Robust Optimization on Regional WCO-for-Biodiesel Supply Chain under Supply and Demand Uncertainties

Table 5

Value of other parameters in the model.

Parameters	Values
Depreciation year of biorefinery	20 years
Conversion rate of biodiesel from WCO	90% [36]
Production cost of biodiesel per unit	1300 RMB/ton [37]
Production emission of biodiesel per unit	39.61 CO2 eqv./MJ [10]
Road transportation cost per unit	0.35 RMB/ton [38]
Road transportation emission per unit	0.04795 kg CO2 eqv./ton-kilometer [39]
Ship transportation cost per unit	0.0165 RMB/ton [40]
Ship transportation emission per unit	0.01733 kg CO2 eqv./ton-kilometer [39]
Transshipment cost per unit	38 RMB/ton [41]
Transshipment emission per unit	0.0070 kg CO2 eqv./ton
Carbon emission allowance for producing 1 ton biodiesel	41.56 CO2 eqv./ton
Carbon emission trading price	20
Social cost for uncollected kitchen waste per unit	5 RMB/ton
Robust risk coefficient λ	0.1

The life cycle carbon emission of fossil fuel is 103.92 CO₂ eqv./MJ [10]; this paper takes 40% of the carbon emission of fossil fuel as the carbon emission allowance for producing biodiesel [28].
China has carried out carbon emissions trading pilot project Beijing, Shenzhen, Shanghai, and so on, and the carbon emission trading price is about 20–25 RMB/ton.