Iohexol Degradation by Biogenic Palladium Nanoparticles Hosted in Anaerobic Granular Sludge.
作者： Xiangchun Quan , Xin Zhang , Yue Sun , Jinbo Zhao
关键词: Formate 、 Reactivity (chemistry) 、 Electron donor 、 Chemistry 、 Nuclear chemistry 、 Catalysis 、 Reaction rate constant 、 Palladium 、 Iohexol 、 Iodide
摘要: To improve the degradation ability of anaerobic granular sludge (AGS) towards iodinated contrast media iohexol, biogenic nanoscale palladium (Pd) was formed in AGS via microbial reduction. The Pd hosted (Pd-AGS) used for iohexol degradation. effects electron donor, reaction medium, iodide ion fouling, and polymer embedding Pd-AGS on reactivity were investigated. Our results showed increased rate with a conversion constant by 86.3 folds compared to control. Various organic compounds investigated as donors initiate catalytic activity promotion achieved tested following order: formate > lactate ethanol glucose acetate. had high deionized water at mild pH, almost no under acidic (pH = 1.2) alkaline 11) conditions. presence ions medium inhibited because catalyst fouling. Embedding alginate, chitosan, or polyvinyl alcohol could prevent loss but it also retarded rate. Pd-AGS, combination AGS, provides novel strategy polluted wastewater. r.
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