Dear Chad, As per my ...
Published by Akshay Shende
Dear Chad,
As per my knowledge, unreacted or residual Hydrogen Peroxide in a sample is responsible for " False low BOD values ". This is because residual Hydrogen Peroxide liberates oxygen over the test period. 1 mg/L of H2O2 liberate nearly 0.5 mg/L of DO, thus giving false low BOD results. So i think its incorrect to say BOD values are increasing due to Hydrogen Peroxide. However the fact can not be denied that COD increases due to residual H2O2 because it consumes the oxidizing agent Potassium Dichromate giving false high COD values.
As per my knowledge, unreacted or residual Hydrogen Peroxide in a sample is responsible for " False low BOD values ". This is because residual Hydrogen Peroxide liberates oxygen over the test period. 1 mg/L of H2O2 liberate nearly 0.5 mg/L of DO, thus giving false low BOD results. So i think its incorrect to say BOD values are increasing due to Hydrogen Peroxide. However the fact can not be denied that COD increases due to residual H2O2 because it consumes the oxidizing agent Potassium Dichromate giving false high COD values.