Polymer recovery through selective dissolution of co-mingled post-consumer waste plastics

P. Kannan, G. Lakshmanan, A. Al Shoaibi, C. Srinivasakannan

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

It still remains a challenge to the recycling industry to develop an efficient and economical large-scale plastic waste recycling system, in spite of growing environmental concerns in waste disposal. Selective dissolution and precipitation (SDP) is a mechanical recycling technique that eliminates pre-sorting of mixed waste plastics and recycling polymer of high-grade quality. In this preliminary investigation, recycling of a comingled post-consumer waste plastic mixture of low-density polyethylene (LDPE), polystyrene (PS), high-density polyethylene (HDPE), and polyethylene terephthalate (PETE) using a lab-scale SDP setup was examined. A few experimental runs performed on the representative samples using Xylene/Toluene as solvents and acetone/2-propanol as anti-solvents demonstrated the sorting and recycling efficiency of this technique. FT-IR analysis of the reclaimed products revealed that the structural properties being very similar to virgin materials.

Original languageBritish English
Pages (from-to)75-84
Number of pages10
JournalProgress in Rubber, Plastics and Recycling Technology
Volume33
Issue number2
DOIs
StatePublished - May 2017

Keywords

  • Recycling
  • Selective dissolution
  • Sorting
  • Waste plastics

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