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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/14833
Title: Process optimization for effective bio-decolourization of methyl orange by Pseudomonas aeruginosa 23N1 using chemometric methodology
Authors: Mishra S.
Maiti, Abhijit
Published in: Canadian Journal of Chemical Engineering
Abstract: Development of low-cost and efficient treatment processes to remove dyes from dye-laden industrial wastewaters is currently an important topic of research. This study aims to investigate the bio-decolouration of methyl orange (MO) dye by Pseudomonas aeruginosa 23N1 and to optimize the process parameters for efficient removal of MO. The regular two-level factorial analysis technique is used to screen out the operational factors and to select their upper and lower limits for further optimization using central composite design (CCD). The result revealed that the peptone, yeast extract, and salt are the vital nutrients required by the bacteria to achieve high dye decolourization. Analysis of variance (ANOVA) in CCD indicates (correlation coefficient (R2) as 0.999 with predicted Rpre2 = 0.996 and adjusted Radj2 = 0.998) a strong correlation between the predicted response and the experimental response under identical experimental conditions. ANOVA in CCD exhibits high positive coefficients of estimate, 21.86 and 17.75, for dye and yeast extract concentration, respectively, suggests their major influences on decolourization performance. Higher decolourization is achieved at higher initial dye concentration due to the utilization of dye molecules as a preferable food supplement for bacteria. Model validation analyses show 98.23 ±0.4 %, and 98.60 ±0.5 % decolourization for initial 50 and 150 mg/L dye solution, respectively, which are in agreement with the model predicted dye decolourization percentages of 98.44 and 98.34 %, respectively. The disappearance of the maximum absorption peak of the MO dye in the UV-visible spectra indicates that decolourization of dye is either through the bioaccumulation or biodegradation mechanism. © 2018 Canadian Society for Chemical Engineering
Citation: Canadian Journal of Chemical Engineering (2019), 97(S1): 1340-1351
URI: https://doi.org/10.1002/cjce.23410
http://repository.iitr.ac.in/handle/123456789/14833
Issue Date: 2019
Publisher: Wiley-Liss Inc.
Keywords: bioremediation
dye removal
treatment of textile wastewater
wastewater treatment
ISSN: 84034
Author Scopus IDs: 55353346500
23994098600
Author Affiliations: Mishra, S., Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, Uttar Pradesh 247001, India
Maiti, A., Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, Uttar Pradesh 247001, India
Funding Details: The authors acknowledge the financial support from the Ministry of Human Resource Development (MHRD), Government of India, for the student scholarship and funding support (IMPRINT scheme, Project number: 6125) in addition to the Ministry of Urban Development, New Delhi, India.
Corresponding Author: Maiti, A.; Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur CampusIndia; email: mabhifpt@iitr.ac.in
Appears in Collections:Journal Publications [PE]

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