Milk production (mælkeproduktion) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Fat content (%) | |
Skimmed milk | 0.1 |
Low fat milk | 1.5 |
Full milk | 3.5 |
Mini milk | 0.5 |
Homogenisation requires about 4% of total electricity for milkproduction and diferences between homogenised and non-homogeniosed milk with respect to electricity consumption have been ignored.
Production processes from receival of fresh cow milk to storage of the final product before distribution as well as administration has been included. Packaging, cleaning agents and chemicals are not considered.
Similar
technology is used in other dairies in Arla. Arla is a major supplier of milk
to the danish market and the present data provides a reasonable representation
of milk production in Denmark.
Data have been compared with data obtained by Eide (2002) in terms of contributions to environmental impacts. Data on contributions to global warming and photochemical smog formation are at the same level as observed for small dairies whereas results differ quite much for larger dairies. The dairy analyzed here is quite large and the differences can probably be explained by different heat and electricity scenarios but maybe also different production principles.
Inputs and outputs associated with
milk production are shown in the table below. Data are provided per
kg
of
milk product
(skimmed
milk, low-fat milk etc.)
at the dairy's gate without packaging.
|
|
Unit |
Quantity |
|||
Skimmed milk |
Low fat milk |
Full |
Minimilk |
|||
Inputs |
Milk from farm |
kg |
1.12 |
1.08 |
1.02 |
1.11 |
|
Electricity |
wh |
54 |
54 |
54 |
54 |
|
Heat |
wh |
50 |
|
50 |
50 |
|
Water |
l |
0.70 |
0.70 |
0.70 |
0.70 |
|
|
|
|
|
|
|
Outputs |
Products |
|
|
|
|
|
|
Milk |
kg |
1.0 |
1.0 |
1.0 |
1.0 |
|
Cream |
kg |
0.12 |
0.08 |
0.02 |
0.11 |
|
Emissions to municipal wastewater treatment plant |
|
|
|
|
|
|
COD |
g |
2.2 |
2.2 |
2.2 |
2.2 |
|
Total N |
mg |
76 |
76 |
76 |
76 |
|
Total P |
|
20 |
20 |
20 |
20 |
Location in database: Maretial/Food from industry/ from dairies |
References
Eide MH (2002). Lifecycle assessment (LCA) of industrial milk production. International Journal of Lifecycle assessment. 7 (1) 1-12.
Data URL: http://www.lcafood.dk/processes/industry/milkproduction.html
Version no.: 1.00
Authors: Per H.
Nielsen,
2.-0 LCA Consultants
Data entry:
Data have been entered in this format by Per H. Nielsen.
Data completed: July 2003.