Application of Surface-Modified Natural Magnetite as a Magnetic Carrier for Microplastic Removal from Water DOI Open Access

Palot Srichonphaisarn,

Natatsawas Soonthornwiphat,

Pongsiri Julapong

et al.

Minerals, Journal Year: 2025, Volume and Issue: 15(4), P. 425 - 425

Published: April 18, 2025

This study investigates the modification and application of natural, micro-scale magnetite (Fe3O4)—an iron oxide mineral one most abundant ores in world—as a magnetic carrier for removing six common types microplastics (MPs) from water: polypropylene (PP), polyethylene (PE), acrylonitrile butadiene styrene (ABS), polystyrene (PS), terephthalate (PET), polyvinyl chloride (PVC). Hexadecyltrimethoxysilane (HDTMS) was employed as surfactant to modify naturally hydrophilic magnetite, transforming it into hydrophobic material. The characterization treated with HDTMS 0, 6, 12, 24, 48 h performed using scanning electron microscope energy-dispersive X-ray spectroscopy (SEM-EDS) Fourier transform infrared (FT-IR). results showed sorption on surface natural confirming successful modification. Carrier separation then remove PP, PE, ABS, PS, PET, PVC surface-modified, two size fractions: +38–75 µm (fine-sized) +75–150 (coarse-sized). Improved performance observed longer treatment while greater than 90% MP removal achieved fine-sized, magnetite. These suggest that enhanced heterogenous interactions between MPs via hydrophobic-hydrophobic interactions, leading efficient separation.

Language: Английский

Application of Surface-Modified Natural Magnetite as a Magnetic Carrier for Microplastic Removal from Water DOI Open Access

Palot Srichonphaisarn,

Natatsawas Soonthornwiphat,

Pongsiri Julapong

et al.

Minerals, Journal Year: 2025, Volume and Issue: 15(4), P. 425 - 425

Published: April 18, 2025

This study investigates the modification and application of natural, micro-scale magnetite (Fe3O4)—an iron oxide mineral one most abundant ores in world—as a magnetic carrier for removing six common types microplastics (MPs) from water: polypropylene (PP), polyethylene (PE), acrylonitrile butadiene styrene (ABS), polystyrene (PS), terephthalate (PET), polyvinyl chloride (PVC). Hexadecyltrimethoxysilane (HDTMS) was employed as surfactant to modify naturally hydrophilic magnetite, transforming it into hydrophobic material. The characterization treated with HDTMS 0, 6, 12, 24, 48 h performed using scanning electron microscope energy-dispersive X-ray spectroscopy (SEM-EDS) Fourier transform infrared (FT-IR). results showed sorption on surface natural confirming successful modification. Carrier separation then remove PP, PE, ABS, PS, PET, PVC surface-modified, two size fractions: +38–75 µm (fine-sized) +75–150 (coarse-sized). Improved performance observed longer treatment while greater than 90% MP removal achieved fine-sized, magnetite. These suggest that enhanced heterogenous interactions between MPs via hydrophobic-hydrophobic interactions, leading efficient separation.

Language: Английский

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