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Nanobarium Titanate As Supplement To Accelerate Plastic Waste Biodegradation By Indigenous Bacterial Consortia
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2009
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Indigenous Bacterial ConsortiaEngineeringBioplasticEnvironmental BiotechnologyPolymer ChainBiological Waste TreatmentBiodegradable PolymersBiodegradationPolymersSustainable PolymersChemical EngineeringBioremediationBiochemical EngineeringMicrobial EcologyPlastic DegradationEnvironmental MicrobiologyLow‐density PolyethyleneMicrobial ConsortiaWaste ManagementNanobarium TitanateDegradable PlasticEnvironmental EngineeringPolymer ScienceBiotechnologyMicrobiologyMedicineMicrobiological Degradation
Plastic waste biodegradation studies have seen several developmental phases from the discovery of potential microbial cultures, inclusion of photo‐oxidizable additives into the polymer chain, to the creation of starch‐embedded biodegradable plastics. The present study deals with the supplementation of nanobarium titanate (NBT) in the minimal broth in order to alter the growth‐profiles of the Low‐density polyethylene (LDPE) degrading consortia. The pro‐bacterial influence of the nanoparticles could be seen by substantial changes such as shortening of the lag phase and elongation of the exponential as well as stationary growth phases, respectively, which eventually increase the biodegradation efficiency. In‐vitro biodegradation studies revealed better dissolution of LDPE in the presence of NBT as compared to control. Significant shifting in λ‐max values was observed in the treated samples through UV‐Vis spectroscopy, while Fourier transform infrared spectroscopy (FTIR) and simultaneous thermogravimetric‐differential thermogravimetry‐differential thermal analysis (TG‐DTG‐DTA) further confirmed the breakage and formation of bonds in the polymer backbone. Therefore, this study suggests the implementation of NBT as nutritional additive for plastic waste management through bacterial growth acceleration.