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Home » Biogas with almonds’ integuments, a concrete commitment to clean energy

Biogas with almonds’ integuments, a concrete commitment to clean energy

Every day we obtain 5.000 kg of integument from almonds’ peeling process and we use it for biogas plants for the production of clean energy.

The real eco-sustainability starts from concrete actions and from a radical change of mentality and approach about what we consider garbage. Reducing waste and reusing it is therefore the only possible way, in accordance with the points of the 2030 Agenda dictated by the UN, to lower the environmental impact of our productions. At Alfrus we also do that with water which we filter and reuse for irrigation of agricultural fields. Similarly, the integuments of almonds (the film that wraps the seed) is a perfect ingredient for biogas’ production, as it is a vegetable residue.

The integuments are obtained by a process which uses water and heat to cause the natural detachment of the film from the almond, and because of this they contain an average of 70% humidity. A valuable factor in the anaerobic fermentation process that is the basis of energy production through biogas.


The integuments obtained from the processing of almonds are delivered to a high-tech biogas plant that uses organic and plant-based derivatives. The plant is based on a very simple principle: the natural fermentation of organic and vegetable components over time and under certain environmental conditions.

The plant uses: almonds’ integuments but also by-products derived from corn, rice, olive and sunflower-seed oil.

These products naturally start producing a mixture of various types of gases through an anaerobic fermentation. From this mixture comes the biogas which is used for the production of electricity.


We believe in biogas to lower the environmental effect of our production for several reasons:
– The use of biogas provides savings of fossil fuels, avoiding the release of additional carbon dioxide into the environment, since the amount of CO2 emitted in the atmosphere by these plants corresponds to the amount used by plants in photosynthesis.
– The energy obtained from biogas is always available, regardless of weather conditions that affect instead the production of energy from wind and solar sources.
– The fermentation residue is used as fertilizer in agricultural crops, in this way nothing is wasted.

We believe in a careful and respectful production, and in a way of doing responsible business towards what surrounds us. By reusing waste, which is not just garbage for us, we are demonstrating this in a concrete way.

Find out more about our commitment to sustainability here.

26 Luglio 2022