Abstract
This research provides a complete degradation scheme for acrylic copolymer/cellulose acetate butyrate peelable decontamination films. This study analyzed the removal efficiency of uranium by peelable decontamination film. More importantly, the degradability of the films was evaluated by a combined treatment with UV radiation and microbial biodegradation. The results showed that UV radiation would rupture the surface of the decontamination films, which leaded the weight-average molecular weight decreased by 55.3% and number-average molecular weight decreased by 75.83%. Additionally, the microbial flora induced light-degradable decontamination film weight-average molecular weight and number-average molecular weight decreased by 9.3% and 30.73%, respectively. 16S rRNA microbial diversity analysis indicated that Pantoea, Xylella, Cronobacter, and Olivibacter were the major degrading bacteria genera. Among them, 4 key strains that can be stripped of decontamination films have been isolated and identified from the dominant degrading bacteria group. The results show that UV radiation combined with microbial flora can achieve rapid degradation of the decontamination films.
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24 January 2022
A Correction to this paper has been published: https://doi.org/10.1007/s00248-022-01966-1
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Acknowledgements
The preparation and characterization of the decontamination film were guided and assisted by Professor Lin Xiaoyan and Dr. Pan Xunhai of the Engineering Research Center of the Ministry of Education of Biomass Materials, and then expressed sincere thanks. We wish to thank the Shanghai Luming biology Co., Ltd. for their assistance in the analysis of metabolome data. The Engineering Research Center for Material and Materials of the Ministry of Education of Southwest University of Science and Technology is kindly acknowledged for the experimental sites and equipment.
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Open access funding was supported by the National Key Laboratory of National Nuclear and Biochemical Disaster Protection Open Fund Project (No. SKLNBC2019-21).
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Zhang, L., Lai, Jl., Zhang, Y. et al. Degradation of Uranium-Contaminated Decontamination Film by UV Irradiation and Microbial Biodegradation. Microb Ecol 84, 439–450 (2022). https://doi.org/10.1007/s00248-021-01862-0
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DOI: https://doi.org/10.1007/s00248-021-01862-0