Biosorption of Heavy Metals onto Sphagnum Peat Moss
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- Seki Hideshi
- Division of Marine Life Science, Graduate School of Fisheries Sciences, Hokkaido University
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- Yu Kefeng
- Division of Marine Life Science, Graduate School of Fisheries Sciences, Hokkaido University
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- Maruyama Hideo
- Division of Marine Life Science, Graduate School of Fisheries Sciences, Hokkaido University
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- Suzuki Akira
- Division of Marine Life Science, Graduate School of Fisheries Sciences, Hokkaido University
Bibliographic Information
- Other Title
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- 水苔由来ピートモスによる重金属イオンのバイオソープション
- ミズゴケ ユライ ピートモス ニ ヨル ジュウキンゾク イオン ノ バイオソープション
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Abstract
Biosorption of Cd2+ and Pb2+ onto sphagnum peat moss was investigated. The mole numbers and acid dissociation constants of metal-binding sites (carboxyl and phenolic hydroxyl groups) were determined by potentiometric titration. The Cd2+ and Pb2+ adsorption data were analyzed using two different adsorption models. The models were based on the acid dissociation reactions of acidic sites and the monodentate or bidentate binding reactions of bivalent metal ions to acidic sites. The results showed that the biosorption of bivalent metal ions onto peat moss followed the bidentate adsorption model. The number of acidic sites of peat moss was about 1.5 mmol·g−1, so that the saturated adsorption amount of bivalent metal ions was 0.75 mmol·g−1. It was also shown that the adsorption process of Cd2+ and Pb2+ followed pseudo-second-order kinetics.
Journal
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- KAGAKU KOGAKU RONBUNSHU
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KAGAKU KOGAKU RONBUNSHU 32 (5), 409-413, 2006
The Society of Chemical Engineers, Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001204510304256
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- NII Article ID
- 10018243769
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- NII Book ID
- AN00037234
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- COI
- 1:CAS:528:DC%2BD28Xht12rsrbJ
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- ISSN
- 13499203
- 0386216X
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- HANDLE
- 2115/44075
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- NDL BIB ID
- 8521940
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed