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Evaluation of Plastic Waste Management in Thailand Using Material ...

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Table A-2 Details <strong>of</strong> parameters and calculation method for plastic consumption<br />

process (cont<strong>in</strong>ued)<br />

Parameter Calculation<br />

UC The uncollected waste is the waste which is not collected by municipalities to dispose or<br />

recycle, so this amount <strong>of</strong> uncollected waste is expanded to the environment. Accord<strong>in</strong>g to<br />

PCD (2013), the waste collection efficiency is 80%, and 20% is uncollected wastes. The<br />

assumption is 20% <strong>of</strong> thermoplastic and thermosett<strong>in</strong>g wastes is not collected to dispose or<br />

recycled. The actual amount <strong>of</strong> uncollected waste can be calculated by aggregat<strong>in</strong>g<br />

uncollected thermoplastic wastes and thermosett<strong>in</strong>g wastes. The uncollected wastes are<br />

usually stocked <strong>in</strong> the environment.<br />

IPW2 The amount <strong>of</strong> plastic wastes from other <strong>in</strong>dustries. This amount is from the packag<strong>in</strong>g<br />

wastes, damaged products from the plastic <strong>in</strong>dustry and these wastes are the plastic<br />

packag<strong>in</strong>g <strong>of</strong> raw materials <strong>in</strong> the other <strong>in</strong>dustries (e.g., plastic sacks, trays molds). The<br />

amount <strong>of</strong> <strong>in</strong>dustrial plastic waste generation is presented <strong>in</strong> PCD report. The assumption is<br />

50% <strong>of</strong> <strong>in</strong>dustrial plastic waste generation.<br />

Stock 2 The amount <strong>of</strong> stock means that amounts <strong>of</strong> plastic products are stocked <strong>in</strong> plastic<br />

consumption process. This amount was calculated automatically by STAN s<strong>of</strong>tware.<br />

Collection and transportation<br />

There are plastic wastes which are <strong>in</strong>putted to collection and transportation processes.<br />

Outputs <strong>of</strong> this process <strong>in</strong>clude exported wastes, plastic wastes for recycl<strong>in</strong>g, dispos<strong>in</strong>g<br />

plastic wastes at landfill and municipal <strong>in</strong>c<strong>in</strong>eration, and distribution <strong>of</strong> undisposed wastes<br />

to the environment.<br />

Figure A-3 Collection and transportation process<br />

110

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