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자료유형
학술저널
저자정보
저널정보
대한미용학회 대한미용학회지 대한미용학회지 제13권 제1호
발행연도
2017.1
수록면
1 - 5 (5page)

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This paper examined various uses of human hair from the perspective of expanding its utilization as metal ion adsorbent. Activated carbon has been traditionally used as a good adsorbent for the removal of heavy metal ions. Its usefulness derives mainly from its large micropore and mesopore volumes and the resulting high surface area. However, activated carbon is relatively expensive. The adsorption studies on partially burnt hair (PBH) particles has not been studied until now. In this study, we reported that the selective adsorption of metal ions from aqueous solution was possible using PBH particles. The thermal oxidation treatment can significantly enhance the adsorption capacities of the hair sample. In SEM images, the formation of micropores indicate that the surface of PBH is different from the bulk of hairs in physicochemical properties. The porous morphology has wide surface area, and thus may be a driving force for metal ion adsorption of PBH. The formation of porous morphology may indebted to the part burning rather than the complete burning of the human hairs. Based on these results, it can be said that PBH particles could be used as potential adsorbent for the removal of some heavy metals. The selectivity sequence can be given as Ag+>Pb2+> Cu2+>Fe2+. The adsorptions are relatively low for Cu2+ and Fe2+, and high for Ag+ and Pb2+. We suggest that the sulfhydryl group of PBH particles could increase the adsorption capacity due to the formation of metal mercaptide. The author considered that the greater adsorption of Ag+ probably is due to its greater potential binding capacity and stability, specially of the Ag-S interaction, and also due to the greater electrostatic interaction between Ag+ and PBH particles. In conclusion, the PBH particles can be used as the effective adsorbents to remove heavy metals from aqueous solutions. These results could be applied to develop as an anti-pollution agent to prevent skin penetration of heavy metal ions in microscopic dust by adsorbing them.

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