Sedimentation Profile of Strontium Phosphate Precipitate in Aqueous Medium

Abstract

Batch-wise precipitation and sedimentation tests were conducted and
diagrams (profiles) describing strontium phosphate (SrP) precipitate
sedimentation in aqueous medium were drawn with respect to
strontium ions to phosphate ions volume combination. Profiles
corresponding to 40:60 and 50:50 strontium ions to phosphate ions
volume combinations produced slow SrP precipitate sedimentation
comprising of three regions (initial, hindered and compression). On
the other hand, fast SrP precipitate sedimentation consisting of only
two regions (hindered and compression) was produced by the 20:80
and 80:20 strontium ions to phosphate ions volume combinations.
The observations have been discussed as due mainly to nature of
precipitate formed as well as the interactions of the particle with the
aqueous medium.