Removal of Sulphur Dioxide from Exhaust Sulphurous Flue Gases at Shree Cement Ltd., Beawar for Environment Cleaning

Laboratory studies were conducted to know about the effect of pH of sodium hydroxide solution and its temperature for absorption of SO₂ contained in flue gases. it was found that the pH of the solution should be alkaline for good absorption of SO₂. Because of the acidic nature of SO₂, the reaction is restricted in acidic solution. and maximum absorption of SO₂ was found in temperature range between 20-25°C. At higher temperature reversible reaction may take place and partially formed product may be changed back into initial reactants.