• 发表时间: 2018-06
• 期刊: Applied Microbiology and Biotechnology
• 影响因子: 5
• 作者: S. S. Veeravalli-S.;A. P. Mathews