Algae Power Station

Algae Enterprises (AE) has developed the Algae Power Station (APS).

The APS supplies renewable energy by integrating an advanced algae biomass cultivation system with an anaerobic digester for methane generation as a biofuel. GHG emissions are drastically reduced by providing a wastewater treatment method that produces several times more energy than it consumes.  In addition, AE's APS is more advanced and suited towards algae biomass production in wastewater environments than other algae systems.


 

 

Nitrogen (N) and phosphorus (P), are stripped from wastewater during algae growth and are exported as biosolids with the potential to be used as a valuable fertiliser while remaining energy positive. This is in stark contrast to conventional N and P removal that requires energy intensive Activated Sludge Processes (ASP), emitting nitrous oxide (N2O) and chemical phosphorus removal that renders nutrients unsuitable for further use.

AE's algae technology has been developed to cultivate algae biomass in a wastewater environments taking into account the low-light penetration in untreated waste streams and the need to increase algae yields to achieve commercial viability. Other algae systems, such as open ponds or raceway-type designs, perform poorly when wastewater is applied rather than clear, synthetic nutrient media.

Using our patented PAS technology we produce more algae with less energy. AE has developed an algae cultivation technology to directly address issues of scalability and the commercial viability of generating algae biomass as an energy crop. 

We have demonstrated the use of anaerobic digesters to convert the algae biomass into biogas, with methane as the primary component. The biogas can be used to generate electricity using a biogas generator. What remains after biogas generation is a nutrient rich fertiliser product that can be used directly on crops, pastures or to generate even more algae.  There is enough renewable energy creation potential in such a system to support the entire farm or Waste Water Treatment Plant (WWTP) and many times more than that to be sold back to the grid where the algae cultivation and digester components are maximised.  In areas that have no power grid, this serves to provide a constant clean energy source using wastewater as the primary input.

Algae, when cultivated and harvested in sufficient quantity on industrial scale, can be used as a feedstock for any of the currently known energy and fuel technologies including:

  • bio-diesel by conversion of oils via Esterification
  • bio-ethanol by fermentation of cellulose
  • bio-crude to then be processed further by standard petroleum refinement producing LPG, petrol, diesel, jet fuel, plastics, chemicals etc.
  • bio-gas, i.e. methane
  • Hydrogen fuel via direct gasification

Algae Enterprises recently presented in the BioEnergy Australia conference.  Professor Borowitzka, one of the leading Algae authorities in Australia, ran the Algae related stream with lively discussion throughout.

 

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