Time, Temperature and Amount of Distilled Water Effects on the Purity and Yield of Bis(2-hydroxyethyl) Terephthalate Purification System

H.W. Goh  -  Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
*Salmiaton Ali  -  Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
N. Abdullah  -  Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
A. Idris  -  Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
Received: 12 Aug 2014; Published: 12 Jul 2015.
Open Access
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Abstract

Polyethylene terephthalate (PET) bottle is one of the common plastic wastes existed in the municipal solid waste in Malaysia. One alternative to solve the abundant of PET wastes is chemical recycling of the wastes to produce a value added product. This technology not only can decrease the PET wastes in landfill sites but also can produce many useful recycled PET products. Bis(2-hydroxyethyl) terephthalate (BHET) obtained from glycolysis reaction of PET waste was purified using crystallization process. The hot distilled water was added to glycolysis product followed by cooling and filtration to extract BHET in white solid form from the product. The effect of three operating conditions namely crystallization time, crystallization temperatures and amount of distilled water used to the yield of crystallization process were investigated. The purity of crystallization products were analyzed using HPLC and DSC. The optimum conditions of 3 hours crystallization time, 2 °C crystallization temperature and 5:1 mass ratio of distilled water used to glycolize solid gave the highest yield and purity of the crystallization process. © 2015 BCREC UNDIP. All rights reserved

Received: 12nd August 2014; Revised: 4th February 2015; Accepted: 5th February 2015

How to Cite: Goh, H.W., Salmiaton, A., Abdullah, N., Idris, A. (2015). Time, Temperature and Amount of Distilled Water Effects on the Purity and Yield of Bis(2-hydroxyethyl) Terephthalate Purification System. Bulletin of Chemical Reaction Engineering & Catalysis, 10 (2): 143-154. (doi:10.9767/bcrec.10.2.7195.143-154)

Permalink/DOI: http://dx.doi.org/10.9767/bcrec.10.2.7195.143-154

 

Keywords: PET waste; Optimum conditions; BHET; Crystallization Process; PET Waste; Yield

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