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Conditions for Horseradish Peroxidase (HRP) catalyzed oxidative degradation of bisphenol A (BPA) in wastewater were investigated in this research. The optimal pH and temperature for the oxidation of BPA catalyzed by HRP were pH 9.0 and 25°C respectively. The actual stochiometry for the complete conversion of BPA was [H2O2]/[BPA] molar ratio of 1.5, higher than theoretic stochiometry of 0.5 for this...
Environmental risk is ascribed to contamination level as well as the potential decontamination capability of the contaminated sites. In some cases, natural attenuation by biodegradation may dominate self cleanup as microorganisms always try to survive, which reduces risk to human health. Conventional assessment is based on sequential monitoring of concentrations, which requires a large number of samples...
Degradation Pentachloronitrobenzene of industrial wastewater by white rot fungi was researched. The experimental conditions were optimized by L9(34) orthogonal test. The experimental result shows that the biochemical temperature is the most important factor, and then are biochemical time and pH and concentration of CODcr of water sample at inlet respectively, its best experimental condition is that...
Ammonia nitrogen is a common pollutant in water environment, and the nitrogen removal techniques have been studied extensively. In this work, a new kind of annular reactor was developed and the photocatalysis with suspended TiO2 was used for degradation of ammonia nitrogen. The effects of experimental conditions on the ammonia degradation efficiency and the photocatalytic products in the effluent...
Water pollution in rural areas or small cities has been a key environmental problem in China. Limited by underdeveloped economy and poor technical capacity, cost- effective and easily operable treatment technologies are highly needed at present, especially for China's western small mountain cities and/or rural areas. An Anaerobic Sequencing Batch Biofilm Reactor (ASBBR) was developed and a bench-scale...
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