Conductive carbon-clay nanocomposites from petroleum oily sludge

被引：23
|
作者：
Andrade, Patricia Fernanda [1 ]
Azevedo, Thiago Figueiredo [1 ]
Gimenez, Iara F. [1 ]
Souza Filho, Antonio Gomes [2 ]
Barreto, Ledjane Silva [1 ]
机构：
[1] Univ Fed Sergipe, BR-49100000 Sao Cristovao, SE, Brazil
[2] Univ Fed Ceara, Dept Fis, BR-60450900 Fortaleza, Ceara, Brazil
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 167卷 / 1-3期
关键词：
Solid waste; Carbon; Clay; Composite; Impedance; ACTIVATED CARBON; WATER-TREATMENT; ADSORPTION; ADSORBENT;
D O I：
10.1016/j.jhazmat.2009.01.070
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
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. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：879 / 884
页数：6
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