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Development of Emission Factors for Polypropylene Processing.

Ken Adams1, John Bankston2, Anthony Barlow3

  • 1a The Society of the Plastics Industry, Inc. , Washington , District of Columbia , USA.

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|January 7, 2017
PubMed
Summary
This summary is machine-generated.

This study developed emission factors for volatile organic compounds and particulate matter during polypropylene extrusion. These factors help estimate atmospheric releases from similar industrial processes.

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Area of Science:

  • Polymer Processing
  • Environmental Science
  • Chemical Engineering

Background:

  • Polypropylene (PP) extrusion is a common industrial process.
  • Understanding emissions from PP processing is crucial for environmental compliance and worker safety.

Purpose of the Study:

  • To quantify emission factors for volatile organic compounds (VOCs) and particulate matter (PM) during the extrusion of commercial-grade polypropylene homopolymers and copolymers.
  • To provide data that can be used by processors to estimate emissions from similar operations.

Main Methods:

  • Utilized a small commercial extruder to process polypropylene resins.
  • Measured emissions of selected volatile organic compounds and particulate matter.
  • Calculated emission factors as pounds released per million pounds of polymer processed (ppm wt/wt).

Main Results:

  • Emission factors were determined for various VOCs and particulate emissions.
  • Data collected across a range of polymer melt temperatures (400-605 °F).
  • Acknowledged that temperatures above 510 °F are extreme and typically used for specialized applications like melt-blown fibers.

Conclusions:

  • The developed emission factors are applicable to polypropylene extrusion operations similar to those studied.
  • Processors can use these factors to estimate atmospheric emissions based on production volumes.
  • Users should consult resin manufacturers' recommendations for appropriate processing temperatures, especially for extreme conditions.