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

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Table D-2 Details <strong>of</strong> calculation <strong>of</strong> the material flow <strong>of</strong> plastics <strong>in</strong> <strong>Thailand</strong>, 2010 (cont<strong>in</strong>ued)<br />

No. Description<br />

23<br />

24<br />

25<br />

26<br />

<strong>Plastic</strong> waste<br />

generation <strong>in</strong><br />

MSW<br />

<strong>Plastic</strong> waste<br />

generation <strong>in</strong><br />

MSW<br />

(Thermosett<strong>in</strong>g)<br />

<strong>Plastic</strong> waste<br />

generation <strong>in</strong><br />

MSW<br />

(Thermoplastic)<br />

Uncollected<br />

MSW waste<br />

(Thermosett<strong>in</strong>g)<br />

Value<br />

(Tonnes/year)<br />

2,577,060<br />

25,770<br />

2,551,290<br />

5,154<br />

195<br />

Assumption and Calculation<br />

The amount <strong>of</strong> plastic waste generation was calculated by us<strong>in</strong>g the percent composition <strong>of</strong> plastic<br />

wastes <strong>in</strong> MSW multiply<strong>in</strong>g by total amount <strong>of</strong> MSW generation <strong>in</strong> <strong>Thailand</strong>. The amount <strong>of</strong> MSW<br />

generation was 15,159,180 tonnes/year <strong>in</strong> 2010 out <strong>of</strong> which 17% was the percentage <strong>of</strong> plastic<br />

wastes <strong>in</strong> MSW (PCD, 2010 and 2012). This amount <strong>of</strong> plastic waste generation is from municipal<br />

solid wastes which are collected by the municipality <strong>in</strong> <strong>Thailand</strong>. It does not <strong>in</strong>clude the <strong>in</strong>dustrial<br />

wastes. (Not present <strong>in</strong> the material flow)<br />

The amount <strong>of</strong> thermosett<strong>in</strong>g wastes <strong>in</strong> MSW was estimated by sett<strong>in</strong>g the assumption. The<br />

assumption is 1% <strong>of</strong> total plastic waste generation <strong>in</strong> MSW is thermosett<strong>in</strong>g waste generation. The<br />

calculation was done by us<strong>in</strong>g this percentage multiply<strong>in</strong>g by the amount <strong>of</strong> total plastic waste<br />

generation <strong>in</strong> MSW, so 25,770 tonnes/year was thermosett<strong>in</strong>g waste generation <strong>in</strong> 2010. (Not present<br />

<strong>in</strong> the material flow)<br />

The amount <strong>of</strong> thermoplastic wastes was generated <strong>in</strong> 2010. the amount <strong>of</strong> thermoplastic waste<br />

generation was calculated by us<strong>in</strong>g the follow<strong>in</strong>g formula:<br />

Thermoplastic waste generation = Total <strong>Plastic</strong> <strong>Waste</strong> Generation – Thermo Sett<strong>in</strong>g <strong>Waste</strong><br />

(Thermosett<strong>in</strong>g) = 2,577,060-25,770<br />

Thus, the amount <strong>of</strong> thermoplastic waste generation was 2,551,290 tonnes/year <strong>in</strong> 2010 (Not present<br />

<strong>in</strong> the material flow)<br />

The presentation <strong>of</strong> PCD <strong>in</strong> 2012 stated that 20% <strong>of</strong> MSW generation did not collected to dispose or<br />

treat. The assumption is 20% <strong>of</strong> thermosett<strong>in</strong>g waste generation is not collected by municipality to<br />

dispose (PCD, 2012). The calculation by us<strong>in</strong>g this percentage multiply<strong>in</strong>g by the amount <strong>of</strong><br />

thermosett<strong>in</strong>g waste generation was done, so the amount <strong>of</strong> uncollected thermosett<strong>in</strong>g wastes <strong>in</strong><br />

MSW was 5,154 tonnes/year. (Not present <strong>in</strong> the material flow)

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