%0 Journal Article
%T SYNTHESIS AND CHARACTERIZATION OF CALCIUM PHOSPHATE AND ITS RELATION TO CR(VI) ADSORPTION PROPERTIES
%A RAJEEV KR. JHA
%J Review of Research
%D 2012
%I 
%X Calcium phosphate with hydroxyapatite structure was synthesized and its ability to adsorb Cr(VI) from aqueous solution is presented. XRD, BET, IR, TGA, SEM and EDS techniques were used to characterize the obtained material. Apure phase was obtained through a simple synthesis process. The specific surface area of the synthesized 2 每1powder was found to be 64.5 m g . The X每ray diffraction pattern shows that the calcium phosphate formed was nanocrystalline with an average grain size of approximately 75 每4nm. Afast adsorption was observed and in less than 24 h it was found that 2.41 x 10 meq 每1g of Cr(VI) ions were adsorbed on calcium phosphate. Desorption experiments showed 每4 每1that Cr(VI) adsorption decreased to 2.23 x 10 meq g of calcium phosphate. This behavior is a consequence of partial dehydration of the synthesized material. Calcium phosphate can be effectively used for removing Cr(VI) from aqueous solutions in treatment processes of metal wastes
%K calcium phosphate
%K synthesis
%K characterization
%K Cr(VI) adsorption
%K surface area
%K adsorption experiments.
%U http://www.reviewofresearch.net/PublishArticles/253.pdf