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首页> 外文期刊>RSC Advances >Bio-degradation of polyethylene waste by simultaneous use of two bacteria: Bacillus licheniformis for production of bio-surfactant and Lysinibacillus fusiformis for bio-degradation
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Bio-degradation of polyethylene waste by simultaneous use of two bacteria: Bacillus licheniformis for production of bio-surfactant and Lysinibacillus fusiformis for bio-degradation

机译：通过同时使用两种细菌的生物降解聚乙烯废物：Bacillus Lichenifirs用于生产生物表面活性剂和促胰蛋白酶Fusiformis的生物降解

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摘要

A unique method of biodegradation of commercial polyethylene by using simultaneously a bio-surfactant produced by Bacillus licheniformis and Lysinibacillus bacterium in various combinations was investigated in this study. Bio-surfactant produced by B. licheniformis did not have any anti-adhesive property for bio-film formation unlike other types of bio-surfactant produced by other strains of the same bacterium. It was also observed that the lower the surface tension, the higher is the level of oxidation of polyethylene. Lysinibacillus was able to form a bio-film on the control polyethylene without any pre-oxidation step and simultaneously oxidize the polyethylene. Polyethylene samples which were treated with Lysinibacillus along with bio-surfactant showed weight loss. A maximum weight loss of 2.97 +/- 0.05% was achieved in the case of polyethylene treated with Lysinibacillus for 1 month, then treated with bio-surfactant for 1 month, followed by treatment with Lysinibacillus for another 1 month. Polyethylene is biodegraded via conversion of carbonyl groups into unsaturated hydrocarbon by both bio-surfactant and Lysinibacillus bacterium. In GC-MS analysis, partial oxidation of anti-oxidant used in commercial polyethylene was also observed. So, our present method of biodegradation by simultaneous use of two bacteria is very environmentally friendly as well as very efficient.
机译：在本研究中研究了通过同时使用由芽孢杆菌植物状的芽孢杆菌和Lysinibacillus细菌产生的生物表面活性剂的独特的商业聚乙烯方法。由B.Hicheniformis产生的生物表面活性剂与其他类型的生物表面活性剂不同的生物膜形成没有任何抗粘接性，与其他类型的相同细菌产生的其他类型的生物表面活性剂。还观察到，表面张力下降，聚乙烯的氧化水平越高。 Lysinibacillus能够在对照聚乙烯上形成生物膜而无需任何预氧化步骤并同时氧化聚乙烯。用羟基吡咯和生物表面活性剂处理的聚乙烯样品显示重量损失。在用Lysinibacillus的聚乙烯1个月的聚乙烯的情况下实现了2.97 +/- 0.05％的最大重量损失，然后用生物表面活性剂处理1个月，然后用Lysinibacillus另外1个月处理。通过生物表面活性剂和促胰蛋白酶细菌将羰基转化成不饱和烃的聚乙烯是生物降解的。在GC-MS分析中，还观察到在商业聚乙烯中使用的抗氧化剂的部分氧化。因此，我们通过同时使用两种细菌的​​生物降解方法是非常环保的，也是非常有效的。

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  • 来源
    《RSC Advances》 |2016年第4期|共11页
  • 作者

    Mukherjee Shritama; Chowdhuri Uttam Roy; Kundu Patit P.;

  • 作者单位

    Univ Calcutta Dept Polymer Sci &

    Technol Adv Polymer Lab Kolkata 9 W Bengal India;

    Univ Calcutta Chem Technol Kolkata 9 W Bengal India;

    Univ Calcutta Dept Polymer Sci &

    Technol Adv Polymer Lab Kolkata 9 W Bengal India;

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  • 正文语种 eng
  • 中图分类 化学;
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