Reductive Mechanisms in Manganese-Catalyzed Fenton-Like Reactions: Pollution Prevention and Source Control Applications

0001354 本研究的目的是了解氧化锰催化的类芬顿反应的机理以及这些反应发生的条件。 初步结果表明，氧化锰催化剂可以产生还原剂与低至0.0006 M（20毫克/升）的过氧化氢，一千倍低于铁催化系统中所需的浓度，潜在地提供了一个更化学计量有效和经济的系统，用于增强解吸和转化的有机污染物产生的工业和污染的网站。 研究的具体目标包括调查的过程条件，促进锰氧化物催化的Fenton反应的还原剂的产生;确定还原剂的物种;调查污染物转化途径和矿化的潜力;和评估从土壤催化分解过氧化氢和他们的能力，解吸污染物从土壤和污泥的瞬态氧物种的产生。 这项研究的结果预计将提供更有效和更经济的方法，用于从污泥和土壤中置换和处理工业污染物，通过减少工艺用水和污泥的体积以及清理污染场地的源区来促进有效的污染预防。

0001354 Watts The objective of this research is to understand the mechanisms of manganese oxide-catalyzed Fenton-like reactions and the conditions under which these reactions occur. Preliminary results have shown that manganese oxide catalysts may produce reductants with as low as 0.0006 M (20 mg/L) hydrogen peroxide, one thousand times less than the concentration required in iron-catalyzed systems, potentially providing a more stoichiometrically efficient and economical system for the enhanced desorption and transformation of organic contaminants generated by industry and present at contaminated sites. Specific objectives of the research include investigating process conditions that promote the generation of reductants in manganese oxide-catalyzed Fenton-like reactions; identifying the reductant species; investigating contaminant transformation pathways and potential for mineralization; and evaluating the generation of transient oxygen species from soil-catalyzed decomposition of hydrogen peroxide and their ability to desorb contaminants from soils and sludges. The results of this research are expected to provide more effective and economical processes for the displacement and treatment of industrial contaminants from sludges and soils, promoting effective pollution prevention through volume reduction of process water and sludges and cleanup of source areas at contaminated sites.***