Modular Bio Digester

plastic bottles, inner tube and 3d-printed connections

This is a low-tech proposal to work with commonly available materials that may be even considered waste. It is meant to be reproduced in order to empower and engage people through making and producing themselves.

The materials are easily accessible and easy to be found and used. The system can be scaled-up by adding plastic bottles and inner tubes as reservoirs.

A big bottle filled with biodegradable waste and cow faeces acts as a bio-reactive tank, producing flammable methane gas. The gas gets cleaned in water through a simple setup with standardized aquarium pipes. It gets stored in an elastic inner hose of a bike or car wheel.