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Polyvinyl alcohol–alginate ferrophoto gels for mercury(II) removal
Azura Hanis A. Rahman,Chee Loong Teo,Ani Idris,Effaliza Misran,Siti Asma’ Nikmat Leong 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.33 No.-
Maghemite (g-Fe2O3) nanoparticles were embedded in polyvinyl alcohol (PVA) and alginate matrix toproduce beads that could be easily recovered with external magnetic field after treating mercury, Hg(II)in aqueous solution. 96% of Hg(II) was removed in 4 h under sunlight, at pH 11 and 16% (v/v) ofphotocatalyst dosage. FESEM results revealed that the beads possessed significant superporositystructure that greatly supported mass transfer of Hg(II) inside the beads. The removal of Hg(II) fitted wellwith Langmuir–Hinshelwood (L–H) model exhibiting R2 (correlation coefficient) value of 0.9771. Thus,this study proved that it was feasible to treat Hg(II) solution with g-Fe2O3–PVA–alginate beads.