International Collaborative Research: Desalination for Global Water Resources Using Biofouling-Resistant Nanocomposite Membranes

国际合作研究：利用抗生物污垢纳米复合膜对全球水资源进行海水淡化

• 批准号: 1264001
• 负责人: Tequila Harris
• 金额: $ 3.42万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-05-15 至 2015-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1264001&HistoricalAwards=false
• 关键词: International; Collaborative; Research; Desalination; Global

1264039 1264001 1264103 Summary of Proposal: This project is to support a collaborative research including Dr. Isabel Escobar, University of Toledo, Dr. Tequila Harris, Georgia Tech. and Dr. Vinka Craver, University of Rhode Island in collaboration with Dr. Muna Abu-Dalo, Jordan University of Science and Technology (JUST), and Dr. Elham El-Zanati, Egyptian National Research Center (ENRC), Egypt. They will address the mitigation of membrane biofouling, due to rejected chemicals and microbes, by impregnating the solutions with nanoparticles. With the rapid growth and development of populations around the world, and the inherent need for clean water, it is imperative to treat brackish- and sea-water sources. The two leading desalination technologies are thermal and membrane technologies, specifically reverse osmosis (RO). Nanofiltration (NF) is used for the removal of other substances from water source, and also commonly used for the desalination of water. While both RO and NF can produce potable water, RO removes a large majority of solutes, which leaves the permeate water void of essential nutrients (e.g. calcium, magnesium ions) and placing the nutrient levels below that of the required World Health Organization standards. Thus nutrients must be added (i.e. reminerailization) to bring the water back to the standard levels for drinking water. NF methods, on the other hand, remove fewer solutes, and may avoid the need to remineralize the water. Thus, it is a more desirable technology for developing nations. This collaborative research will address this process and will elucidate the mitigation of biofouling, through comprehensive experimental analyses and testing. Most of the research and development in the area of biofouling prevention has focused on pretreatment of the feed water, improved cleaning solutions and cleaning procedures. The international team will develop biofouling-resistant (BRN) nanocomposite membranes, loaded with copper or silver nanoparticles, from synthesis to macro scale production. Dr Abu-Dalo and Dr. El-Zanati will characterize the water conditions, Dr. Craver and Dr. Escobar will develop and characterize the proposed membranes, Dr. Harris will fabricate them, and Dr. Dalo and Dr. El-Zanati will test the membranes, and conduct the analysis, in harsh brackish water environments.Intellectual merit: Biofouling is an important problem in water treatment when using membranes. The PIs plan to develop novel bio-fouling resistant membranes (BRM) loaded with copper and silver ions, and to study the mechanisms of bio-fouling as well as those that cause defects in polymer composite membranes. They will test harsh seawaters and study the membrane performance. The US and international PIs have complementary experiences in membrane development or testing, and water quality testing and analysis. There is a mechanism to move from the lab to larger scale testing but there are a few important questions that need to be resolved first before heading to scale-up. The PIs will develop initial results and collaborative interactions to enable them to submit a full proposal. This represents a "high risk-high reward" project. Broader impacts: This activity is to develop copper and silver doped membranes to test on variety of seawaters in Egypt and Jordan. The results from this work could have global impact and relevance. The proposed BRM will aid in wastewater clean-up in the US, as well as being used to treat brackish water and seawater, globally. The project will fund 3 graduate students from the U.S. to spend up to 2 months in Egypt and Jordan conducting research. The activity can create opportunities for international collaborations in several areas such as research on membrane technologies, desalination and water/wastewater treatment. The research has potential for far outreach and to develop new information in bio-fouling mechanisms and membrane defect mechanisms. It is likely that this project will lead to the preparation and submission of full joint research proposals to NSF, journal publications, and development of preliminary data for a patentable membrane that could have significant long-term impact on water supply and the membrane industry. The scientists, all women, developed this proposal at a NSF sponsored meeting that was intended to foster collaboration amongst women faculty in the sciences and engineering.

1264039 1264001 1264103提案摘要：本项目旨在支持一项合作研究，包括托莱多大学的伊莎贝尔·埃斯科瓦尔博士和格鲁吉亚理工大学的龙舌兰酒哈里斯博士。以及罗得岛大学的Vinka Craver博士与约旦科技大学（JUST）的Muna Abu-Dalo博士和埃及国家研究中心（ENRC）的Elham El-Zanati博士合作。 他们将通过用纳米颗粒浸渍溶液来解决由于被拒绝的化学品和微生物而引起的膜生物污垢的减轻问题。随着世界各地人口的快速增长和发展，以及对清洁水的内在需求，必须处理微咸水和海水资源。两种领先的海水淡化技术是热技术和膜技术，特别是反渗透（RO）。 纳滤（NF）用于去除水源中的其他物质，也常用于水的脱盐。虽然RO和NF都可以生产饮用水，但RO去除了大部分溶质，这使得渗透水缺乏必需的营养素（例如钙，镁离子），并使营养素水平低于所需的世界卫生组织标准。因此，必须添加营养素（即营养化），使水恢复到饮用水的标准水平。 另一方面，NF方法去除较少的溶质，并且可以避免对水的矿化的需要。因此，它是发展中国家更需要的技术。 这项合作研究将解决这一问题，并将通过全面的实验分析和测试阐明生物污损的缓解。生物污垢预防领域的大多数研究和开发都集中在给水的预处理、改进的清洁溶液和清洁程序上。 该国际团队将开发抗生物污损（BRN）纳米复合膜，装载铜或银纳米颗粒，从合成到大规模生产。 Abu-Dalo博士和El-Zanati博士将描述水条件，Craver博士和Escobar博士将开发和描述拟议的膜，Harris博士将制造它们，Dalo博士和El-Zanati博士将测试膜，并在恶劣的微咸水环境中进行分析。知识优点：生物污损是使用膜进行水处理的一个重要问题。研究人员计划开发负载铜和银离子的新型抗生物污染膜（BRM），并研究生物污染的机理以及导致聚合物复合膜缺陷的机理。 他们将测试恶劣的海水并研究膜的性能。美国和国际PI在膜开发或测试以及水质测试和分析方面具有互补的经验。 有一种机制可以从实验室转移到更大规模的测试，但在扩大规模之前需要首先解决一些重要的问题。PI将开发初步结果和协作互动，使他们能够提交完整的提案。 这是一个“高风险、高回报”的项目。 更广泛的影响：这项活动是开发掺铜和银的薄膜，在埃及和约旦的各种海水中进行测试。 这项工作的结果可能具有全球影响和相关性。拟议中的BRM将有助于美国的废水清理，并用于处理全球的苦咸水和海水。该项目将资助3名来自美国的研究生在埃及和约旦进行长达2个月的研究。该活动可为膜技术研究、海水淡化和水/废水处理等若干领域的国际合作创造机会。该研究具有广泛的推广潜力，并在生物污染机制和膜缺陷机制方面开发新的信息。该项目可能会导致准备和向NSF提交完整的联合研究提案，期刊出版物，以及开发可专利膜的初步数据，这可能对供水和膜行业产生重大的长期影响。这些科学家都是女性，他们在NSF主办的一次会议上提出了这一建议，该会议旨在促进科学和工程领域女教师之间的合作。