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Radiation tolerance and biodegradation performance of a marine bacterium Acinetobacter sp. Y9 in radioactive composite oil‐contaminated wastewater
The tolerance and degradation characteristics of a marine oil‐degrading strain Acinetobacter sp. Y9 were investigated in the presence of diesel oil and simulated radioactive nuclides (Mn2+, Co2+, Ni2+, Sr2+, Cs+) at varying concentrations, as well as exposure to γ‐ray radiation (Co‐60). The maximum tolerable concentrations for Co2+and Ni2+ were found to be 5 mg/l and 25 mg/l, respectively, while the tolerable concentrations for Mn2+, Sr2+, and Cs+ exceeded 400 mg/l, 1000 mg/l, and 1000 mg/l, respectively. A total of 0.4 Gy/h of γ‐ray radiation (Co‐60) did not significantly affect the growth of strain Y9. The presence of metal nuclides and γ‐ray radiation primarily inhibited the production of outer membrane proteins while promoting the secretion of polysaccharides in strain Y9. Strain Y9 exhibited a notable capacity to degrade diesel oil under radiative conditions when exposed to the five individual radionuclides used in this study. Furthermore, the introduction of the radiation‐resistant strain R1 significantly enhanced the diesel oil degradation efficiency of strain Y9 in the presence of a mixture of five nuclides, with the degradation efficiency increasing from 26.7% to 46.75%. Strain R1 demonstrated the ability to absorb a substantial amount of free nuclides, thereby creating favorable environmental conditions for the growth and degradation activity of strain Y9. Investigate the tolerance mechanisms of strain Y9 to different nuclides and γ‐ray irradiation. Examine the degradation characteristics of strain Y9 on diesel oil under the influence of nuclides and irradiation. In a single nuclide medium, strain Y9 exhibited a high degradation rate of 90.64% toward 1% diesel oil concentration. The addition of a radiation‐resistant strain R1 can enhance the degradation efficiency of Y9 toward diesel oil.
Radiation tolerance and biodegradation performance of a marine bacterium Acinetobacter sp. Y9 in radioactive composite oil‐contaminated wastewater
The tolerance and degradation characteristics of a marine oil‐degrading strain Acinetobacter sp. Y9 were investigated in the presence of diesel oil and simulated radioactive nuclides (Mn2+, Co2+, Ni2+, Sr2+, Cs+) at varying concentrations, as well as exposure to γ‐ray radiation (Co‐60). The maximum tolerable concentrations for Co2+and Ni2+ were found to be 5 mg/l and 25 mg/l, respectively, while the tolerable concentrations for Mn2+, Sr2+, and Cs+ exceeded 400 mg/l, 1000 mg/l, and 1000 mg/l, respectively. A total of 0.4 Gy/h of γ‐ray radiation (Co‐60) did not significantly affect the growth of strain Y9. The presence of metal nuclides and γ‐ray radiation primarily inhibited the production of outer membrane proteins while promoting the secretion of polysaccharides in strain Y9. Strain Y9 exhibited a notable capacity to degrade diesel oil under radiative conditions when exposed to the five individual radionuclides used in this study. Furthermore, the introduction of the radiation‐resistant strain R1 significantly enhanced the diesel oil degradation efficiency of strain Y9 in the presence of a mixture of five nuclides, with the degradation efficiency increasing from 26.7% to 46.75%. Strain R1 demonstrated the ability to absorb a substantial amount of free nuclides, thereby creating favorable environmental conditions for the growth and degradation activity of strain Y9. Investigate the tolerance mechanisms of strain Y9 to different nuclides and γ‐ray irradiation. Examine the degradation characteristics of strain Y9 on diesel oil under the influence of nuclides and irradiation. In a single nuclide medium, strain Y9 exhibited a high degradation rate of 90.64% toward 1% diesel oil concentration. The addition of a radiation‐resistant strain R1 can enhance the degradation efficiency of Y9 toward diesel oil.
Radiation tolerance and biodegradation performance of a marine bacterium Acinetobacter sp. Y9 in radioactive composite oil‐contaminated wastewater
Yan, Jiejie (author) / Luo, Qun (author) / Zhu, Baikang (author) / Chen, Zhi (author) / Chen, Qingguo (author)
2025-01-01
15 pages
Article (Journal)
Electronic Resource
English
Co-biodegradation of anthracene and naphthalene by the bacterium Acinetobacter johnsonii
| Taylor & Francis Verlag | 2018