Algae Systems LLC completed demonstration of a new biofuel production approach in early-August jointly with Japan’s IHI Corporation. The process is based on the conversion of algae and wastewater to energy and clean water. A demonstration plant, located in Daphne Alabama, combines wastewater with algae to produce the world’s first energy-generating wastewater treatment process, using carbon-negative technologies. This process will yield both bio-fuel and drinking water.
Features of the Algae Systems Process – Treating Municipal Wastewater
While algae is a component in a number of worldwide experimental production strategies, this approach will differ by using a system that can apply a variety of algae types to production, adding value by treating wastewater, and producing a drop-in fuel solution using hydrothermal liquefaction to produce fuels that do not need to be blended.
Systems Approach Promotes Algae Growth
The production is being conducted by Algae Systems, LLC., which has operations based in Daphne, Alabama. Algae Systems is a group company of IHI Corporation based on a joint venture partnership with Algae Systems’ founders. The Daphne approach takes local strains of algae to increase production rates and optimize wastewater treatment opportunities. Most companies in the sector, as well as another IHI subsidiary, IHI NeoG (Kawasaki, Representative Tomohiro Fujita) use proprietary strains of algae that have high lipid outputs and need special attention. At Daphne, the approach is focused on a systems approach. Floating membrane photobioreactors accept wastewater from a local community municipal wastewater utility, drawing nutrients from the wastewater to promote algae growth. The algae consume nutrients in the wastewater, reducing the cost of treating wastewater. In this approach, municipal wastewater becomes an asset to produce energy, rather than a commodity to be expensively processed. Photosynthesis— a gift from the Sun— acts to create the chemical reactions that can power our future.
Use of Offshore Photobioreactors Help Lower Amount of Land Use Needed
The use of offshore photobioreactors means that a valuable land footprint would not be required to deploy the system commercially, and the motion of waves and wind provides ideal temperature and mixing controls as well as a reduction of operating costs. From an environmental perspective, ecological dead zones can also be eliminated.
This demonstration plant is just one of a few algae plants throughout the world and will be the first of its kind to create a carbon negative fuel by treating wastewater, making it one of the most sophisticated operational plants that bridge the water-energy nexus and fight global warming.
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