Kinetics of the chlorination of biphenyl under conditions of waste treatment processes

The chemical kinetics of the chlorination of low concentrations of biphenyl dissolved in water are surveyed. Biphenyl was chosen as the organic reactant because of its wide use and the potential danger resulting from its chlorination products. The ph range investigated was 6.2 to 9.0. Results indicate that acid catalysis occurs below a ph of 6.2, where highly reactive molecular chlorine is present. The rate of formation of chlorobiphenyls is so slow tht little concern for health or the environment is warranted on the basis of these findings.