Corn Cobs as Carbon Source for Bioreactors
Title: Corn cobs as an alternative carbon source to enhance bioreactor performance for improved water quality
Location: Iowa State University Ag Engineering and Agronomy Farm, Boone, IA
Time Period: 2018-2020
Research Team: Michelle Soupir, Ji Yeow Law, Thomas Isenhart, Morgan Davis, Natasha Hoover, and Alexis Slade
Project Description: In 2018, the six of the nine pilot-scale bioreactors at the Experimental Tile Drainage Denitrification Bioreactors site were modified with the addition of corncobs. Woodchips were excavated from the inlet end ¼ of three bioreactors and ¾ of another three bioreactors, then refilled with corncobs. The study will focus on differences in nitrate (NO3-N) removal with the more readily available carbon provided by the corn cobs and changes in microbial communities, as well as a techno-economic analysis (TEA) evaluating the feasibility of corncobs as a replacement for the current go to fill material of woodchips.
Funders: Iowa Nutrient Research Center , Green Products Company
Disclaimer: This is an active research site, please contact the research team prior to planning any site visits.