Bacterial Cellulose-Polyaniline Porous Mat for Removal of Methyl Orange and Bacterial Pathogens from Potable Water

The present work establishes applicability of polyaniline coated bacterial cellulose (PANi@BC) porous mat for simultaneous removal of methyl orange (MO) dye and viable bacteria from potable water. The porous PANi@BC mat was synthesized by in-situ oxidative polymerization of aniline on the surface of...

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Bibliographic Details
Published in:Journal of polymers and the environment 2021-04, Vol.29 (4), p.1257-1270
Main Authors: Jahan, Kousar, Tyeb, Suhela, Kumar, Nitesh, Verma, Vivek
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Aniline
Antibacterial activity
Bacteria
Cellulose
Cellulose fibers
Chemistry
Chemistry and Materials Science
Coliforms
Drinking water
Dyes
E coli
Environmental Chemistry
Environmental Engineering/Biotechnology
Industrial Chemistry/Chemical Engineering
Materials Science
Original Paper
pH effects
Polyanilines
Polymer Sciences
Surface chemistry
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Summary:The present work establishes applicability of polyaniline coated bacterial cellulose (PANi@BC) porous mat for simultaneous removal of methyl orange (MO) dye and viable bacteria from potable water. The porous PANi@BC mat was synthesized by in-situ oxidative polymerization of aniline on the surface of bacterial cellulose (BC) fibres followed by lyophilisation. The adsorption efficiency of MO on PANi@BC adsorbent mat was investigated at neutral pH with respect to adsorbent (PANi@BC) dose, contact time, initial dye concentration and temperature. The adsorption of MO on polyaniline surface followed a pseudo-second-order kinetic profile (R 2  = 0.999). The monolayer adsorption capacities of MO, following Langmuir Isotherm model, were found to be 222, 271 and 293 (mg/g) at 293, 310 and 320 K, respectively at pH 7. PANi@BC mat also exhibited antibacterial activity against both Gram-positive ( Staphylococcus aureus ) and Gram-negative (Escherichia coli ) bacteria. Our results showed that 50 mg of PANi@BC mat could kill 10 6 bacteria completely and bring around fourfold reduction in 10 8 bacterial load.
ISSN:1566-2543
1572-8919
DOI:10.1007/s10924-020-01947-w