Results showed that the removal increased with an
increase in coagulant dosage until it reached an optimum value, the removal started to decrease. This could be
attributed by the restabilization of colloidal particulates when coagulants were used at dosages in excess of the
optimum value (Aygun & Yilmaz, 2010). With the addition of larger dosage of the coagulant, the surface charge of
the particles gets reversed due to continued adsorption of mono- and polynuclear hydrolysis species of coagulant. As