Q: What is Biogas?
A: Biogas is a mixture of naturally occurring gases, consisting mostly of methane (CH4) and carbon dioxide (CO2) together with trace levels of other gases.
Q: How is biogas made?
A: Biogas is produced by a group of microorganisms called methanogens. Unlike animals and bacteria that require oxygen to live, methanogens thrive in completely oxygen-free environment.
Q: Doesn’t methane smell bad?
A: Methane is a colorless and odorless gas. Biogas has a slight “rotten eggs” or garlic smell from a gas called hydrogen sulfide (H2S).
Q: Isn’t there an odor problem with biogas digesters?
A: Biogas digesters operate in an airtight environment, which also controls odors. The process eliminates virtually all odors in even the smelliest wastes. Excessive odors are an indication something is not working properly.
Q: Don’t you need cattle manure to make methane?
A: All living matter contains the microorganisms to produce methane gas. Many plants produce much higher yields of gas per pound than cattle manure.
Q: How much gas can my 2M3 Home Biogas Digester produce?
A: The 2M3 will produce two cubic meters (70 cubic feet) of biogas per day. This is a sufficient amount of gas to cook 3 meals a day for 10 people or operate a 1 kW electric generator at full load for 3 hours. It could power a 200 watt, 55-inch flat screen TV for 15 hours.
Q: Is biogas safe to burn inside?
A: Biogas is virtually identical to the fossil natural gas used in tens of millions of American homes. It is a very clean-burning energy source. The hydrogen sulfide in biogas can be harmful, but it can be easily and safely filtered out.
Q: Doesn’t the CO2 in biogas contribute to global warming?
A: The carbon in biogas is what is called biogenic carbon. It is part of the Earth’s natural carbon cycle. The same amount of carbon would be released in the atmosphere if the organic matter used to feed a biogas digester were left to decompose naturally.
Q: How long after my 2M3 Home Biogas Plant is loaded will it begin producing flammable biogas?
A: The 2M3 will begin producing flammable biogas in approximately 48 to 72 hours of loading.
Q: How long will the 2M3 Home Biogas Plant produce flammable biogas?
A: Biogas will be produced indefinitely, as long as the biogas plant is fed fresh material each day.
Q: How long will it take to install my 2M3 Home Biogas Plant?
A: The 2M3 is an insulated poured-in-place concrete tank. Construction will require a total of 3 days over a 7-10 day period. The concrete will be poured the first day, and the tank will need to cure for a minimum of 7 days before the final two days.
Q: How can I get a hold of HESTIA Home Biogas if I have any questions?
A: HESTIA Home Biogas stands behind all of our products. Whether we have built your digester or you purchased plans for a DIY project from us, you can contact us at firstname.lastname@example.org.