biogas

(redirected from Digester gas)
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biogas

A gas produced by the biological degradation of organic material under anaerobic conditions, which consists primarily of methane and CO2, and smaller amounts of water vapour, nitrogen, hydrogen and other gases.
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The company notes that "Direct FuelCells operate similar to large, continuously operating batteries except they utilize a fuel to generate electricity, such as natural gas or digester gas from wastewater treatment facilities.
Natural gas usually contains 900 to 905 British thermal units (BTUs) per cubic foot, while Pima's sour digester gas averages about 600 BTUs.
The most common cause of problems in methane gas systems or with equipment that uses digester gas is moisture buildup.
Some of the digester gas being produced in this digestion process is flared.
The plants can run on a variety of fuels, including renewables such as anaerobic digester gas, ethanol and other biomass sources and readily available fuels such as natural gas and propane.
recently announced that the Japan Institute of Wastewater Engineering Technology (JIWET) has certified the company's DFC300A direct fuel cell (DFC) power plant opening at the Seibu Wastewater Treatment plant as meeting or exceeding its examination standards for electrical efficiency, heat recovery efficiency, air emissions and operational stability in anaerobic digester gas (ADG) applications.
The new GQ series generator sets produce a continuous 1570 kW (50 Hz) or 1750 kW (50 and 60 Hz) running on landfill or digester gas containing very low thermal energy, while producing low exhaust emissions.
Gas and steam applications include stack gas flow monitoring, flare digester gas measurement, and natural gas.
claimed top honors with "Powering a Fuel Cell with Anaerobic Digester Gas.
Sludge disposal by digestion, then, can be a useful by-product by reclaiming both digester gas and solid organics.
The CHP plant will also include three Solar Mercury 50 low-nitrogen oxide gas turbines, digester gas cleaning and compression equipment, heat recovery steam generators, duct burners, a backup boiler, electrical equipment needed to operate in parallel with the utility grid and ancillary systems, including water treatment and process control systems.
Wastewater treatment facilities are an ideal application for DFC power plants, the company said, because they can operate on anaerobic digester gas, which is classified as a renewable fuel and are eligible for government incentive funding in many locations.