• Environmental Analysis Health and Toxicology
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• 제29권
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• pp.15.1-15.7
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• 2014

Objectives This paper tried to review a recent research trend for the environmental exposure of engineered nanomaterials (ENMs) and its removal efficiency in the nanowaste treatment plants. Methods The studies on the predicted environmental concentrations (PEC) of ENMs obtained by exposure modeling and treatment (or removal) efficiency in nanowaste treatment facilities, such as wastewater treatment plant (WTP) and waste incineration plant (WIP) were investigated. The studies on the landfill of nanowastes also were investigated. Results The Swiss Federal Laboratories for Materials Science and Technology group has led the way in developing methods for estimating ENM production and emissions. The PEC values are available for surface water, wastewater treatment plant effluents, biosolids, sediments, soils, and air. Based on the PEC modeling, the major routes for the environmental exposure of the ENMs were found as WTP effluents/sludge. The ENMs entered in the WTP were 90-99% removed and accumulated in the activated sludge and sludge cake. Additionally, the waste ash released from the WIP contain ENMs. Ultimately, landfills are the likely final destination of the disposed sludge or discarded ENMs products. Conclusions Although the removal efficiency of the ENMs using nanowaste treatment facilities is acceptable, the ENMs were accumulated on the sludge and then finally moved to the landfill. Therefore, the monitoring for the ENMs in the environment where the WTP effluent is discharged or biomass disposed is required to increase our knowledge on the fate and transport of the ENMs and to prevent the unintentional exposure (release) in the environment.

• 청정기술
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• 제18권3호
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• pp.250-258
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• 2012

최근 나노기술의 급격한 발전은 산업 및 바이오의약 등 다양한 분야에 새로운 활용 가능성을 제시하고 있다. 그러나 나노물질과 나노소비재의 연간 생산량이 증가하고 있어서, 의도하지 않은 환경 노출이 야기되고 있다. 따라서 지속적인 나노기술의 발전을 위해서도 나노폐기물에 관한 효과적인 관리가 필요하다. 현재까지는 나노폐기물을 효율적으로 처리할 수 있는 기존의 처리시설이 없는 실정이다. 이에 본 총설에서는 몇 가지 주제에 관하여 기술하고자 한다. 국내외의 나노물질 및 나노소비재 현황을 파악하고, 나노폐기물의 정의와 주요 발생원이 무엇인지 파악하였다. 또한 기존의 폐기물 처리시설로 나노 폐기물을 처리 가능한지를 살피고, 개발되고 있는 새로운 처리법을 조사하였다. 마지막으로 나노물질에 관한 환경 규제를 거론하고, 나노폐기물에 관한 책임 있는 관리에 관한 새로운 나노폐기물 패러다임을 제시하고자 하였다.