Determination of sedimentation rates of cobalt II insoluble compounds and absorption coefficients of the sedimenting particles using gamma radiation

Studies on the sedimentation rates of cobalt II insoluble compound show that the chromate and sulphide have higher sedimentation rates of 4.38 cm/sup 3/ min/sup -1/ and 5.90 cm/sup 3/ min /sup -1/ respectively while the cyanide had the lower sedimentation rate of 0.230 cm /sup 3/ min/sup -1/. The cyanide, chromate and sulphide show first order sedimentation while the carbonate and hydroxide show half order sedimentations. The sedimentation constant increases with increase in sedimentation rate. (author)