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Descripción
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| Malachite green (MG) is a basic dye widely used to colour wool, silk, cotton, jute, leather and paper. Also, malachite green has been extensively used all over the world in the aquaculture industry to treat parasites, fungal and bacterial infections in fish and fish eggs1 (Alderman, 1985). However, many adverse effects could be produced from the consumption of malachite green due to its genotoxic and carcinogenic effects2. Adsorption on activated carbon is one of the most effective methods for the removal of different dyes and organic compounds from aqueous solutions. Due to the high cost of commercial activated carbons, many efforts have been focused on low cost carbon-based adsorbents production from pyrolysis of waste materials such as sewage sludges3 agricultural-by products or other organic residues. The main objective of this work is to study the removal of malachite green by carbon-based adsorbents obtained form pyrolysis of two kinds of paper industry waste materials: one de-inking paper sludge from paper press manufacturing (DPS) and other organic sludge from virgin pulp mill (VPM). Carbon-based adsorbents were used in the removal of malachite green from water. Malachite green standard solutions from 10 to 4000 mg L-1 were prepared. To evaluate metal adsorption, 20 mL of each solution were mixed with 0.05 g of carbon-based absorbent and stirred during 2 hour at 300 rpm. After this time, solutions were filtrated to separate the suspension of carbon particles and the malachite green final concentration was evaluated by spectrophotometric analysis. Results shown that MG removal were highest for HP carbon-based adsorbent. Thermal analysis (TG, dTG and DTA) was used for the study of malachite green desorption from carbon-based adsorbents. | |
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Internacional
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Si |
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Nombre congreso
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Medicta 2009 |
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Tipo de participación
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960 |
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Lugar del congreso
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Marsella |
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Revisores
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Si |
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ISBN o ISSN
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1388-6150 |
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DOI
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10.1007/s10973-010-0681-4 |
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Fecha inicio congreso
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15/06/2009 |
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Fecha fin congreso
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18/06/2009 |
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Desde la página
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993 |
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Hasta la página
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998 |
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Título de las actas
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MEDICTA2009 Special Issue |