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Cited by 335

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Characterization of Copper Adsorption onto an Alginate Encapsulated Magnetic Sorbent by a Combined FT-IR, XPS, and Mathematical Modeling Study

Lim, Soh-Fong, Zheng, Yu-Ming, Zou, Shuai-Wen, Chen, J. Paul·2008·Environmental Science & Technology

Abstract

Copper adsorption onto calcium alginate encapsulated magnetic sorbent is studied in this paper. The objective of this study was to qualitatively and quantitatively elucidate the copper binding onto the sorbent. The adsorption increases from around 0 to almost 100% as the initial pH is increased from 2 to 5. A maximum adsorption capacity of 0.99 mmol g(-1) is achieved. The FT-IR and XPS studies show that the C-O in carboxyl group of alginate directly attaches to the copper ion that leads to most of the adsorption. A mathematical model is developed, and it includes ion exchange between the calcium and the copper, coordination reaction between the functional group and the copper, as well as surface complex formation between the iron oxide and the copper. The model is capable of describing and predicting effects of various key operational parameters on the adsorption process, such as initial pH, metal concentration, and dosage of sorbent.

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Metadata

Authors
Lim, S.-F., Zheng, Y.-M., Zou, S.-W., & Chen, J. P.
Venue
Environmental Science & Technology
Published
2008-03-01
Volume
42
Issue
7
Pages
2551-2556
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
OpenAlex
W2014717973
Cited by
335
References
1
FWCI
15.39
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Characterization of Copper Adsorption onto an Alginate Encapsulated Magnetic Sorbent by a Combined FT-IR, XPS, and Mathematical Modeling Study. https://app.cochat.ai/papers/10.1021/es7021889
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Lim, S.-F., Zheng, Y.-M., Zou, S.-W., & Chen, J. P. (2008). Characterization of Copper Adsorption onto an Alginate Encapsulated Magnetic Sorbent by a Combined FT-IR, XPS, and Mathematical Modeling Study. Environmental Science & Technology. https://doi.org/10.1021/es7021889

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