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Extraction and Analysis of Degradable Polyethylene Residues in Soil

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Abstract:

A method for extraction of degradable polyethylene (PE) residues in soil was reported in this paper. PE powder (Mw=5000) which was taken as simulated PE residues were evenly mixed with different types of soils. The soil and PE powder mixtures were dissolved in HF:HCl acid mixture (5:2 (v/v)) for 50min at room temperature, followed by sequential washed using water, ethanol, sodium hydroxide and tetrahydrofuran at 45oC. The extraction procedure gave an average recovery rate of 82%. The results show that the soil type had no significant effect on PE recovery rate. The FT-IR spectra and the high temperature gel permeation chromatography (HT-GPC) illustrates that no significant changes in chemical structure and molecular weight and molecular weight distribution of PE after the extraction. The preliminary results obtained indicate that this method can be a new approach in studying the degradation of PE residues in soil.

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Periodical:

Advanced Materials Research (Volumes 554-556)

Pages:

157-160

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.554-556.157

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Online since:

July 2012

Authors:

Xiao Li Xiong*, Xue Gang Luo, Cheng Chen

Keywords:

Extraction, Polyethylene Powder, Soil

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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