The Cascade Biocoil was a science project first introduced to Cascade in 1993 by a group of four girls who called themselves the Sewage Sisters. Over the years, the Biocoil has grown and developed from a portable outdoor system to a smaller indoor 3-coil system with holding tank. We are now currently redesigning our system again to a completely different system with free standing Conical Bottom tanks.


This system will also allow us to compare our two different strains of algae, Chlorella and Botryococcus Braunii, not only by their growth rate, but by how fast they use and remove CO2, nitrates, phosphates, and other nutrients. After the algaes are harvested we can then determine and compare their energy concentrations, biodiesel efficiency, and lipid content by using a gas chromatograph, soxhlet, calorimeters, and the process of transesterfication.


The Biocoil project is made up of one sophomore, four juniors, and one senior. Ashley Evers is the sophomore. The four juniors are Matthew Bingman, Eve Weston, Tessa Stocks, and Allison Tangen. Zach Walter is the senior leader of the group this year.