Aspectos fundamentales de la flotación de hematita usando biosurfactante

Authors

DOI:

https://doi.org/10.33017/RevECIPeru2019.0008/

Keywords:

biosurfactant, flotation, hematite, Rhodococcus erythropolis

Abstract

The use of biosurfactants as flotation reagents represents a great technological potential and environmental acceptability in the mineral industry. Thus, this research studies the fundamental aspects of hematite flotation using the biosurfactant (BS) produced by Rhodococcus erythropolis. The BS was characterized by biochemical analysis and surface tension measurements, while the hematite-BS interaction was verified through measurements of zeta potential, contact angle measurements, adsorption experiments and FTIR spectra. The microflotation tests were performed in modified Hallimond tube and the maximum floatability value (99.87%) was found in pH 3 with a BS concentration of 100 mg/L for a flotation time of 1 min. The hematite floatability data were analyzed by polynomial regression to obtain a representative function of the microflotation, as well as their respective response surfaces. Finally, the results showed that the biosurfactant produced by Rhodococcus erythropolis can act as a collector bioreagent in the hematite flotation.

Author Biography

Carlos Alberto Castañeda Olivera, Pontificia Universidad Católica de Rio de Janeiro

I am a metallurgical engineer from the José Faustino Sánchez Carrión National University (UNJFSC), with a master's and doctoral degree in materials and chemical and metallurgical engineering from the Pontifical Catholic University of Rio de Janeiro (PUC-Rio). I have an MBA in project management from the IAG - PUC-Rio Business School. I gained experience in mineral processing, mainly in the processes of comminution, concentration and hydrometallurgy. During the last six years I have worked as a researcher and collaborating professor in the area of ​​mineral and environmental technology, having several scientific papers in conferences and publications in international journals. I am an ordinary member of the College of Engineers of Peru - Departmental Council of Lima, with the registration: No. 130267 and qualified as a CONCYTEC researcher, with the registration: No. 17089

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Published

2019-12-18

Issue

Vol. 16 No. 2 (2019)

Section

ARTÍCULOS ORIGINALES

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