Degradation of Cyanobacterium Nostoc muscorum via Air, Oxygen, and Nitrogen low temperature plasmas | ||||
| Delta Journal of Science | ||||
| Volume 49, Issue 2, December 2024, Page 54-68 PDF (785.61 K) | ||||
| Document Type: Research and Reference | ||||
| DOI: 10.21608/djs.2024.334760.1200 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Mohammed Shihab   1; Samaa Salah2; Mohamed Mokhtar Hefny 3; nabil El-siragy4; Abdelhamid ElShaer 5; Eithar El-Mohsnawy 6
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| 1Department of Physics, Faculty of Science, Tanta University, Tanta, P.O. 31527, Egypt. | ||||
| 2Physics Department, Faculty of Science, Tanta University, Egypt. | ||||
| 3Engineering Mathematics and Physics Department, Faculty of Engineering and Technology, Future University in Egypt, Cairo 11835, Egypt | ||||
| 4Physics,science,tanta,Egypt | ||||
| 5Department of Physics, Faculty of Science, Kafrelsheik University, Kafr-Elsheik, Egypt | ||||
| 6Department of Botany and Microbiology, Kafrelsheik University, Kafr-Elsheik, Egypt | ||||
| Abstract | ||||
| Cyanobacteria are prokaryotic microorganisms that possess the capability to convert light energy into chemical energy through the process of photosynthesis. These organisms exhibit numerous potential applications, including the production of bioethanol, the synthesis of food colorants, the development of dietary supplements, and the provision of raw materials. Cyanobacteria demonstrate a wide ecological distribution, inhabiting diverse environments such as freshwater and terrestrial ecosystems, as well as extreme habitats including hot springs, hypersaline aquatic systems, polar regions, and low-oxygen environments. Plasma proves to be a highly effective method for cellular degradation. When Nostoc muscorum, a type of cyanobacterium, was exposed to air-source plasma plasma, it was completely destroyed within fifteen minutes. In contrast, the use of oxygen and nitrogen plasma required at least an hour to achieve the same result. The atmospheric plasma generated chemical species such as , and at higher concentrations than the oxygen and nitrogen plasma. The plasma spectrum was measured during the treatment of the cyanobacteria, and the electron temperature and density of the air plasma were also estimated. The light absorption of the cyanobacteria's pigments and the characteristic Raman peaks disappeared after the plasma treatment, which served as clear evidence of the complete degradation of the cyanobacterium. | ||||
| Keywords | ||||
| Cyanobacteria; Raman Spectroscopy; Reactive Oxygen and Nitrogen Species (RONS) | ||||
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