AI Article Synopsis
- - The study examines how Cephalosporium strain NCIM 1251 can break down polystyrene films that have been pre-treated with UV light, which adds oxygen molecules and alters their chemical structure.
- - Results showed a weight loss of about 20.62% in the UV-treated polystyrene after 8 weeks, with changes in pH and total dissolved solids linked to the biodegradation process.
- - Analysis techniques like FTIR, TGA, and SEM indicated that while UV treatment improved the thermal stability of pure polystyrene, its stability decreased after being incubated with the fungus, showcasing notable changes in its structure.
Article Abstract
The present study approaches the capability of Cephalosporium strain NCIM 1251 to degrade pre-treated polystyrene films. Polystyrene was initially treated with UV for the introduction of oxygen molecules in pure polystyrene samples. UV treatment inserts aliphatic ketones functional group in polystyrene whereas it created C-C stretching after chemical treatment in UV-treated polystyrene as analyzed by Fourier-transform infrared spectroscopy (FTIR). The gravimetric study confirmed a decline in the weight of the pre-treated polystyrene by 20.62 ± 1.47% after 8 weeks of the incubation period. pH, total dissolved solids (TDS), and conductivity of mineral salt media were correlated with the extent of biodegradation. Treatment with UV and acid increased the thermal stability of pure polystyrene, whereas thermal stability decreased in pre-treated polystyrene after incubation with Cephalosporium strain NCIM 1251 as studied by Thermogravimetric analysis (TGA). Scanning Electron Microscopy (SEM) analysis observed revisions in the morphology and surface patterns in pre-treated polystyrene after inoculation with Cephalosporium strain NCIM 1251. The observed findings suggest that the Cephalosporium strain NCIM 1251 could be efficient for the decomposition of pre-treated polystyrene.
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| http://dx.doi.org/10.1007/s00203-021-02228-3 | DOI Listing |
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