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<p>Agriculture contamination from discarded polyethylene (PE) mulch film has persisted. One potential solution that could solve both environmental and economic challenges is the biodegradation of plastic garbage. This study isolated a <i>Rhizobium</i> strain capable of breaking down polyethylene plastic film, revealing its efficient degradation. The strain, named BM, showed optimal growth at pH 7.0 and 30&#xa0;°C. After 60&#xa0;days, the PE mulch film lost 26.9 ± 0.03%. X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy confirmed the formation of extractable oxygenated compounds and unoxidized low molecular weight hydrocarbons. X-ray diffraction and gel permeation chromatography analyses confirmed the biodegradation of the PE mulch. This provides a theoretical foundation for further environmental studies on waste polyethylene degradation.</p>

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Degradation of Polyethylene Plastics by Microbial Action of Rhizobium spp. BM Isolated from Soil

  • 期刊论文

  • 发表日期：

    2025年2月14日

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  • Hui Wu,
  • Qiang Liu,
  • Fan Yang,
  • Mengzong Hou,
  • Dongyun Du,
  • Wenxiao Sun,
  • Hong Zhang,
  • Juanli Liu

摘要

Agriculture contamination from discarded polyethylene (PE) mulch film has persisted. One potential solution that could solve both environmental and economic challenges is the biodegradation of plastic garbage. This study isolated a Rhizobium strain capable of breaking down polyethylene plastic film, revealing its efficient degradation. The strain, named BM, showed optimal growth at pH 7.0 and 30 °C. After 60 days, the PE mulch film lost 26.9 ± 0.03%. X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy confirmed the formation of extractable oxygenated compounds and unoxidized low molecular weight hydrocarbons. X-ray diffraction and gel permeation chromatography analyses confirmed the biodegradation of the PE mulch. This provides a theoretical foundation for further environmental studies on waste polyethylene degradation.