Selva Negra Coffee Estate - Bio Gas Sustainable Process

Sustainable Processes - Bio Gas System

Methane gas from coffe by-products

The water used in the process of milling the coffee is stored in bio-digestors. Large tanks that are half way full with volcanic rock that host a lot of bacteria that will clear out the water by fermentation. The gas produce of this fermentation (methane gas) is used in the workers main kitchen for cooking purposes and the excess water, now clear, is used to irrigate the pastureland for the cattle.

Methane gas from cow manure

As the installation of the bio-gas system is only used during the months of the harvest, usually 4 months, we did not want all this to go waste, so we made a complement to the system by creating another bio gas for the cattle., This works a little different, the digestors are empty, they get full of cow manure only, and it is also fermented, the fermentation of course makes the methane gas, used for cooking, and the affluent or excess goes out by pipelines to a pool where it is stored and then taken with a metal tank on wheels to be irrigated with hoses on the coffee plantation.
This is a very interesting system, it complements a lot the coffee water one, and we are able to use all the cooking instalations with both of them.

Selva Negra Coffee Estate
KM 140 Carretera a Jinotega Matagalpa, Nicaragua 011-505-2772-3883

coffeeinfo@selvanegra.com

	Sustainable Processes - Bio Gas System
	Methane gas from coffe by-products The water used in the process of milling the coffee is stored in bio-digestors. Large tanks that are half way full with volcanic rock that host a lot of bacteria that will clear out the water by fermentation. The gas produce of this fermentation (methane gas) is used in the workers main kitchen for cooking purposes and the excess water, now clear, is used to irrigate the pastureland for the cattle.

	Methane gas from cow manure As the installation of the bio-gas system is only used during the months of the harvest, usually 4 months, we did not want all this to go waste, so we made a complement to the system by creating another bio gas for the cattle., This works a little different, the digestors are empty, they get full of cow manure only, and it is also fermented, the fermentation of course makes the methane gas, used for cooking, and the affluent or excess goes out by pipelines to a pool where it is stored and then taken with a metal tank on wheels to be irrigated with hoses on the coffee plantation. This is a very interesting system, it complements a lot the coffee water one, and we are able to use all the cooking instalations with both of them.