Nopalimex

The system includes a well-insulated above-ground container. The biogas digester processes prickly pears (from the cactus) into biomethane. The pears are ground up into a soup, mixed with manure and fermented in a digester. The biogas generated is then cooled to dewater it.

May be provided by the manufacturer

Unknown

Research was conducted by scientists in Oxford University on the prickly pear cacti and they found that the plant can help produce more food in drought-stricken areas. Since the cacti absorbs high quantities of water, after digestion biogas is made, liquid and solid fertilizer will be left over. This in turn is used to better cultivate crops in areas that could not otherwise support them.

There are some dangers associated with biogas, including fire hazard, explosion, gas leaks, and negative pressure.