Production of Terephthalic Acid from Waste Polyethylene Terephthalate) Materials

J. Anwar; M.A. Munawar; W. -uz-Zaman; Z. Abbas; J.M. Anzano

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Journal of Polymer E...arrow_drop_down

Journal of Polymer Engineering

Article . 2008 . Peer-reviewed

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https://dx.doi.org/10.1515/pol...

Article

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Production of Terephthalic Acid from Waste Polyethylene Terephthalate) Materials

descriptionPublicationkeyboard_double_arrow_right Article 01 May 2008Publisher:Walter de Gruyter GmbHJournal:Journal of Polymer Engineering, volume 28 (issn: 0334-6447, eissn: 2191-0340,

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Authors: J. Anwar; M.A. Munawar; W. -uz-Zaman; Z. Abbas; J.M. Anzano;

doi: 10.1515/polyeng.2008.28.3.129

Production of Terephthalic Acid from Waste Polyethylene Terephthalate) Materials

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Abstract

A comparative study of hydrolysis of PET waste has been carried out under various reaction conditions. PET was hydrolyzed with sodium hydroxide in different solvents at reflux as well as by fusion in solventless conditions at atmospheric pressure. Best results were obtained when PET chips were heated to dryness with sodium hydroxide in minimum amount of water. A 98% yield of terephthalic acid was obtained in ten minutes. Hydrolysis with aqueous ammonia was not promising. Acid hydrolysis with nitric acid also provided 97% yield of the terephthalic acid. The basic hydrolysis of the PET waste (in a minimum amount of water) is being recommended as preferred method for the formation of terephthalic acid.

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