Algae, while not well understood, offer a vast range of nutritional and other benefits -- such as production of biofuels, proteins for human and animal consumption, protein/enzyme for high value products in the pharmaceutical cosmetic or nutriceutical industries, or nitrogen/protein sources in organic fertilizers.
Some algae have higher percentages of lipids and fatty acids, but lower levels of proteins. Others have much higher protein content, but would produce lesser amounts of oils.
The purposeful production of specialized algae with diverse benefits is an essential component of the IOE System.
After gases from earlier steps in the
IBERP system have been combusted to generate electricity, the hot exhaust gases are captured and directed through a heat exchanger. The recovered energy is utilized in other portions of the IBERP system, including heating of digesters, raising water temperature for increased algal growth or in a heat conversion mode to cool finished product.
The waste gas, almost 90% of which is carbon dioxide, is dispersed in algae production units where they are absorbed in the liquid and ultimately converted, through photosynthetic processes, to algae. The bi-product is oxygen gas, which is released to atmosphere.
In this manner, methane gas is converted to CO2, which is fed to algae and used to grow algal mass. Doing so breaks the carbon from the oxygen and creates plant carbohydrates and proteins. Minerals and nutrients are used in growing algae, water is cleaned to usable form, and pure oxygen is released as the algae grow.
As the algae mass reaches sufficient quantity, a continuous harvest sequesters it for further processing, and the water is recycled to earlier steps in the IBERP system.
At this point, further carbon credits will be earned, as the algal conversion from CO2 into oxygen and plant material truly reduces methane and carbon emissions to atmosphere.