Fluidization of Aluminum Hydroxide Gels Containing Xanthan Gum

Abstract

Suspensions of aluminum hydroxide dried gel interacted with xanthan gum to form a thick coagulum. Addition of low concentrations of deflocculants (sodium tripolyphosphate, sodium citrate, potassium phosphate dibasic) prevented coagulum formation. Sorbitol, 5%, was also effective. Suspensions made from a fluid aluminum hydroxide concentration did not become coagulated in the presence of xanthan gum.