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담수조건에서 미세플라스틱인 폴리에틸렌과 폴리프로필렌의 납 흡착특성
엄주현 ( Ju-hyun Eom ),서동철 ( Dong-cheol Seo ) 한국환경농학회 2018 한국환경농학회 학술대회집 Vol.2018 No.-
In the both marine and freshwater environments, microplastics and heavy metals such as Pb, Cd, Cr and Hg are considered a global threat to various marine and freshwater animals, and the interaction between these two pollutants are poorly understood. Microplastics such as polyethylene and polypropylene have received less attention in the freshwater environments than in the marine environments. The objective of this research was to investigate the Pb absorption capacity by microplastic polyethylene and polypropylene to estimate the Pb adsorption behavior by microplastic in freshwater ecosystems. The Pb adsorption characteristics by polyethylene and polypropylene were evaluated using both the Freundlich and Langmuir adsorption isotherm equations. Langmuir model for polyethylene and polypropylene provides a slightly better fit than the Freundlich model for Pb adsorption in all stages. The results demonstrate that the adsorption characteristic of Pb by polyethylene and polypropylene is mainly monolayer adsorption. The maximum Pb adsorption capacity of polyethylene was higher than that in polypropylene.