Archive for the ‘Calculation of COD’ Category

What is Chlorine Disinfection?

CHLORINE DISINFECTION

Chlorine deactivates microorganisms through several mechanisms that can destroy most biological contaminants, including: Chlorine Formula

  • Damaging the cell wall 
  • Altering the permeability of the cell (the ability to pass water in and out through the cell wall) • Altering the cell protoplasm
  • Inhibiting the enzyme activity of the cell so it is unable to use its food to produce energy
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Calculation of Chemical Oxygen Demand (C.O.D)

Calculation of Chemical Oxygen Demand (C.O.D)

Apparatus:

Round bottom flask, water condenser, Burette, Pipette,Heating mantle.

Reagents:

* Mercuric sulphate (< 1gm)

* Sulfuric Acid (1 Kg H2SO4 + 5.5 gm Ag2SO4 ) dissolve for 24 hrs.

* 0.25 N Potassium Dichromate (12.259 gm K2Cr2O7 dried at [....]