Sep 18, 2012, updated September 2012
As an outcome of using RISE tool to evaluate milk farms, there have been some recommendations to support their sustainability; one of them is Bio digesters implementation in order to produce biogas supporting directly 2 concepts: energy & climate and soil nutriments flow.
Bio digesters have been installed in 28 milk farm producers, looking to use cow’s manure to generate biogas and bio fertilizers in order to reduce negative impact in the environment due to the generation of methane gas and nitrogen into the soil.
Up to 2012 there have been built:
- 11 bio digesters at Torreón milk district
- 8 bio digesters at Lagos district
- 7 bio digesters at the Querétaro milk district
- 2 bio digesters at Coatepec milk district
With all of these, up to 161,181 m3 of biogas are generated on a daily basis, 96,708 m3 of them, are methane gas which is used for electric energy generation or it is burned out to avoid pollution for the atmosphere.
Value to Society
Suppliers have reduced their energy costs and usage of chemical fertilizers, avoiding methane gas emissions to go into the atmosphere. Also there are additional benefits to the community as insects and plagues originated by the manure are controlled.
Value to Nestlé
Up to 45% of the milk Nestlé buys comes from the 29 milk farms with bio digesters who are using cow’s manure to generate energy and bio fertilizers.
To have 176 bio digesters installed in 2015 and collect 54% of milk from milk farms with this kind of equipment.