"La Bomba de Cenovi": The Dominican Republic's first Hestia Home Biodigester at the home of Tesori Alvarez in San Francisco de Macoris.
This first for Solar CITIES was the idea of Martha Perez from our Mercy College Environmental Sustainability and Justice League. Martha is a Dominican native and her friend Tesori welcomed us to her home and put us up and provided the materials and hired expert mason and construction engineer Julio and his son to help us create a home biodigester in the Hestia style with help from inventor/designer Warren Weisman. Martha and fellow student William Gallicano brought down the 4 millimeter EPDM pond liner from New York, which William purchased and donated to the initiative.
A year after our Envisaj Mercy team went on the "mother of all biogas tours", a faculty-led service learning expedition to Israel and Palestine, visiting Eco-gas Isreal and the Palestinian Wildlife Society and introduced our Solar CITIES IBC/ARTI hybrid biodigester to the Green Apprenticeship Program in Kibbutz Lotan, we found ourselves on a "student-led" service learning expedition in the Dominican Republic where several of our Envisaj Mercy club members have family. In San Francisco de Macoris we built our first Hestia Home Biogas system from cinder block and EPDM pond liner.
This looks realy good and solid. I like it!
can you provide me of more information about the biodigester? sizes, how much gas it produces, etc?
Hola Paola... thanks for your question. All biodigesters kept at 37 C and fed 1/40 of their volume (so, for example, 25 liter bucket of food waste for a 1000 liter tank) should be able to produce their volume in gas each day (1 cubic meter for each 1000 liters). This is under ideal conditions. Expect half that and you usually won't be disappointed. It is very temperature dependent. The Hestia is no different. Here is an animation one of my students did about how to build it (it doesn't show the gas outlet thought; he is working on that). https://www.youtube.com/watch?v=2fW60TSmqkA&feature=youtu.be