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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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Nanotechnology has become one of the fastest developing technologies and recently applied to a variety of industries. Thus, increasing number of nano materials including various nanoparticles would be discharged into wastewater and consequently entering a biological wastewater treatment process. However, the impact of the nano particles on biological wastewater treatment has not been estimated intensively. In this research, we investigated the effect of silica nanoparticle on the oxygen uptake rates (OURs) of activated sludge used in a conventional wastewater treatment process. The inhibition (%) values were estimated from the results of OURs experiments for the silica nanoparticles with various sizes of 10-15, 45-50, and 70-100 nm and concentrations of 50, 250, and 500 ppm. As results, the inhibition value was increased as the size of silica nano particles decreased and the injected concentration increased. The maximum inhibition value was investigated as 37.4 % for the silica nanoparticles with the size of 45-50 nm and concentration of 50 ppm. Additionally, the effect of size and concentration on the inhibition should be considered cautiously in case that the aggregation of particles occurred seriously so that the size of individual particles was increased in aquatic solution.
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참고문헌 (16)
참고문헌 신청
Barber, D. S / 2009 / Sources, fate and effects of engineered nanomaterials in the aquatic environment / John Wiley & Sons Ltd
Brar, S. K / 2010 / Engineered nanoparticles in wastewater and wastewater sludge - Evidence and impacts / Waste Management 30(3):504~520
Chang, M. R / 2007 / Nanoparticles in wastewater from a science-based industrial park - Coagulation using polyaluminum chloride / Journal of Environmental Management 85(4):1009~1014
Choi, O / 2008 / Size dependent and reactive oxygen species related nanosilver toxicity to nitrifying bacteria / Environ. Sci. Technol 42:4583~4588
Dobbs, R.A / 1989 / Sorption of toxic organic compounds on wastewater solids: correlation with fundamental properties / Environ. Sci. Technol 23(9):1092~1097
Brar, S. K / 2010 / Engineered nanoparticles in wastewater and wastewater sludge - Evidence and impacts / Waste Management 30(3):504~520
Chang, M. R / 2007 / Nanoparticles in wastewater from a science-based industrial park - Coagulation using polyaluminum chloride / Journal of Environmental Management 85(4):1009~1014
Choi, O / 2008 / Size dependent and reactive oxygen species related nanosilver toxicity to nitrifying bacteria / Environ. Sci. Technol 42:4583~4588
Dobbs, R.A / 1989 / Sorption of toxic organic compounds on wastewater solids: correlation with fundamental properties / Environ. Sci. Technol 23(9):1092~1097
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