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

亚利桑那州立大学光催化循环床生物膜反应器中光催化和生物降解的密切耦合本研究提出了一种创新的方法，将光化学氧化与生物降解密切耦合在单级反应器中，称为“光催化循环床生物膜反应器”或PCBBR，以处理难降解和有毒有机化合物。PCBBR的创新涉及将活性微生物生物量与光化学氧化过程相结合，从而通过生物降解和化学氧化的组合协同降解难降解的有机污染物，但微生物仍然免受光化学氧化的负面影响。这将通过构建反应器来实现，反应器的外表面涂有纳米级TiO2光催化剂的大孔载体，生物膜将在载体内部生长。将以允许扩大规模的方式确定影响业绩的因素。该研究将包括一名研究生、博士后、本科生和一名高中实习生。

CBET-0651794Bruce RittmannArizona State UniversityIntimate Coupling of Photocatalysis and Biodegradation in aPhotocatalytic Circulating-Bed Biofilm ReactorThis research advances an innovative approach to intimately couple photochemical oxidation with biological degradation in a single-stage reactor, called a 'photo-catalytic circulating-bed biofilm reactor' or PCBBR, to treat recalcitrant and toxic organic compounds. The innovation of the PCBBR involves bringing the active microbial biomass into proximity with photochemical oxidation processes so that recalcitrant organic contaminants are degraded synergistically by a combination of biodegradation and chemical oxidation but the microorganisms still are protected from the negative effects of the photochemical oxidation. This will be achieved by constructing reactors with macro-porous carriers coated with nano-scale TiO2 photo-catalyst on their outer surface and biofilms will be grown in the interiors of the carriers. Factors influencing performance will be identified in a manner that will permit scale-up. The research will include a graduate student, post-doc, undergraduates, and a high school intern.