ECO-CBET: Modular Electrochemical Processes for Simultaneous Nitrogen Recovery and Carbon Dioxide Mitigation

ECO-CBET：同时进行氮气回收和二氧化碳减排的模块化电化学过程

• 批准号: 2219089
• 负责人: Mohan Qin
• 金额: $ 168.79万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2219089&HistoricalAwards=false
• 关键词: ECO; CBET; Modular; Electrochemical; Processes

Livestock farming is an essential branch of agriculture that provides protein-rich food products to humans. However, ruminant animal systems produce substantial amounts of greenhouse gas emissions and can have deleterious environmental impacts. Such livestock systems are increasingly under pressure to become more environmentally sustainable. Many of the environmental issues stem from the release of livestock manure constituents, including nutrients, pathogens, and organic matter, into the environment. These releases contaminate surface and ground waters, increase the risk of climate change, cause nuisance odors, and, ultimately, pose a threat to human and animal health. In addition, manure’s high water content and low nutrient density increase the transportation cost to farmlands and limit its effective use. Recovering nutrients from manure can improve nutrient management and minimize the possibility of negative environmental impacts. Climate impacts could be further mitigated by converting the carbon dioxide in the biogas generated from manure processing into fuels and other useful products. This project, a collaboration between investigators at the University of Wisconsin–Madison and Massachusetts Institute of Technology, seeks to overcome the challenges facing manure processing systems through the development of novel modular electrochemical processes. The proposed system will integrate electrochemical processes to simultaneously recover ammonia from livestock manure as fertilizer and convert carbon dioxide to locally-valuable chemicals. The knowledge generated from this research will address the growing need for sustainable and effective livestock manure management. The team will engage K-12, undergraduate, and graduate students in STEM outreach and research experiences. Students identifying as a member of an underrepresented group in STEM will be recruited and mentored through partnerships with on-campus organizations. Benefits to society will also be achieved through outreach and education activities for farmers, policymakers, agriculture educators, and the general public.Livestock manure can lose nutrients, pathogens, and organic matter to the environment, degrading both surface and ground water quality, contributing to climate change, and creating human and animal health issues. Processing manure to recover embedded nutrients can mitigate these impacts by increasing nutrient density, making a more manageable fertilizer that can be economically transported to remote locations. The overall goal of this ECO-CBET project is to develop modular electrochemical processes to tackle carbon, nutrient, and water challenges in livestock manure systems by recovering ammonia as fertilizers with increased nutrient density and producing valuable chemicals from carbon dioxide for on-site application. These electrochemical processes are uniquely enabled by redox reservoirs, which reversibly store electrons and specific ions while serving as interchangeable counter electrodes for flexible integration with complementary electrochemical half-reactions. The ammonium-rich manure wastewater can be fed into a galvanic cell with a bioelectrochemical anode and a redox reservoir cathode that selectively extracts ammonium cations from the milieu. The redox reservoir is introduced into an electrolytic cell, where it serves as an anode, releasing ammonium, and is paired with a carbon dioxide-reducing cathode for co-generation of useful products, including formic acid, a supplemental animal feed preservative, and methane, a renewable feedstock that can be injected into natural gas pipelines. The specific objectives are: 1) develop the pretreatment of livestock manure, synthesize and characterize new redox reservoir materials, and demonstrate the feasibility of redox reservoir-enabled selective ammonia recovery from manure; 2) integrate ammonia recovery with carbon dioxide conversion to value-added products in modular systems; and 3) perform techno-economic and life cycle analyses of individual and combined modular systems. The success of this project will introduce transformative concepts for more efficient nutrient and carbon resource recovery from manure, generate new insights for distributed and sustainable chemical manufacturing, train the next generation of interdisciplinary scientists and engineers, and provide exciting STEM outreach and education opportunities at the intersection of the farmers, policymakers, agriculture educators, and the public.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

牲畜耕种是农业富含量的食品的必不可少的分支机构。和有机物的熨斗。增加对农田的运输成本限制了其有效的用途。我在肥料加工系统面临的挑战中的秘密是新型的模块化电化学过程。有效的牲畜肥料管理将与K-12交战，本科生的经验也将对社会进行，而教育活动也将使农民，政策制定者，然后是Eral Publics。气候变化和建立人类健康是utrient的密度，使得更加经济地运送到偏远地区的felterizer。牲畜肥料系统中的水挑战是通过增加营养成分的葡萄球化剂，并从二氧化碳中产生有价值的化学物质，用于现场应用。富含铵的肥料废水可以喂入THODE，从而将氧化还原储层从有选择地提取铵阳离子。包括甲酸，补充动物饲料防腐剂和甲烷，可再生的原料可以注射到天然气管道中。碳转换为模块化系统中的增值产品；国际科学家和工程师，并在农民，政策制定者，农业教育者和公众的交叉点提供令人兴奋的STEM宣传和教育机会。该奖项反映了NSF'Stututory和Beanend值得支持Thentell thentell excectual的优点和更广泛的影响。

项目成果

Ammonia recovery from organic nitrogen in synthetic dairy manure with a microbial fuel cell

• DOI: 10.1016/j.chemosphere.2023.138388
• 发表时间: 2023-03-20
• 期刊: CHEMOSPHERE
• 影响因子: 8.8
• 作者: Burns, McKenzie;Qin, Mohan
• 通讯作者: Qin, Mohan