| Autor: |
ZHANG Li, HE Zimei, LAI Jinlong, ZHANG Yu, LUO Xuegang |
| Předmět: |
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| Zdroj: |
Environmental Science & Technology (10036504); 2021, Vol. 44 Issue 12, p153-158, 6p |
| Abstrakt: |
The peelable decontamination film can remove dust and radioactive contamination on the surface of instruments and equipment, and a large amount of solid waste is generated after use. It is urgent to find a waste treatment plan for the decontamination film. Combining photodegradation and microbial degradation, we plan to find the dominant microorganisms that degrade the polyacrylate-based peelable decontamination film from the microbial flora, and explore the biodegradability of the polyacrylate-based peelable decontamination film. The polyacrylate-based decontamination film was used as the experimental material. Gel chromatography, Fourier infrared and scanning electron microscopy were used to analyze the photodegradation characteristics of ultraviolet light on the decontamination film; 16S rRNA gene high-throughput sequencing technology to analyze bacterial communities diversity of bacteria in the process of degrading the decontamination film. It was found that ultraviolet light caused the surface of the decontamination film to rupture, and its weight average molecular weight and number average molecular weight decreased by 46.17% and 85.64%. The addition of photodegradable decontamination film changed the dominant phyla of bacterial communities, which were respectively Proteobacteria and Klebsiella; composite bacteria agents reduced the weight average molecular weight and number average molecular weight of the photodegradable decontamination film by 12.76% and 13.92%. The combination of ultraviolet light and compound bacterial agents has a certain degradation effect on the decontamination film. This study provides a certain theoretical support for the microbial degradation of polyacrylate-based peelable decontamination films. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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