Enhancement of biodegradability of disposable polyethylene in controlled biological soil
Enhancement of biodegradability of disposable polyethylene in controlled biological soil
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DOI：
10.1016/s0964-8305(00)00048-2
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发表时间：
2000-01-01
影响因子：
4.8
通讯作者：
Büyükgüngör, H
中科院分区：
文献类型：
--
作者：
Orhan, Y;Büyükgüngör, H
塑料如聚乙烯广泛用于包装和其他农业应用。它们以每年2 500万吨的速度在环境中积累。因此，开发和使用可降解塑料被认为是解决塑料废物问题的一种方法。由于塑料薄膜的使用不断增加，如今，生物降解性已成为塑料的有用特性。相反，生物可降解塑料的引入产生了对评估这些聚合物在垃圾填埋场和固体废物处理系统（如堆肥或厌氧消化处理厂）中的生物降解的方法的需求。本研究的目的是探讨一次性低密度聚乙烯袋含有淀粉（12%），自氧化脂肪酸酯和催化剂在土壤中的生物降解。从结构上，这项工作旨在评估黄孢原毛平革菌（ATCC 34541）的能力，以提高聚乙烯薄膜在土壤中的微生物降解。将接种了黄孢原毛平革菌的土壤样品与LDPE/淀粉共混膜混合，并对膜和土壤的生物学变化进行了6个月的监测。通过测定聚乙烯淀粉共混膜的pH值、生物量、CO2生成量、伸长率、相对粘度和FTIR光谱等物理、化学和生物学性能，确定了聚乙烯淀粉共混膜的生物降解性。(C)2000爱思唯尔科技有限公司版权所有。
Plastics as polyethylene are widely used in packaging and other agricultural applications. They accumulate in the environment at a rate of 25 million tons per year. Thus, the development and use of degradable plastics was proposed as a solution for plastic waste problem. Because of the ever-increasing use of plastic films, nowadays, biodegradability has become a useful characteristic for plastics. Conversely, the introduction of biodegradable plastics has generated a need for methods to evaluate the biodegradation of these polymers in landfills and solid waste treatment systems such as composting or anaerobic digestion treatment plants. The purpose of this study was to investigate the biodegradation of disposable low-density polyethylene bags containing starch (12%), autoxidizable fatty acid ester and catalytic agents in soil. Structurally this work intended to evaluate the capacity of Phanerochaete chrysosporium (ATCC 34541) to enhance polyethylene film biodegradation in soil microcosms. Soil samples inoculated with P. chrysosporium were mixed with LDPE/starch blend films and biological changes of the films and soil were monitored for 6 months. The biodegradation of polyethylene starch blend film has been determined by the physical, chemical and biological properties of the samples such as pH, biomass, CO2 formation, percentage elongation, relative viscosity and FTIR spectrum. (C) 2000 Elsevier Science Ltd. All rights reserved.