25 September 2021

The Biogas Compressor

Complete On-Site Biogas Recovery and Upgrade Compressor Solutions

The collection of gas from anaerobic fermentation, which would otherwise produce methane emissions from landfills, dairies/cattle feedlots, and wastewater facilities, not only eliminates methane emissions into the atmosphere, but it may also be a source of additional revenue and profit for the operator.

Biogas derived from biodegradable materials has the potential to be compressed and used as a lucrative renewable fuel source.

It makes sense to accomplish this and sell the biogas in a purified form for optimum return on investment for purposes such as road car fuel.

Several companies are proposing solutions to the difficult gas compression equipment required to market the resultant biomethane fuel product. There are a number of turnkey systems available for on-site biogas recovery and upgrading, including appropriately designed biogas compressor and blower kits.

Image with the text: "Biogas Compressor".


Compressor and Blower Packages for Biogas

To fill gas cylinders for sale or inject biomethane into the natural gas grid, the biogas plant operator will require a specialised biogas blower and compress package.

In North America, Applied Compression is an example of a company that provides a wide range of low, medium, and high-pressure compressor and blower systems.

Their packages range in size from 3 hp to about 750 hp and are intended for corrosive digester gas applications. They are designed to resist pressures ranging from zero to 5,000 PSIG.

According to them, their engineers have leveraged their company's over 50 years of experience in gas separation and compression to become biogas and landfill gas specialists.

Their speciality is said to be a custom-engineered blower, gas compressor, and dehydration systems customised to their client's specific needs.

Compressors for Biogas / Biomethane for Europe / Global

Hundreds of compressors deployed in biogas and biomethane production plants around Europe and the world, we believe, have positioned Fornovo Gas S.p.A. as a world leader in green energy excellence.

Biogas may be generated by fermenting biomass, such as wet municipal waste. To obtain raw biogas, the biomass is passed through a fermentation tank (Continuously Stirred Tank Reactor or CSTR). A low-pressure compressor then transports the biogas to the upgrading system. Greater pressure is necessary after upgrading for gas grid injection or filling cylinders.

Biogas compressors by Aerzen are offered for biogas applications. Whether you need to generate biomethane, feed kilometre-long supply networks, or provide intake pressure for combined heat and power plants. 

Because of the corrosive character of the gas and the high pressures that may be necessary, compressor technology is put to the test in biogas applications.

The Aerzen biogas compressor Series C is an oil-free screw compressor available in three sizes for volume flows of up to 1900 m3/h and overpressures of up to 3,5 bar. It is ideal for increasing the input pressure of biogas treatment facilities or as a vital component of biogas injection plants for compressing biomethane to inject into gas networks.

The development expertise of this international market leader, Aerzen, serves as the foundation for this since Aerzen has, we understand, invented, optimised, and delivered effective compressors since 1943.

19 September 2021

Is Biogas Carbon Neutral? - What Is Carbon Neutrality of Anaerobic Digestion?

Biogas is a carbon-neutral fuel source. Is this true, however, for biogas utilization?


We can certainly state that biogas is carbon neutral, but the key difficulty is how to identify and maximize the potential for reduced GHG emissions from biogas use.

After all, carbon neutrality isn't going to help us battle climate change. If the biogas business is to assist cut carbon emissions, it will have to do a lot more than that.

The anaerobic digestion process, which creates biogas, has the potential to produce a "carbon footprint" of fossil fuel energy consumption, which, when combined together, works against the gas's inherent GHG neutrality. For maximal GHG reversal effects, the size of the footprint must be kept as small as feasible.

Is Biogas Carbon Neutral?

The extent of the "carbon footprint" (non-renewable energy uses that contribute to atmospheric GHGs) is a complicated computation that necessitates processing data from some of the greatest biogas facilities.

That is why we are glad to reproduce the following ADBA Press Release, which highlights current Bath University research:

The existing and prospective carbon footprints of AD are highlighted in an academic research.

A recent report from Bath University identifies the potential for biogas use to reduce GHG emissions.

In Wiltshire, Malaby Biogas' Bore Hill Farm Biodigester was featured in a research project sponsored by Supergen Bioenergy Hub and published by Bath University.

Using real-world data from 2019, the report shows how food waste recycling may significantly improve the climate advantages of renewable energy and green fertilizer for farms.


Previous work established the company's carbon-negative status, and this article now details the further greenhouse gas reductions that could be realized as a result of future actions.

This emphasizes the need for anaerobic digestion (AD) as a critical component of the Climate Emergency response.

AD is the unsung hero of the UK renewables boom, with a lack of regulatory backing in the draught Environment Bill and ELMS, as well as continual delays in the Waste and Resources Strategy rollout.

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