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Title: Bioremediation of methyl orange from aqueous solutions using Oedogonium subplagiostomum AP1
Researcher: Alaguprathana M
Guide(s): Poonkothai M
Keywords: Bioremediation, methyl orange, RSM, dye uptake, decolourisation, phytotoxicity
University: Avinashilingam Deemed University For Women
Completed Date: 07/01/2019
Abstract: Algae are extensively used as biosorbent for the sorption of dyes, however decolourisation and newlinedye uptake of methyl orange by Oedogonium subplagiostomum AP1has not been explored. Various newlineprocess parameters namely dye concentration (100-900mg/L), biosorbent concentration (100- newline700mg/L), pH (2-11), temperature (20°C-60°C) and contact time (1-10 days) were optimized RSM. newlineDesorption and regeneration efficiency of the alga was recorded and column study was conducted in newlinethe laboratory. The adsorption isotherm, kinetic and thermodynamic studies were conducted. The newlinephysico-chemical parameters of treated methyl orange were analysed. Bioassay studies such as newlinephytotoxicity, zootoxicity, microbial toxicity and cytogenotoxicity were performed to evaluate the newlinetoxicity of the degraded metabolites of dye after decolourisation. newlineThe alga was identified as Oedogonium subplagiostomum AP1. The maximum decolourisation newlineand dye uptake of 97% and 120mg/g was observed under optimized conditions (Dye concentration: newline500mg/L, bisorbent concentration: 400mg/L, pH: 6, temperature: 30ºC and incubation time: 5 days). newlineAdsorption isotherm, kinetics and thermodynamic studies showed that a monolayer adsorption of dye newlineonto the biosorbent through chemisorption and exothermic process. The analytical studies confirmed newlinethe decolourisation of methyl orange by the accumulation of dyes onto the surface of the alga. The newlinetoxicity studies confirmed the treated methyl orange was non-toxic to flora, fauna and the micro flora. newlineAlgal compost provides an alternative for chemical fertilizer. The physical properties of the fabrics newlinedyed using algae treated water proved its utilization in textile industries. The physicochemical newlineparameters of treated effluent fall within the permissible limits. The molecular docking study confirms newlinethe possible interaction between the azoreductase and methyl orange. newlinei) Major objectives : newlineand#61623; To identify the alga for its potential in dye decolourisation. newlineand#61623; To study the kinetic behaviour of the dye using batch mode and Response Surface
Pagination: 235 p.
Appears in Departments:Department of Zoology

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01_title.pdfAttached File146.9 kBAdobe PDFView/Open
02_certificate.pdf432.44 kBAdobe PDFView/Open
03_acknowledgment.pdf154.29 kBAdobe PDFView/Open
04_content.pdf151.59 kBAdobe PDFView/Open
05_list of table,figures,plates and abbreviations.pdf190.85 kBAdobe PDFView/Open
06_chapter 1.pdf224.32 kBAdobe PDFView/Open
07_chapter 2.pdf385.15 kBAdobe PDFView/Open
08_chapter 3.pdf1.04 MBAdobe PDFView/Open
09_chapter 4.pdf4.56 MBAdobe PDFView/Open
10_chapter 5.pdf227.23 kBAdobe PDFView/Open
11_references.pdf512.67 kBAdobe PDFView/Open
12_appendices.pdf563.68 kBAdobe PDFView/Open

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