抄録
Porous and dense hydroxyapatites were prepared at 900 to 1300°C in air atmosphere by the pressureless sintering technique. In the present paper, the usage of these synthesized hydroxyapatites ceramics and porous hydroxyapatite from the cattle bone as an industrial waste was attempted with a view to the removal of Cd2+ion from the polluted water. The pore characteristics of these hydroxyapatites sintered ceramics and cattle bone were evaluated by the mercury porosimeter. Especially, the ability of Cd2+ ion into these hydroxyapatites ceramics with various types of microstructures was investigated by an ICP equipment. Cd removability of HAp in 100 ppm Cd solution at pH 6.5 was twice higher than that of the active carbon. Especially, porous HAp and massive cattle bone possessed higher ability, compared to dense HAp, because of their high surface area.
