The preliminary investigation on the microplastic removal using column flotation: effects of kerosene on the floatability of microplastics

Abstract

Abstract Microplastics (MPs), 1 to 5000 µm plastics particle, present grave environmental challenges due to their wide distribution in water and difficulty of removal due to their small size. As these particles persist in aquatic ecosystems, effective removal methods are urgently needed. The small size, low density, and high hydrophobicity of MPs not only facilitate their spread but also enhance their potential toxicity. MPs can adsorb toxic compounds and heavy metals, posing risks to both humans and wildlife through ingestion and inhalation. According to the properties of MPs, column flotation, a surface-based separation technique suitable for fine particles, might have a potential to remove MPs from contaminated water and to achieve the United Nation’s Sustainable Development Goals (UN-SDGs) #Goal14 “Life below Water”. In this study, the effects of kerosene dosage on the floatability of microplastics in column flotation were preliminarily investigated. The result showed that the kerosene could enhance the floatability and density of MPs also show significant effects on removal rate.