A STUDY ON REMOVAL OF Pb2+ ION USING PELLET-TYPE RED MUD ADSORBENTS |
Jung-Sik Kim1, Sang-Won Han1, In-Gook Hwang1, Jae-Heum Bae1†, and Shuzo Tokunaga2 |
1Department of Chemical Engineering, The University of Suwon, Kyonggi-Do 445-443, Korea 2National Institute of Materials & Chemical Research, Tsukuba, Ibaraki 305, Japan |
Corresponding Author:
Jae-Heum Bae ,Tel: +82-31-220-2360, Fax: +82-31-220-2528, Email: jhbae@mail.suwon.ac.kr |
Received: April 6, 2001; Accepted: December 6, 2001. |
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ABSTRACT |
The two kinds of pellet-type red-mud adsorbents (bead-type, crushed-type) were made from red mud, which is generated as a by-product during the production of aluminum hydroxide from bauxite ore. The adsorption experiments of Pb2+ ion in the aqueous solution by these red-mud adsorbents were studied with a continuous adsorption column. As a result, the crushed-type adsorbent shows better performance in adsorption of Pb2+ than the bead-type adsorbent between the two types of the pellet-type adsorbents. The continuous adsorption experiment shows that the pellet-type adsorbents made from red mud have good performance for removal of Pb2+. The breakthrough curves of the red-mud adsorbents were compared with that of activated carbon. |
Keywords:
adsorption | Pb2+ ion | recycling of waste materials | red mud |
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