Bioreactors: A Crucial Practice in Nutrient Reduction for Iowa

Bioreactors: A Crucial Practice in Nutrient Reduction for Iowa

On a warm summer evening in July, landowners, farmers, and community citizens gathered together at Iowa State’s Field Extension Education Laboratory to learn what they can about the benefits and a little science behind denitrifying bioreactors. A denitrifying bioreactor is a subsurface trench at the edge of a field usually filled with hardwood chips, installed to reduce nitrate concentration in the tile water that it diverts. The wood chips are the carbon source that contains the bacteria needed to breakdown the nitrates in the water to convert into nitrogen gas.   The participants were able to see a bioreactor in action and heard from Iowa Learning Farms expert, Liz Juchems about the benefits to having a bioreactor and how it can help in the effort to improving water quality. She explained that using bioreactors alone in the state in all of the identified appropriate areas would reduce the nitrates that end up in our waterways by 43%, which exceeds the 41% goal...
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