Effect of Rainfall Intensity on Acid Rain Formation by Absorption-Dissociation of Sulfur Dioxide

Abstract

Acid rain is a water pollution event and is a typical instance of the interenvironmental pollution which is induced in return for the purification of atmospheric pollutants such as sulfur dioxide and nitrogen oxide. These pollutants are absorbed into and dissociated in rain drops to increase hydrogen ion, i. e., rain acidity. A mathematical model for the scavenging and dissociating of sulfur dioxide to form acid rain has been developed. The model simulation shows that both of rainfall intensity and initial pH have important effects on the acid rain formation.