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

0402510 Rittmann使用AOP将顽固性化合物部分转化为可生物降解的产品，允许具有成本效益和强大的整体处理方案。先前对集成系统的研究主要集中在顺序耦合系统，或在不同阶段进行生物和化学处理的系统。然而，由于AOP反应快速且不分青红皂白，因此它们产生的产物范围很大，包括那些氧化过度、本身有毒或无法进行生物降解的产物。因此，如果可以采用单阶段或密切耦合的处理系统，则可以改进集成。如果细菌接近高级氧化，生物可降解的产物可以在产生时从溶液中去除，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，因为用于高级氧化的反应物对细菌有严重的毒性。提出的研究将研究一种新的光生物系统，可以实现理想的亲密耦合，这是新兴的耦合化学-生物处理领域中一个真正独特和未经测试的概念。

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.