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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemical engineering
Decolorization and degradation of azo dye Methyl Red by an isolated Sphingomonas paucimobilis: Biotoxicity and metabolites characterization
Desalination, Volume 274, No. 1-3, Year 2011
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Description
Azo dyes are recalcitrant and refractory pollutants that constitute a significant burden on the environment. The report here is focused on the decolorization treatment of water soluble azo dye Methyl Red (MR). Sphingomonas paucimobilis, was isolated from the effluent treatment plant of a textile and dyeing industry (SITEX) located in KsarHellal, Tunisia. At shaking condition this strain showed 99.63% decolorization of a toxic azo dye MR (750. ppm) within 10. h in a Mineral Salt Medium (MSM) at 30 °C and pH 9. The degradation of MR was possible through a broad pH (3-11) and temperature (5-40 °C) range. Untreated dye at 750. mg/1 concentration showed 30% germination inhibition in Sorghum bicolor, whereas it was 55% in Triticum aestivum. There was no germination inhibition for both the plants by MR metabolites at 750. ppm concentration. The degradation products were characterized by UV-visible and Fourier Transform Infrared Spectroscopy (FTIR), their toxicity with respect to Artemia salina was evaluated. The scientific relevance of the paper: the azo dye MR (750. ppm) was decolorized by S. paucimobilis within 10. h at shaking condition in MSM. This organism could decolorize MR at wide pH and temperature ranges. © 2011 Elsevier B.V.
Authors & Co-Authors
Ayed, Lamia
Tunisia, Monastir
Faculté de Pharmacie de Monastir
Mahdhi, Abdelkarim Kaim
Tunisia, Monastir
Faculté de Pharmacie de Monastir
Charef, Abdelkrim
Tunisia, Soliman
Centre de Recherches et Des Technologies Des Eaux
Bakhrouf, Amina
Tunisia, Monastir
Faculté de Pharmacie de Monastir
Statistics
Citations: 228
Authors: 4
Affiliations: 2
Identifiers
Doi:
10.1016/j.desal.2011.02.024
ISSN:
00119164
Research Areas
Environmental
Study Locations
Tunisia