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Chen P, Zhai J, Sun W, et al. Adsorption mechanism of lead ions at ilmenite/water interface and its influence on ilmenite flotability[J]. Journal of Industrial and Engineering Chemistry, 2017.

2017-07-24 17:45   审核人:   (浏览次数)

 

Abstract

In order to get further understanding of lead ions adsorption onto ilmenite surface, zeta potential analysis, adsorption density calculation, FT-IR and XPS analysis were employed. The results showed that the adsorption of lead ions onto ilmenite surface was a chemically dominating process. Lead species could interact with iron-hydroxyl complex compounds to form a Fe–O–Pb complex. The hydrophobic complex of Pb(OL)2 was also observed. Iron and adsorbed lead ions on ilmenite surface served as the main active-sites via chemisorption with oleate species. Introducing lead ions, as a surface modification means, can efficiently improve ilmenite flotability.

Keywords

Adsorption
Lead ions
Ilmenite
Surface modification

http://www.sciencedirect.com/science/article/pii/S1226086X17302356

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