Journal
MICROBIAL ECOLOGY
Volume 84, Issue 2, Pages 439-450Publisher
SPRINGER
DOI: 10.1007/s00248-021-01862-0
Keywords
Decontamination film; Radionuclide; Biodegradation; Photodegradation; Microbial diversity
Categories
Funding
- National Key Laboratory of National Nuclear and Biochemical Disaster Protection Open Fund Project [SKLNBC2019-21]
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This study provides a complete degradation scheme for acrylic copolymer/cellulose acetate butyrate peelable decontamination films. The results show that UV radiation combined with microbial flora can achieve rapid degradation of the decontamination films, with microbial flora inducing significant decreases in weight-average molecular weight and number-average molecular weight.
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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