Surface chemistry fundamentals of biosorption of Rhodococcus opacus and its effect in calcite and magnesite flotation

Ana Elisa C. Botero; Maurício Leonardo Torem; Luciana Maria S. de Mesquita

doi:10.1016/j.mineng.2007.08.019

Surface chemistry fundamentals of biosorption of Rhodococcus opacus and its effect in calcite and magnesite flotation

Ana Elisa C. Botero
, Maurício Leonardo Torem
, Luciana Maria S. de Mesquita

Research output: Contribution to scientific journal › Article in an indexed scientific journal › peer-review

88 Scopus citations

Abstract

The affinity of Rhodococcus opacus cells for calcite and magnesite surfaces has been studied in order to evaluate its application as a flotation collector. The surface properties of minerals and R. opacus were characterized using infrared techniques. The mineral spectrums, before and after the bacterial interaction, indicated a mineral surface interaction with the R. opacus cell wall. The results were compared with the zeta potential curves as a function of the pH. The cell wall composition of R. opacus was characterized and the R. opacus hydrophobicity was either evaluated with contact angle measurements. The interfacial tension components were calculated based on the van Oss and Fowkes equations. The obtained results were supported by DLVO and X-DLVO theories for selected pH values. The results show the paramount innovation that R. opacus presents as a biocollector and its possible application in the mineral flotation industry.

Original language	English
Pages (from-to)	83-92
Number of pages	10
Journal	Minerals Engineering
Volume	21
Issue number	1
DOIs	https://doi.org/10.1016/j.mineng.2007.08.019
State	Published - Jan 2008

Bibliographical note

Funding Information:
The authors acknowledge Professor José Farias de Oliveira, UFRJ and Professor Maria Isabel Paes da Silva, PUC-Rio for their support on the FTIR and contact angle experiments and CNPq, CAPES and FAPERJ for the financial support.

Keywords

Adsorption
Bioflotation
DLVO and X-DLVO theory
Industrial minerals
Rhodococcus opacus

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10.1016/j.mineng.2007.08.019

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title = "Surface chemistry fundamentals of biosorption of Rhodococcus opacus and its effect in calcite and magnesite flotation",

abstract = "The affinity of Rhodococcus opacus cells for calcite and magnesite surfaces has been studied in order to evaluate its application as a flotation collector. The surface properties of minerals and R. opacus were characterized using infrared techniques. The mineral spectrums, before and after the bacterial interaction, indicated a mineral surface interaction with the R. opacus cell wall. The results were compared with the zeta potential curves as a function of the pH. The cell wall composition of R. opacus was characterized and the R. opacus hydrophobicity was either evaluated with contact angle measurements. The interfacial tension components were calculated based on the van Oss and Fowkes equations. The obtained results were supported by DLVO and X-DLVO theories for selected pH values. The results show the paramount innovation that R. opacus presents as a biocollector and its possible application in the mineral flotation industry.",

keywords = "Adsorption, Bioflotation, DLVO and X-DLVO theory, Industrial minerals, Rhodococcus opacus",

author = "Botero, \{Ana Elisa C.\} and Torem, \{Maur{\'i}cio Leonardo\} and \{de Mesquita\}, \{Luciana Maria S.\}",

note = "Funding Information: The authors acknowledge Professor Jos{\'e} Farias de Oliveira, UFRJ and Professor Maria Isabel Paes da Silva, PUC-Rio for their support on the FTIR and contact angle experiments and CNPq, CAPES and FAPERJ for the financial support.",

year = "2008",

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doi = "10.1016/j.mineng.2007.08.019",

language = "Ingl{\'e}s",

volume = "21",

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journal = "Minerals Engineering",

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Surface chemistry fundamentals of biosorption of Rhodococcus opacus and its effect in calcite and magnesite flotation. / Botero, Ana Elisa C.; Torem, Maurício Leonardo; de Mesquita, Luciana Maria S.
In: Minerals Engineering, Vol. 21, No. 1, 01.2008, p. 83-92.

Research output: Contribution to scientific journal › Article in an indexed scientific journal › peer-review

TY - JOUR

T1 - Surface chemistry fundamentals of biosorption of Rhodococcus opacus and its effect in calcite and magnesite flotation

AU - Botero, Ana Elisa C.

AU - Torem, Maurício Leonardo

AU - de Mesquita, Luciana Maria S.

N1 - Funding Information: The authors acknowledge Professor José Farias de Oliveira, UFRJ and Professor Maria Isabel Paes da Silva, PUC-Rio for their support on the FTIR and contact angle experiments and CNPq, CAPES and FAPERJ for the financial support.

PY - 2008/1

Y1 - 2008/1

N2 - The affinity of Rhodococcus opacus cells for calcite and magnesite surfaces has been studied in order to evaluate its application as a flotation collector. The surface properties of minerals and R. opacus were characterized using infrared techniques. The mineral spectrums, before and after the bacterial interaction, indicated a mineral surface interaction with the R. opacus cell wall. The results were compared with the zeta potential curves as a function of the pH. The cell wall composition of R. opacus was characterized and the R. opacus hydrophobicity was either evaluated with contact angle measurements. The interfacial tension components were calculated based on the van Oss and Fowkes equations. The obtained results were supported by DLVO and X-DLVO theories for selected pH values. The results show the paramount innovation that R. opacus presents as a biocollector and its possible application in the mineral flotation industry.

AB - The affinity of Rhodococcus opacus cells for calcite and magnesite surfaces has been studied in order to evaluate its application as a flotation collector. The surface properties of minerals and R. opacus were characterized using infrared techniques. The mineral spectrums, before and after the bacterial interaction, indicated a mineral surface interaction with the R. opacus cell wall. The results were compared with the zeta potential curves as a function of the pH. The cell wall composition of R. opacus was characterized and the R. opacus hydrophobicity was either evaluated with contact angle measurements. The interfacial tension components were calculated based on the van Oss and Fowkes equations. The obtained results were supported by DLVO and X-DLVO theories for selected pH values. The results show the paramount innovation that R. opacus presents as a biocollector and its possible application in the mineral flotation industry.

KW - Adsorption

KW - Bioflotation

KW - DLVO and X-DLVO theory

KW - Industrial minerals

KW - Rhodococcus opacus

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U2 - 10.1016/j.mineng.2007.08.019

DO - 10.1016/j.mineng.2007.08.019

M3 - Artículo en revista científica indexada

AN - SCOPUS:36549065766

SN - 0892-6875

VL - 21

SP - 83

EP - 92

JO - Minerals Engineering

JF - Minerals Engineering

IS - 1

ER -

Surface chemistry fundamentals of biosorption of Rhodococcus opacus and its effect in calcite and magnesite flotation

Abstract

Bibliographical note

Keywords

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