Biodegradation of high density polyethylene using
Streptomyces species
Ali Farzi[1];Alireza Dehnad[2];Najibeh Shirzad[3];Faezeh Norouzifard[4];
【期刊名称】《海岸生命医学杂志(英文版)》 【年(卷),期】2017(005)011
【摘要】Objective: To investigate the biodegradation of high density polyethylene (HDPE) by Streptomyces species isolated from the soil of East Azerbaijan, Iran. Methods: Powders of HDPE samples were prepared by grinding in different particle sizes of 212, 300, 420, and 500 microns. Each time 50 mg of a sample was poured to a liquid medium containing species. Samples were incubated for 18 days at 28 °C in a shaker-incubator and their degradation percentage was measured by weighting method. Produced metabolite at 18th day was analyzed by gas chromatography-mass spectrometry. Also a film of HDPE was subjected to biodegradation and after one month was analyzed by scanning electron microscope which showed degradation on the surface of the film. Results: The results showed that Streptomyces species degraded 50 mg of HDPE sample with the size of 212 μm about 18.26%, 300 and 420 μm about 14.4%, and 500 μm about 13%. Kinetic modeling of biodegradation process showed that the reaction rate was first order with respect to concentration of HDPE. Based on gas chromatography-mass spectrometry results, no high toxic material was
produced during biodegradation of HDPE. Conclusions: The research showed that isolated Streptomyces sp. are capable of degradation of HDPE polymer with high degradation efficiency. 【总页数】6页(P.474-479) 【
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High
density
polyethylene;Biodegradation;Streptomyces;Kinetic modeling;Toxicity 【作者】Ali Farzi[1];Alireza Dehnad[2];Najibeh Shirzad[3];Faezeh Norouzifard[4]; 【作者单位】Engineering,University
[1]Faculty
of
of
Chemical
and
Petroleum
Tabriz,Tabriz,Iran;[2]Biotechnology
Department,East Azerbaijan Research and Education Center Agricultural and Natural Resources,AREEO,Tabriz,Iran;[3]Young Researchers and Elite Club,Ilkhchi Branch,Islamic Azad University,Ilkhchi,Iran;[4]Department of Chemical Engineering,Islamic Azad University,Tabriz Branch,Tabriz,Iran; 【正文语种】英文 【中图分类】R73 【文献来源】
https://www.zhangqiaokeyan.com/academic-journal-cn_magazine-biomedical-english-_thesis/0201273127679.html 【相关文献】
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Biodegradation of high density polyethylene using Streptomyces species
