The Process Optimization During Biodegradation of Textile Dye in a Fixed-Bed Bioreactor Using Immobilized Shewanella putrefaciens: Response Surface Methodology and Artificial Neural Network Modeling.

Λεπτομέρειες βιβλιογραφικής εγγραφής
Τίτλος:	The Process Optimization During Biodegradation of Textile Dye in a Fixed-Bed Bioreactor Using Immobilized Shewanella putrefaciens: Response Surface Methodology and Artificial Neural Network Modeling.
Συγγραφείς:	Raj Y; Department of Chemical and Biochemical Engineering, IIT, Patna, Bihar, India., Meena PK; Department of Chemical and Biochemical Engineering, IIT, Patna, Bihar, India., Priyavart S; Department of Chemical and Biochemical Engineering, IIT, Patna, Bihar, India., Astha; Department of Chemical and Biochemical Engineering, IIT, Patna, Bihar, India., Das T; Department of Chemical Engineering, NIT, Rourkela, Odisha, India., Swain G; Department of Chemical and Biochemical Engineering, IIT, Patna, Bihar, India.
Πηγή:	Water environment research : a research publication of the Water Environment Federation [Water Environ Res] 2026 Aug; Vol. 98 (8), pp. e70516.
Τύπος έκδοσης:	Journal Article
Γλώσσα:	English
Στοιχεία περιοδικού:	Publisher: Wiley Subscription Services on behalf of The Water Environment Foundation Country of Publication: United States NLM ID: 9886167 Publication Model: Print Cited Medium: Internet ISSN: 1554-7531 (Electronic) Linking ISSN: 10614303 NLM ISO Abbreviation: Water Environ Res Subsets: MEDLINE
Imprint Name(s):	Publication: Hoboken, NJ : Wiley Subscription Services on behalf of The Water Environment Foundation Original Publication: Alexandria, VA : The Federation, c1992-
Ιατρικοί όροι (MeSH):	Bioreactors/microbiology , Shewanella putrefaciens/metabolism , Coloring Agents/metabolism , Water Pollutants, Chemical/metabolism , Rosaniline Dyes/metabolism , Neural Networks, Computer, Waste Disposal, Fluid/methods ; Cells, Immobilized/metabolism ; Biodegradation, Environmental
Περίληψη:	The textile wastewater containing refractory and tenacious synthetic dyes poses a greater threat and hazardous impact on both terrestrial animals and plants. A limited analysis has been reported on the utilization of Shewanella putrefaciens-immobilized PUF for malachite green (MG) dye in a lab-scale fixed-bed bioreactor (FBBR). Furthermore, the present study focused on the stability and performance of the FBBR for decontaminating a mixture of MG dye and municipal wastewater. In this direction, S. putrefaciens species entrapped in a polyurethane foam matrix coated with calcium alginate was utilized. The efficacy of the biocatalyst was investigated by optimizing process variables, including pH (4.0-9.0), retention time (RT) (6.0-18.0 h), and dye concentration (60-240 mg/L). The central composite design of the response surface methodology-based optimization tool predicts the maximum dye and chemical oxygen demand removal of 91.42% and 88.27%, respectively, at a pH of 7.10, RT of 18.0 h, and an initial dye concentration of 240 mg/L. Furthermore, the predictability of the process responses was explored using artificial neural network analysis, which provided higher reliability in predicting bioreactor behavior. The detection and disappearance of several peaks by Fourier transform infrared spectroscopy analysis indicated that a structural change of the chemical bond occurred during the biodegradation of MG dye. Notably, on a comparison note, the present technique offered a reasonable operational stability, biodegradability, and tolerance ability in dye environment. Therefore, the present technique may serve as a potential approach for future development of large-scale models to degrade and manage textile and municipal wastewater. (© 2026 Water Environment Federation.)
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Grant Information:	Indian Institute of Technology, Patna, India
Contributed Indexing:	Keywords: Shewanella putrefaciens; artificial neural network; central composite design; malachite green; polyurethane foam
Substance Nomenclature:	0 (Coloring Agents) 0 (Water Pollutants, Chemical) 12058M7ORO (malachite green) 0 (Rosaniline Dyes)
Entry Date(s):	Date Created: 20260801 Date Completed: 20260801 Latest Revision: 20260803
Update Code:	20260803
PubMed Central ID:	PMC13428297
DOI:	10.1002/wer.70516
PMID:	42538896
Βάση Δεδομένων:	MEDLINE

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ISSN:	1554-7531
DOI:	10.1002/wer.70516