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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 11, No. 4, 2007, pp. 67-69
Bioline Code: ja07097
Full paper language: English
Document type: Research Article
Document available free of charge

Journal of Applied Sciences and Environmental Management, Vol. 11, No. 4, 2007, pp. 67-69

 en Studies on the Effect of Temperature on the Sedimentation of Insoluble Metal Carbonates
Mkpenie, Victor N.; Ebong, Goddy & Abasiekong, Beauty

Abstract

The effect of temperature on the sedimentation rate of some insoluble metal carbonates has been investigated in this work. The sedimentation constants show that a 20°C rise in temperature typically doubles the rate of sedimentation. Cadmium carbonates have higher sedimentation constants while nickel had the lowest sedimentation constants. The order of sedimentation does not seem to have any dependence on temperature. The minimum energy needed to activate the sedimentation process was higher for Zn2+, 67.90kJmol-1 and lowest for Ni2+, 25.5kJmol-1. The dependence of the metal carbonates on temperature follows the order Zn2+ > Cd2+ >Cu2+ > Co2+ > Ni2+.

 
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