What is the most cost-efficient way to create a biodigester?
This will depend largely on the supply of certain materials that you have in your area. If you have access to affordable cement, I would recommend that you make a tank with cement. However, if you have very clay-like soil, you can maintain a biodigester tank in pure dirt with minimal draining. In April of 2006, this biodigester that the Santa Fe Women’s Group built costed 161.000 colones, around $310 US at the time.
