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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 15, No. 1, 2011, pp. 79-86
Bioline Code: ja11016
Full paper language: English
Document type: Research Article
Document available free of charge

Journal of Applied Sciences and Environmental Management, Vol. 15, No. 1, 2011, pp. 79-86

 en Evaluation of Microbial Systems for Biotreatment of Textile Waste Effluents in Nigeria: Biodecolourization and Biodegradation of textile Dye
Agarry, Samuel E. & Ajani, Ayobami O.

Abstract

The evaluation of some microbial species for the decolourization and degradation of textile dye has been investigated. Six microbial strains were isolated from soil contaminated with textile waste effluents using the spread plate technique and the isolates were identified as bacterial isolates ( Pseudomonas fluorescence check for this species in other resources , Pseudomonas nigificans check for this species in other resources , and Pseudomonas gellucidium check for this species in other resources ) and fungal isolates ( Aspergillus niger check for this species in other resources , Proteus morganii check for this species in other resources and Fusarium compacticum check for this species in other resources } based on gram staining, morphological and biochemical tests. They were evaluated for their capability to remove colour and degrade dye, reduce chemical oxygen demand (COD) and biological oxygen demand (BOD) levels of textile waste effluents. The results revealed that all the bacterial and fungal isolates have a good potential to remove colour and degrade dye, reduce the COD and BOD levels of the textile waste effluents with percent colour removal, COD and BOD reductions between 39 and 48%, 74 and 97% and 77 and 95%, respectively. Binary mixed culture of Pseudomonas fluorescence and Aspergillus niger was efficiently utilized for the removal of different initial concentration (10, 15, 20, 25 and 30 mg/l) of dye from textile waste effluents. It had a higher percent decolourization than individual isolates. The stirred tank bioreactor was found to be very effective for efficient biotreatment of textile waste effluents.

 
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