Closed-Loop Supply Chain Models with Considering the Environmental Impact

Table 9

Results for three cases.

Basic model			Emission cost minimization			Emission-constraint model
Selective path	Amount of product flow	Amount of CO2 (kg)	Selective path	Amount of product flow	Amount of CO2 (kg)	Selective path	Amount of product flow	Amount of CO2 (kg)
3-3:	104	26.46	3-3:	104	26.46	3-3:	104	26.46
3-5:	44	245.71	3-3:	30	180.42	3-3:	28	168.39
3-7:	60	118.56	3-6:	26	175.9	3-5:	52	290.39
5-3:	40	125.43	3-7:	48	94.85	3-7:	24	47.42
3-6:	35	225.52	3-5:	25	78.4	3-2:	23	60.76
7-4:	54	365.35	6-4:	13.4	71.95	5-4:	48	195.88
4-2:	44.4	123.97	7-2:	42	243.56	4-1:	38.4	96.49
2-1:	31.8	39.61	2-1:	29.4	36.62	7-6:	18	107.86
6-3:	22.4	151.55	5-3:	21	117.27	2-3:	10.4	99.85
1-3:	13.8	58.69	4-3:	3.8	30.85	1-3:	20.4	86.76
3-1:	36.2	120.51	1-3:	11.4	48.48	6-3:	5.4	36.53
1-3:	25.34	17.62	3-1:	36.2	120.51	3-1:	36.2	120.51
			1-3:	25.34	17.62	1-3:	25.34	17.62
Landfill	10.86	—	Landfill	10.86	—	Landfill	10.86	—
Objective			Objective			Objective
230023.6			233765.9			231159