Biodegradability of Scott-Gelead photodegradable polyethylene and polyethylene wax by microorganisms
Biodegradability of Scott-Gelead photodegradable polyethylene and polyethylene wax by microorganisms
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DOI：
10.1002/masy.19991440108
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发表时间：
1999-10-01
影响因子：
--
通讯作者：
Hayashi, S
中科院分区：
文献类型：
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作者：
Kawai, F;Shibata, M;Hayashi, S
本文描述了光降解聚乙烯 (PE) 和商用 PE 蜡的生物降解性以及 PE 生物降解的分子尺寸限制。 Scott-Gelead 系统加速了光降解。光碎片聚乙烯和商业聚乙烯蜡分别用作土壤微生物的唯一碳源和能源。通过活细胞数量的增加和添加的 PE 的 GPC 分析证实了微生物群落的生物降解。还观察到添加的 PE 样品重量显着下降。光断裂 PE 和 PEwax 均被认为可生物降解高达 5,000 或更高：低于 500 的降解率超过 40%。 500-2,000 的涨幅超过 10%。 比2000只高出几个百分点。生物降解率 (%) 和 的对数相关以显示线性并表明生物降解性极限接近 10,000。
This paper describes the biodegradability of photodegraded polyethylene (PE) and commercial PEwax and molecular size limits of PE for biodegradation. Photodegradation was accelerated by Scott-Gelead System. Photofragmented PE and commercial PEwax were used as a sole carbon and energy source for soil microorganisms, respectively. Biodegradation by microbial consortia was confirmed by the increase of viable cell numbers and GPC analysis of PE added. Significant weigh decrease of PE samples added was also observed. Both photofragmented PE and PEwax were suggested to be biodegradable up to 5,000 or more: lower than 500 was degraded by more than 40 %. 500-2,000 was by more than 10 %. higher than 2,000 was only by a few %. Logarithms of biodegradation ratio (%) and were correlated to show linearity and to suggest the biodegradability limit close to 10,000.