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- Title
Methyl red biodegradation by novel halophilic Lactiplantibacillus plantarum SS-AU1 isolated from river Ganges.
- Authors
Sharma, A.; Singh, S. K.; Nath, A.; Sundaram, S.
- Abstract
Continuous excessive irrigation and industrial activities increase the salinity in the environment which poses a threat to the current technology used in the Methyl Red degradation process. Hence it is quite essential to use a microbe which can be used in very high saline conditions. The present study focuses on the kinetic and isotherm studies on the novel bacterium Lactiplantibacillus plantarum SS-AU1 for Methyl Red bio-degradation under high salinity.he degradation was assessed based on the UV-Spectrophotometer studies. Kinetics and Isotherm studies were also performed to find the mechanism involved. The findings were also justified by Scanning Electron Microscope images and Fourier Transformed Infrared spectra.The strain can degrade up to 400 mg L−1 dye concentration. Kinetic studies revealed chemisorption involvement in the process where maximum adsorption was observed at 2500 mg g−1 and the formation of multilayer on the cell surface was confirmed. It followed the pseudo-second-order at low dye concentration while the pseudo-first-order at high dye concentration. The high degradation efficiency, having Km = 0.092 mMol−1 L and Vm = 0.761 mmol min−1, can be attributed to intra-particle diffusion predicted by the Weber-Morris and Elovich-Model. The weak bonding (E = 28 J/mol) is a key-finding behind the efficient degradation. Infrared spectroscopy study revealed the breakdown of the azo-bond. In addition, a Biodegradation mechanism has been suggested.
- Subjects
SCANNING electron microscopes; BIODEGRADATION; INFRARED spectroscopy; SUSTAINABILITY; FOURIER transforms
- Publication
International Journal of Environmental Science & Technology (IJEST), 2024, Vol 21, Issue 10, p7191
- ISSN
1735-1472
- Publication type
Article
- DOI
10.1007/s13762-024-05468-0