INORGANIC METAL POLYMERS - PREPARATION AND CHARACTERIZATION

One method to improve the effectiveness of inorganic metal coagulants in water treatment is to partially neutralize concentrated metal-salt solutions prior to their addition to the raw water and thus preform po lymeric metal species, the actual coagulants. In this way coagulant ch emistry can be controlled and proper solution conditions for the forma tion of desired coagulant species can be maintained. This article comp ares polymeric preparations of aluminum and ferric chloride salts with respect to preparation parameters and the extent and stability of pol ymerization.