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Bio Gas

Biogas typically refers to a gas produced by the biological breakdown of organic matter in the absence of oxygen. Biogas methane can readily be produced by feeding algal biomass into anaerobic digesters in which the algae are digested by anaerobes.

The biogas produced comprises primarily methane and carbon dioxide and may have small amounts of hydrogen sulphide, moisture and siloxanes. The solid by-product can be used as a biofuel or as a fertiliser.

The gases methane, hydrogen and carbon monoxide can be combusted or oxidized with oxygen. This energy release allows biogas to be used as a fuel for any heating purpose, such as cooking.

It can also be used in anaerobic digesters where it is typically used in a gas engine to convert the energy in the gas into electricity and heat. Biogas can be compressed, much like natural gas, and used to power motor vehicles. In the UK, for example, It is estimated to have the potential to replace around 17% of vehicle fuel. Biogas is a renewable fuel, so it qualifies for renewable energy subsidies in some parts of the world.

Biogas anaerobic digesters can be fed with energy crops such as algae biomass. During the process, an air-tight tank transforms biomass waste into methane producing renewable energy that can be used for heating, electricity, and many other operations that use any variation of an internal combustion engine.

Biogas can be utilised for electricity production; cooking; space heating; water heating; and process heating. If compressed, it can replace compressed natural gas for use in vehicles, where it can fuel an internal combustion engine or fuel cells.

Methane within biogas can be concentrated via a biogas upgrader to the same standards as fossil natural gas and becomes biomethane for potential local gas distribution networks. Gas must be very clean to reach pipeline quality, and must be of the correct composition to be accepted for a gas network. Carbon dioxide, water, hydrogen sulfide and particulates must be removed if present. If concentrated and compressed it can also be used in vehicle transportation. Compressed biogas is becoming widely used in Sweden, Switzerland, and Germany. A biogas-powered train has been in service in Sweden since 2005. Biogas has also powered automobiles.

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Algal Sequestration Algal Sequestration utilises abundant sunlight, captured flue gases, and waste water to grow valuable algal biomass on a large scale and on a continuous and fully enclosed and controlled basis. Read more ∇		‘BAGS’ System MBD has developed its own method of culturing photosynthetic organisms for large scale production. The ‘BAGS’ system is a unique solution to to large scale algae cultivation and harvest. Read more ∇
Strain selection Identification and management of the optimum algae strain for top performance in any given emitter location is vital to optimising yields and production earnings. MBD's research team has developed solutions to strain selection Read more ∇		Oil Extraction MBD has an exclusive Australasian agreement with US company OriginOil Inc which has developed cost-effective high speed extration that reduces harvesting to a single step. Read more ∇