Calculate the total theoretical oxygen demand (mg/L) of a solution containing 750 mg/L of C5H7O2N. Also,...

Calculate the total theoretical oxygen demand (mg/L) of a solution containing 750 mg/L of C5H7O2N. Also, calculate Carbonaceous ThOD and Nitrogenous ThOD separately

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Expert Solution

Total theoretical oxygen demand: It is defined as the amount of oxygen required to oxidize a compound or a particular organic substance to its final oxidation product as calculated from stoichiometric considerations.

MW of biomass ()= 113 g/mole
1 ppm = 1mg/l
= 750mg/l = 750ppm

a) Theoretical carbonaceous oxygen demand (CBOD) : only C changes oxidation state and N is released as ammonia (NH3):

b) Theoretical nitrogenous oxygen demand (NBOD): Ammonia is oxidized to nitrate (NO3-):

c) Total theoretical oxygen demand (Total ThOD):

Total ThOD = CBOD + NBOD = 1062+424.7775 = 1486.7775 mg/l.

This is the final answer.

Amanda K answered 1 year ago

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