Sustainable Logistics Network Modeling for Enterprise Supply Chain

Table 1

Environmental impact.

Impact category	Unit		Production (per item)		Transportation 1; (per )		Transportation 2; (per )
			PED	MJ	6.25	5.889E − 09		6.223E − 13		6.920E – 13
COD	kg	2.907	4.384E − 10		2.556E − 14		2.844E − 14
SO2	kg	2.907					1.012E − 14
NH3-N	kg	2.791
	kg	2.791					3.441E − 14
CO2	kg	5.882			1.937E − 14		1.782E − 14
IWU	kg	3.333