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

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: 0651794
• 负责人: Bruce Rittmann
• 金额: $ 42.5万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-04-15 至 2011-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0651794&HistoricalAwards=false
• 关键词: Intimate; Coupling; Photocatalysis; Biodegradation; Photocatalytic

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.

CBET-0651794亚利桑那州立大学Bruce Rittmann亚利桑那州立大学光催化与生物降解在光催化循环床生物膜反应器中的紧密耦合这项研究提出了一种创新的方法，在单级反应器中将光化学氧化与生物降解紧密地结合在一起，称为“光催化循环床生物膜反应器”或PCBBR，以处理难处理和有毒的有机化合物。PCBBR的创新之处在于使活性微生物生物量接近光化学氧化过程，从而使顽固的有机污染物通过生物降解和化学氧化的组合得到协同降解，但微生物仍然受到光化学氧化的负面影响的保护。这将通过建造反应器来实现，在大孔载体的外表面涂覆纳米TiO2光催化剂，并在载体的内部生长生物膜。将以允许扩大规模的方式确定影响绩效的因素。这项研究将包括一名研究生、博士后、本科生和一名高中实习生。