Theoretical considerations on electrocoagulation/fltation process

摘要

This paper presents a general theoretical consideration of the electroco-agulation/-flotation (ECF) process with an electrochemical mechanism occurring in the reactor. To understand how the ECF process works it is important to discuss the mechanism of water electrolysis and other related chemical reactions. The first section presents a synthesis of the ECF technology and mechanism associated with water electrolysis. Several sections discuss information regarding the chemistry and kinetics of removing pollutants when three different mechanisms including, electrode oxidation, gas bubble generation, and flotation and sedimentation of floes formed, interact in the ECF processes. It was found that the kinetics of de-pollution follows the exponential law with time. Towards the end of this research, information regarding the basic equations is included to present a theoretical, as well as empirical model for prediction pollutant removal by the EC process. The chemical theory of batch reactor is used as the basis for development of the empirical model in the following paper.