A range of parameters are known to shape the methanogenic communities of biogas -
producing digesters and to strongly influence the amount of biogas produced.
Not exact matches
In addition, 34 percent of Grande Cheese's milk supply is
produced with renewable power such as from methane
digesters.
«Our bench scale testing was a 1 - liter vessel — the bacteria was
producing little bubbles in it — and the next size up for us was a 145,000 - gallon anaerobic
digester,» he recalls.
Albert Straus — who runs the operation — says they're committed to sustainable production at every level, from the way they cultivate their pastures to feed their cows, to the methane
digester they use to
produce their energy, to the reusable glass bottles they use to package the milk.
As a result, an anaerobic
digester was built in 2008 as a non-profit organization that provides compost for the Werkhoven Farm (as well as donated to the community),
produces energy for over 300 customers in the Puget Sound and valuable biosolids while reducing manure applications to the soil.
Golden Circle's wastewater plant — including a third
digester utilising CST Wastewater Solutions» and GWE's high efficiency anaerobic technology to
produce biogas — has already saved Golden Circle more than $ 2 million a year in effluent disposal since the plant was upgraded to cope with increasing production volumes.
Out of a 3,300 m ³
digester for the potato peels and primary sludge, GWE is able to
produce up to 14,150 m ³ of biogas per day from ± 230 Ton of organic residues per day (potato peels + primary sludge).
The governor also announced plans for new incentives for farmers to increase the use of «anaerobic
digesters,» which helps turn waste
produced on farm — such as cow manure — into energy that farms can use.
Some plants are starting to send it to anaerobic
digesters, where it's fermented to
produce methane.
Also, methane
produced in anaerobic biomass
digesters is economically important as «one of the few proven, economical, large - scale bioenergy strategies» in use today, they say.
Methanosaeta were the dominant methane -
producing microorganisms in the
digesters and known to convert acetate to methane, but analysis of the gene expression in the
digester revealed that Methanosaeta were also highly expressing genes for converting carbon dioxide to methane.
Perhaps instead of focusing on regulation and instead focusing on incenting positive behavior, we could get more
digesters in place which would
produce clean energy, reduce the amount of nitrogen and other nutrient pollution and provide farmers with another couple sources of revenue (electricity sales, fiber bedding sales (or savings) and increased fertilizer value of the liquid digestate as compared to raw manure.
In Madagascar it is being used as a «toilet service» where the deposits are picked up and taken to an anaerobic
digester to
produce methane and clean fertilizer.
At the base of the Bay Bridge in Oakland, the district feeds a mix of sludge, commercial food scraps, and other organic waste into an array of 12 gigantic anaerobic
digesters that
produce methane, also called biogas.
It is
producing electricity with a 200 kW generator while recovering the waste heat to both heat the
digester and reduce the use of oil - fired water heating required on the farm.
Anaerobic decomposition: Decomposition in the absence of oxygen, as in an anaerobic lagoon or
digester, which
produces CO2 and CH4.
The Pixley Biogas, LLC anaerobic
digester facility
produces biomethane from cow manure to replace the natural gas used to heat Calgren Renewable Fuels» ethanol vehicle fuel.
With U.S. livestock and poultry production now concentrated in large facilities, the use of animal waste in anaerobic
digesters to
produce methane (natural gas) is catching on fast.
Four years ago Duffy Connolly, owner of Burrows Hall Farm, approached Santee Cooper with the idea of building an anaerobic
digester that could capture methane gas, naturally
produced on his hog farm, and turn that methane into a fuel source for electricity.
Environmental Fabrics is building the methane
digester that officials say will
produce enough electricity to power 90 South Carolina homes.
Additionally, these
digesters can
produce a variety of other products that help the farm and reduce environmental impact.
NativeEnergy is helping the community of Enumclaw, Washington, build an energy -
producing methane
digester.
The US Department of Energy's Argonne National Laboratory and the sustainable energy NGO Energy Vision released two case studies assessing the results of projects that were among the first to
produce Renewable Compressed Natural Gas (R - CNG) vehicle fuel by using anaerobic
digesters to capture the biogases from decomposing organic waste....
Manure can be used to
produce electricity by using anaerobic
digesters to extract bioenergy (in the form of biogas).
97 tons of collected waste would be fed each day into anaerobic
digesters that
produce methane gas, which then runs General Electric Jenbacher gas - fired generators.
Although not specific to farms with anaerobic
digesters, farms
producing or using manure require a Nutrient Management Plan.
Anaerobic
digesters may not be exempt if the onsite combustion device 1)
produces more than one pound of sulfur dioxide an hour, or 2) has a heat input capacity of greater than 10 million Btu per hour.
The anaerobic
digester, completed in the summer of 2007,
produces approximately 2,000 kWh of electricity each day, more than three times the amount of electricity the farm currently uses.
It also captures the heat
produced when the methane is burned for the turbines and uses it to warm the
digester tanks.
The
digester and generator were destroyed, although the farm has since covered a second lagoon to which it is diverting all of the farm's manure, and it is flaring the methane
produced.
It also shows how biogas
digesters are being used in Yunnan Province, China to
produce biogas for cooking and fertilizer for farming.
More of a food
digester than a composter, this ingenious device is designed and
produced in Ontario, Canada since 1988.
After sorting, the organic waste from Tel Aviv's trash is pumped to these biogas
digesters where micro-bacteria break down the waste and
produce gas, which is used to power Arrow's entire facility.