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Environmental Engineering Research 2002;7(1): 33-37. DOI: https://doi.org/10.4491/eer.2002.7.1.033
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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