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EAGER: Exploiting carbon and nitrogen compounds for energy positive wastewater treatment

EAGER：利用碳和氮化合物进行积极的能源废水处理

基本信息

批准号：
1632019
负责人：
Veera Gnaneswar Gude
金额：
$ 6万
依托单位：
Mississippi State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2017
资助国家：
美国
起止时间：
2017-01-15 至 2018-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1632019&HistoricalAwards=false
关键词：
EAGER Exploiting carbon nitrogen compounds

项目摘要

1632019 Gude Wastewater treatment and nutrient removal schemes are energy-intensive. This research provides an innovative solution to integrate new microbial systems to develop energy-positive wastewater treatment and desalination. A key objective of this research is to use microbes in an electrochemical cell to remove nitrogen compounds at one electrode (the cathode) and to oxidize carbon compounds at the other electrode (the anode). This EAGER project focuses on the feasibility of using bacteria as a catalyst at the cathode. If successful, the results of this project could guide the design of electrochemical cells that would simultaneously remove pollutants from wastewater, desalinate brackish water, and produce electrical energy.A wide range of encouraging advancements of various bioelectrochemical systems for water treatment have recently been reported. A major challenge is to determine the rate limiting relationships between the bioelectrochemical processes in the bioanode and biocathode biofilms. This EAGER project has the following goals: 1) Discover and establish an energy-positive synergistic relationship between bioanode and anerobic ammonium oxidation (anammox) biocathode processes in microbial desalination cells; 2) Evaluate the performance of anammox bacteria in a bioelectrochemical cell and study the growth kinetics and nitrogen removal capabilities to correlate microbiological parameters with environmental factors and process performance; and 3) Provide research and education opportunities for graduate, undergraduate, and high school students from underrepresented groups and provide outreach to the broader community. The transformative aspect of this project is integrating tertiary wastewater treatment and desalination processes, coupled with concurrent electricity production inspired by bioelectrochemical principles. To overcome the major challenges for the most envisioned applications of microbial desalination cells, this research capitalizes on anammox biocathode development and integrates powerful high-throughput molecular sequencing, advanced process characterization, and electrochemical impedance tools to develop energy-positive integrated wastewater-desalination systems. This project has the potential for wider applications in reclaiming high quality effluents from municipal, agricultural and industrial wastewaters combined with desalination. This EAGER project is enriched by interdisciplinary research activities among electrochemistry, molecular biology, microbiology, environmental and chemical engineering disciplines and positively impacts K-12 students, especially motivating them toward STEM fields.

1632019 Gude 废水处理和营养物去除方案属于能源密集型项目。这项研究提供了一种创新的解决方案，可以整合新的微生物系统来开发节能废水处理和海水淡化。这项研究的一个主要目标是利用电化学电池中的微生物去除一个电极（阴极）上的氮化合物并氧化另一个电极（阳极）上的碳化合物。这个 EAGER 项目重点研究使用细菌作为阴极催化剂的可行性。如果成功，该项目的结果可以指导电化学电池的设计，该电池可以同时去除废水中的污染物、淡化苦咸水并产生电能。最近报道了各种水处理生物电化学系统取得了一系列令人鼓舞的进展。一个主要挑战是确定生物阳极和生物阴极生物膜中生物电化学过程之间的速率限制关系。该EAGER项目有以下目标：1）发现并建立微生物脱盐细胞中生物阳极和厌氧氨氧化（anammox）生物阴极过程之间的能量正协同关系； 2）评估生物电化学池中厌氧氨氧化菌的性能，研究其生长动力学和脱氮能力，将微生物参数与环境因素和工艺性能相关联； 3) 为代表性不足群体的研究生、本科生和高中生提供研究和教育机会，并向更广泛的社区提供推广服务。该项目的变革之处在于整合了三级废水处理和海水淡化工艺，以及受生物电化学原理启发的并行发电。为了克服微生物海水淡化电池最设想的应用的主要挑战，本研究利用厌氧氨氧化生物阴极的开发，并集成强大的高通量分子测序、先进的过程表征和电化学阻抗工具来开发正能量集成废水海水淡化系统。该项目在从市政、农业和工业废水中回收高质量废水并结合海水淡化方面具有更广泛的应用潜力。这个 EAGER 项目丰富了电化学、分子生物学、微生物学、环境和化学工程学科之间的跨学科研究活动，对 K-12 学生产生了积极影响，特别是激励他们进入 STEM 领域。