Conductive carbon–clay nanocomposites from petroleum oily sludge

Oily sludge samples formed in water–oil separation tanks from a petroleum industry were collected, characterized and heat-treated at different temperatures, in order to yield carbon–clay composites. EDX microanalysis, XRD and FTIR data revealed that before carbonization the oily sludge was formed ma...

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Published in:Journal of hazardous materials 2009-08, Vol.167 (1), p.879-884
Main Authors: Andrade, Patricia Fernanda, Azevedo, Thiago Figueiredo, Gimenez, Iara F., Filho, Antonio Gomes Souza, Barreto, Ledjane Silva
Format: Article
Language:English
Subjects:
Aluminum Silicates
Applied sciences
Carbon
Clay
Composite
Electric Conductivity
Exact sciences and technology
Hot Temperature
Impedance
Industrial Waste
Minerals - analysis
Nanocomposites - chemistry
Petroleum
Pollution
Semiconductors
Sewage - chemistry
Solid waste
Spectrum Analysis
Temperature
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container_title Journal of hazardous materials
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creator Andrade, Patricia Fernanda
Azevedo, Thiago Figueiredo
Gimenez, Iara F.
Filho, Antonio Gomes Souza
Barreto, Ledjane Silva
description Oily sludge samples formed in water–oil separation tanks from a petroleum industry were collected, characterized and heat-treated at different temperatures, in order to yield carbon–clay composites. EDX microanalysis, XRD and FTIR data revealed that before carbonization the oily sludge was formed mainly by a mixture of quartz, montmorillonite, calcite, barite and oil residues. After carbonization, mineral phases present were mainly quartz, anorthite and gehlenite, in addition to graphitic and disordered carbon domains, according to XRD, Raman and TEM measurements. A preliminary evaluation of the electrical conductivity performed by Impedance Spectroscopy revealed that the composites formed are conductive, exhibiting conductivity values typical of semiconductors, in contrast to the precursor material.
doi_str_mv 10.1016/j.jhazmat.2009.01.070
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subjects Aluminum Silicates
Applied sciences
Carbon
Clay
Composite
Electric Conductivity
Exact sciences and technology
Hot Temperature
Impedance
Industrial Waste
Minerals - analysis
Nanocomposites - chemistry
Petroleum
Pollution
Semiconductors
Sewage - chemistry
Solid waste
Spectrum Analysis
Temperature
title Conductive carbon–clay nanocomposites from petroleum oily sludge
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