SGER: Intimate Coupling of Photocatalysis and Biodegradation in a Novel Photocatalytic Circulating-Bed Biofilm Reactor

SGER：新型光催化循环床生物膜反应器中光催化和生物降解的紧密耦合

• 批准号: 0402510
• 负责人: Bruce Rittmann
• 金额: $ 8.46万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-02-15 至 2005-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0402510&HistoricalAwards=false
• 关键词: SGER; Intimate; Coupling; Photocatalysis; Biodegradation

0402510 Rittmann Using an AOP to partially transform recalcitrant compounds into biodegradable products allows for a cost-effective and robust overall treatment scheme. Prior research into integrated systems has focused on sequentially coupled systems, or those that have the biological and chemical treatments in separate stages. However, because AOP reactions are rapid and indiscriminate, they produce a large range of products, including those that are too oxidized, toxic themselves, or unavailable for biodegradation. Thus, integration could be improved if a single- stage -- or intimately coupled -- treatment system could be employed. If the bacteria were in close proximity to advanced oxidation, biodegradable products could be removed from solution as they are produced, focusing the chemical oxidant only on the recalcitrant compounds. In the past, intimate coupling has seemed impossible, because the reactants used in advanced oxidation are severely toxic to bacteria. The proposed research will investigate a novel photo-bio system that can achieve the ideal of intimate coupling, a truly unique and untested concept within the emerging field of coupled chemical-biological treatment.

0402510 Rittmann使用AOP将顽固化合物部分转化为可生物降解的产品，从而实现了具有成本效益和强大的整体处理方案。以前对集成系统的研究主要集中在顺序耦合系统，即那些在不同阶段进行生物和化学处理的系统。然而，由于AOP反应迅速且不分青红皂白，它们会产生大量产品，包括那些过于氧化、本身有毒或无法生物降解的产品。因此，如果能够采用单级--或紧密耦合--处理系统，则一体化程度可以得到改善。如果细菌非常接近高级氧化，可生物降解的产品可以在产生时从溶液中移除，将化学氧化剂只集中在顽固的化合物上。在过去，紧密耦合似乎是不可能的，因为高级氧化中使用的反应物对细菌有严重的毒性。这项拟议的研究将探索一种新的光生物系统，它可以实现亲密耦合的理想，这是一个在新兴的化学-生物治疗领域中真正独特且未经测试的概念。