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

Table A-6 Details of parameters and calculation method for industrial incineration
process
Parameter Calculation
II1 and RW4 See the details in Table A-5
II2 See the details in Table A-3
OG2 According to Phuket waste incineration report (2006), the amount of ash generation from
the incinerator was 15%-20% of waste feeding. The assumption was 80% of plastic waste
which is burnt in industrial incineration will become off-gas.
Stock 7 According to Phuket waste incineration report (2006), the amount of ash generation from
the incinerator was 15%-20% of waste feeding. The assumption was 20% of plastic waste
which is burnt in industrial incineration will become ash. Moreover, plastic wastes which
are burnt in cement factory can be used to mix with cement product (SCC, 2012), so this
amount of residues waste was assumed as a stock in the cement factory.
Plastic to oil
The inputs of this process are landfilled plastic wastes and fresh plastic wastes. The
products of this process are crude oil and residue wastes which are generated from oil
recovery plants.
Figure A-7 Plastic to oil process
Table A-7 Details of parameters and calculation method for plastic to oil process
Parameter Calculation
PO1 See the details in Table A-5
PO2 There are three oil recovery plants of private company which were observed in 2010. The
three plants were set at TPI Polene PLC. (Saraburi province), Renewable Energy Ltd.,Co.
(Saraburi province), and Bangkok Tyre Refinery Ltd., Co. (Chachoengsao province). The
assumption is 6 tonnes/day of fresh plastic waste from community is fed into the reactor of
oil recovery plants. The amount of plastic waste used in private oil recovery plants was
calculated by multiplying the assumed amount by the numbers of private oil recovery plants.
In addition, the one oil recovery plant is in Rajamangala University of Technology
Thunyaburi (RMUTT). This plant uses 2 tonnes/day of fresh plastic waste, and the
calculation method for this amount is same as the calculation of three private companies.
Finally, the total amounts of fresh plastic waste used for oil recovery were calculated by the
aggregate of all numbers of fresh plastic wastes from all private oil recovery plants.
RW3 See the details in Table A-5
O From the Hua-Hin municipality presentation, 80% of crude oil was produced from 100% of
plastic waste feeding. The assumption is all oil recovery plants in the municipalities and
private companies have the same production capacity. The calculation of amount of crude oil
generation from oil recovery plant (plastic to oil) was done by multiplying the referent
percentage by all amounts of plastic wastes for oil recovery (PO 1 and PO 2).
Stock 8 The amount of stock means that amounts of plastic wastes and crude oil are stocked in
plastic to oil process. This amount was calculated automatically by STAN software.
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