SULFURIC ACID FOR CONTROLLING CALCITE PRECIPITATION

Abstract
Effects of sulfuric acid applied to irrigation water on pH, Ca++, HCO3-, and H2CO3 status are evaluated based on known relations of carbonate equilibria. Theoretical results are compared with experimental results obtained for waters with salinity classes C2, C3, ad C4 and alkalinity classes S1 and S2 at acid application rates of up to 6 me/liter. Results indicate that the theoretical analysis presented may be useful for calculating the amount of acid needed to prevent calcium precipitation as well as for predicting changes in pH and the above ion species upon the addition of sulfuric acid within the tested range. Effects of sulfuric acid applied to irrigation water on pH, Ca++, HCO3-, and H2CO3 status are evaluated based on known relations of carbonate equilibria. Theoretical results are compared with experimental results obtained for waters with salinity classes C2, C3, ad C4 and alkalinity classes S1 and S2 at acid application rates of up to 6 me/liter. Results indicate that the theoretical analysis presented may be useful for calculating the amount of acid needed to prevent calcium precipitation as well as for predicting changes in pH and the above ion species upon the addition of sulfuric acid within the tested range. © Williams & Wilkins 1975. All Rights Reserved.

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