dissolved oxygen

The activated carbon prepared from the bark of Ocimum Tenuiflorum reduces the amount of dissolved oxygen (DO) present in distilled water, which in turn reduces the rate of corrosion. The effects of DO, temperature and pH on the rate of mild steel corrosion were discussed. The inhibition efficiency of corrosion on mild steel was estimated by weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The inhibition efficiency increases with increase in temperature, pH and the mass of activated carbon.

The removal of dissolved oxygen (DO) from water was studied using anion exchange resin AV-17-8 in a sulphite form. The effects of various operating conditions, such as water flow rates, height of the resin bed and mineralization of water on the removal of DO have been studied extensively. It was shown that its reducing ability depends on the water ionic composition that affects the desorption rate of the sulphite anions. The possibility of efficient water deoxygenation at ambient temperature was demonstrated.