Page 158 - Materials Chemistry, Second Edition
P. 158
9 Life Cycle Inventory Analysis 143
Emission of copper:
0.1mg/L
Product Y:
2000kg/year
Process Wastewater:
1000m /year
3
3
Convert the concentration unit to ”kg/m ” and multiply it with
the wastewater flow: 0.0001kg/m *1000m /year = 0.1kg/year.
3
3
Emission of copper:
0.1kg/year
Product Y:
2000kg/year
Process
Divide all flows by the annual production rate (2000 kg/year)
Emission of copper:
-5
5*10 kg
Product Y:
1kg
Process
Fig. 9.7 Example of the calculation of an emission per reference flow (1 kg of product Y) from a
wastewater concentration. Dotted arrows indicate input flows not considered in the example
