Oekozentrum - CH / Peru

Pulpa Pyro Peru: A Small and Mobile Pyrolysis Plant for the Use of Humid Coffee Pulp

Contract: 2013.05

Pulpa Pyro Peru: A Small and Mobile Pyrolysis Plant for the Use
of Humid Coffee Pulp

Project Type :

Pilot Project


Technology :


Country :



Project Status :


Project Start :

August 2013


End of Project :

January 2016

Partners :

Ökozentrum Langenbruck,, Martin Schmid
Sofies-Emac AG, Zurich, Martin Fritsch, Hannes Zellweger

© Ökozentrum
© Ökozentrum

Swiss Contribution

The Swiss Ökozentrum Langenbruck has many years of experience in the development of sustainable energy technologies and projects for developing countries. Sofies-Emac has specific expertise in the fields of resource efficiency and cleaner production of food items.


Coffee is often grown on small farms in Peru’s mountainous regions. The fruit pulp is the coffee production’s main biomass waste product. The humid and non-combustible coffee pulp is slightly acidic, hardly compostable or fermentable, not suitable for animal feeding and may pollute the ground water. Another aspect is the high potassium content that was extracted by the coffee plant from the soil.

This REPIC project’s main goal is the development of a simple pyrolysis plant designed for continuous operation. The pyrolysis plant will deliver both heating energy for the drying process and potassium rich bio char that can be used as fertilizer.

In order to disseminate the project's results more broadly, a workshop was held which brought together local machine manufacturers from Peru and Vietnam. The first prototypes have already been made on-site in both countries.


The Final Report „Pulpa Pyro Peru – Clean generation of biochar and energy from coffee pulp” is available at; Short movies: and