Determination of the Range of Anoxic Half Saturation Coefficients for Methanol
Abstract:Efficient use of methanol to improve denitrification depends primarily on reducing the amount that is inevitably lost (bled) from anoxic reactors. At low concentrations the rate of methanol use by methylotrophic bacteria slows down. This results in costly overdose and process pollution issues. The methanol utilization rates under these conditions primarily depend on the Monod half-saturation concentration (KS). A method was developed to measure low methanol concentrations in laboratory scale anoxic batch reactors. Detailed gas-chromatographic (GC) measurements show that in this series the methanol KS varied over a range from 0.13 to 2.35 mg COD/L. This information can be used to design and operate plants that handle methanol dosing in an optimal way.
Document Type: Research Article
Publication date: January 1, 2011
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