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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/14703
Title: Effectual bio-decolourization of anthraquinone dye reactive blue-19 containing wastewater by Bacillus cohnii LAP217: process optimization
Authors: Mishra S.
Maiti, Abhijit
Published in: Bioremediation Journal
Abstract: The Colored wastewaters produced from textile industries are enriched with toxic reactive dyes that cause serious biotic risk and ecological disturbances. The present study aims to decolourize an anthraquinone reactive blue-19 dye from aqueous solution by Bacillus cohnii LAP217. The selection of influential process parameters and optimization of process condition is performed using two-point factorial analysis and response surface method, respectively. The results reveal that the decolourization of dye is positively influenced by supplementation of di-sodium hydrogen phosphate (coefficient estimate: 7.4). The bacterium has exhibited 87.3 ± 0.4% decolourization of initial dye concentration 50 mg/L during the model validation through confirmatory experiment analysis, which has satisfactory correlation with model predicted response. However, the initial chromate concentration >50 mg/L in the medium have negative influence on performance of system by reducing the dye decolourization response below <70%, under similar process condition. Colored bacterial mass is obtained after the centrifugation of treated dye solution and a significant change in the UV-visible absorption peak is observed between raw and treated dye solution, which confirms the bio-accumulation of reactive blue-19 dye. The bacteria could exhibit significant American dyes manufactures institutes (ADMI) value reduction percentage of 79.84% during treatment of real wastewater. © 2019, © 2019 Taylor & Francis Group, LLC.
Citation: Bioremediation Journal (2020), 24(1): 1-20
URI: https://doi.org/10.1080/10889868.2019.1671793
http://repository.iitr.ac.in/handle/123456789/14703
Issue Date: 2020
Publisher: Taylor and Francis Inc.
Keywords: anthraquinone
bacteria
Bioremediation
optimization
textile dye
ISSN: 10889868
Author Scopus IDs: 55353346500
23994098600
Author Affiliations: Mishra, S., Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur, Uttar Pradesh 247001, India
Maiti, A., Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur, Uttar Pradesh 247001, India
Funding Details: The Authors acknowledges the financial support from Ministry of Human Resource Development (MHRD), Government of India, for student scholarship.
Corresponding Author: Mishra, S.; Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur Campus, India; email: saurabhmishra20057@gmail.com
Appears in Collections:Journal Publications [PE]

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