UPTAKE OF A FEW DIVALENT HEAVY METAL IONIC SPECIES BY A FIXED BED OF HYDROXYAPATITE PARTICELS
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概要
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Breakthrough curves were measured for Cd2+, Cu2+ and Pb2+ in their single, binary and ternary nitrate aqueous solution systems using a fixed bed of hydroxyapatite particles in order to obtain volumetric mass transfer coefficients. Breakthrough curves for Pb2+ showed particular profiles depending on the pH of influent solutions in the bed. For the binary and ternary systems containing Pb2+, the curves for each ion showed that Pb2+ displaced not only calcium but also other co-existent ions which were already collected in the substrate. It was considered that Cd2+ and Cu2+ were collected in the vicinity of the internal surface of particles, but the uptake of Pb2+ occurred in the interior as well as at the internal surface of hydroxyapatite particles.
- 社団法人 化学工学会の論文
- 1994-10-20
著者
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Takeuchi Yasushi
Department Of Applied Chemistry Graduate School Of Engineering Osaka University
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Suzuki Yoshitake
Department Of Industrial Chemistry Meiji University
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