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International Journal of Polymeric Materials and Polymeric Biomaterials Volume 60, 2011 - Issue 14
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Original Articles

A Rapid, Economical, and Eco-Friendly Method to Recycle Terephthalic Acid from Waste Poly (Ethylene Terphthalate) Bottles

Umer Shafique Institute of Chemistry, University of the Punjab, Lahore, PakistanCorrespondence[email protected]
,
Waheed uz Zaman Institute of Chemistry, University of the Punjab, Lahore, Pakistan
,
Jamil Anwar Institute of Chemistry, University of the Punjab, Lahore, Pakistan
,
Munawar Ali Munawar Institute of Chemistry, University of the Punjab, Lahore, Pakistan
,
Muhammad Salman Institute of Chemistry, University of the Punjab, Lahore, Pakistan
,
Amara Dar Institute of Chemistry, University of the Punjab, Lahore, Pakistan
,
Rabia Rehman Institute of Chemistry, University of the Punjab, Lahore, Pakistan
,
Uzma Ashraf Institute of Chemistry, University of the Punjab, Lahore, Pakistan
&
Shahzad Ahmad Institute of Chemistry, University of the Punjab, Lahore, Pakistan
 show all
Pages 1147-1151 | Received 06 Sep 2010, Accepted 22 Jan 2011, Published online: 02 Dec 2011
 
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Abstract

A method has been proposed to rapidly degrade waste PET (polyethylene terphthalate) bottles and recover terephthalic acid (TPA) in good yield. The method involves fusion of PET bottle chips with caustic soda in a china-clay crucible placed on the silicon carbide (SiC) slab by exposure to microwaves in a domestic oven. The PET waste was converted to water-soluble sodium salt of TPA in just 4 minutes. Afterwards, the solution was acidified with HCl to recover TPA in high yield. The method can be used to design environmentally benign and fast industrial prototypes to recycle terephthalic acid from waste PET bottles.

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