SBIR Phase I: Cultivation of Duckweed for Bioremediation of Delaware and Chesapeake Watersheds, and for the Sustainable Production of a Renewable Chemical Feedstock

该小企业创新研究（SBIR）第一阶段项目旨在开发一种用于家禽废物生物修复的浮萍系统，并将浮萍用作丙酮丁醇梭菌（Cac）生物燃料生产的可再生原料。农业、城市和其他来源的径流导致切萨皮克和其他海湾的富营养化，其中大约一半的径流来自农业，特别是德尔马瓦的家禽养殖。这项工作将提供一种替代的营养减少策略，同时为梭菌生物丁醇发酵和家禽饲料补充剂提供原料。目前的生物丁醇工作依赖于玉米水解产物，而浮萍是一种有吸引力的可再生原料。生命周期的环境影响评估表明，理想的系统结合联合收割机战略布局的小型/中型废水整治与biofuel原料production.The更广泛的/商业的影响，这项研究是家禽废物bioremedation战略的发展，再加上可再生的化学和生物燃料技术的生物量的发展。该第一阶段项目的目标是最大限度地修复粪便，同时为Cac生物丁醇发酵生产生物质。不可再生能源的枯竭导致石油价格高涨，这突出表明经济上可行的利用可再生能源生产生物燃料的技术的重要性。可再生生物质应该是碳中和的，并有效地用于生物炼制生产。生物精炼的经济潜力受到与粮食供应经济学（即玉米）竞争的纤维素材料的阻碍。来自滋扰植物浮萍的生物质与使用梭菌生物丁醇生产相结合的商业潜力是特殊的，但仍未开发。本项目旨在展示这种潜力。

This Small Business Innovation Research (SBIR) Phase I project aims to develop a duckweed system for poultry waste bioremediation and use of the duckweed as a renewable feedstock for Clostridium acetobutylicum (Cac) biofuel production. Runoff from agricultural, municipal and other sources leads to eutrophication of the Chesapeake and other bays, with approximately half of the loads from agriculture, particularly poultry production on Delmarva. This work will provide an alternative nutrient reduction strategy, while simultaneously providing feedstock for clostridial biobutanol fermentation and poultry feed supplements. Current biobutanol work relies on corn hydrolysate, and duckweed is an attractive renewable feedstock. Life cycle assessments of environmental impacts indicate the ideal systems combine strategic placements of small/medium-scale wastewater remediation with biofuel feedstock production.The broader/commercial impacts of this research are the development of poultry waste bioremedation strategies coupled with the development of that biomass for renewable chemical and biofuel technologies. The goal of this Phase I project is to maximize manure remediation while producing biomass for Cac biobutanol fermentation. Depletion of non-renewable energy sources, leading to high oil prices, highlights the importance of economically-viable technologies for production of biofuels from renewables. Renewable biomasses should be carbon-neutral and be efficiently used in biorefinery production. The economic potential of biorefineries is hindered by cellulosic materials that compete with food supply economics (i.e. corn). The commercial potential of a biomass from a nuisance plant, duckweed, combined with the use of clostridia biobutanol production is exceptional, but remains unexplored. This project aims to demonstrate this potential.