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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Agnieszka Didyk-Mucha1, Izabela Polowczyk1, Zygmunt Sadowski1 and Jan Kudelko2
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DOI:10.17265/2159-5348/2015.02.001
Affiliation(s)
1. Chemical Engineering Department, Wroclaw University of Technology, Wroclaw 50-370, Poland 2. Geoengineering, Mining and Geology Department, Wroclaw University of Technology, Wroclaw 50-370, Poland
ABSTRACT
This paper presents some results of zeta potential measurements performed into biosurfactant adsorption onto magnesite and serpentinite surface. Zeta potential and isoelectric point measurement of magnesite and serpentinite particles before and after interaction with biosurfactant broth solution and activator (nickel(II) ion solution) were carried out. The zeta potential results show that presence of biosurfactants changes both magnesite and serpentinite surface potential by physical adsorption which increases the hydrophobicity of mineral particles. Measurements of particles zeta potential in the presence of biosurfactant broth are relevant to the minerals flotation. Hallimod flotation response of magnesite and serpentinite as a function of collector concentration was investigated. Bioflotation test results show that at the presence of broth, the flotation separation of magnesite from serpentinite is possible.
KEYWORDS
Zeta potential, adsorption, bioflotation, biosurfactant, activation, serpentinite, magnesite.
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