The DOI matches its Crossref record; 16 of the 16 references it cites were found in a registry or an index.
Study of a Heavy Metal Biosorption onto Raw and Chemically Modified Sargassum sp. via Spectroscopic and Modeling Analysis
Abstract
In this study, raw and formaldehyde-modified Sargassum sp. are used for heavy metal removal. A series of experiments shows that the chemical modification by formaldehyde improves biosorption capacity by approximately 20%. Solution pH plays an important role in the metal uptake. According to X-ray photoelectron spectroscopic and Fourier transform infrared spectroscopic analysis, the possible organic functional groups in the metal binding include carboxyl, ether, alcoholic, hydroxyl, and amino functional groups. A new model that includes a series of coordination reactions among a generalized functional group, alkaline earth metal ions and heavy metal ions, is developed for simulation of biosorption process. The model well describes the single- and multiple-species metal biosorption process under different conditions such as pH. The biosorption of heavy metals is due to the ion exchange between the heavy metals and alkaline earth metals and their adsorption onto the free sites of the seaweeds. Slightly more than half of the metal uptake is due to ion exchange. The metal affinity for the functional groups follows a descending order of lead > copper > alkaline earth metal.
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“Thus, shift in spectral peaks after Cr(VI) sorption by both biochars could be attributed to ion exchange mechanism in which functional groups exchanged Cr(VI) ions on the surface of biochars as reported previously [69].”
From Adsorption-reduction performance of tea waste and rice husk biochars for Cr(VI) elimination from wastewater (2020) · cites this paper as [69]
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Research works printed but not linked: 7
- Chen J. P., 2002, Langmuir, 18, 9421
- Chen J. P., 2005, Ind. Eng. Chem. Res., 44, 9942
- Ma W., 2003, Water Res., 37, 3977
- Yun Y.-S., 2003, Environ. Sci. Technol., 37, 3608
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Removal of heavy metals from aqueous solutions using Fe3O4, ZnO, and CuO nanoparticles
Mahdavi, S., Jalali, M., & Afkhami, A. (2012) · Journal of Nanoparticle Research · doi:10.1007/s11051-012-0846-0 · Cited by 213
Khalil, U., Bilal Shakoor, M., Ali, S., Rizwan, M., Nasser Alyemeni, M., & Wijaya, L. (2020) · Journal of Saudi Chemical Society · doi:10.1016/j.jscs.2020.07.001 · Cited by 139
“Thus, shift in spectral peaks after Cr(VI) sorption by both biochars could be attributed to ion exchange mechanism in which functional groups exchanged Cr(VI) ions on the surface of biochars as reported previously [69].”
Metadata
- Authors
- Chen, J. P., & Yang, L.
- Affiliations
- National University of Singapore (SG)
- Venue
- Langmuir
- Publisher
- American Chemical Society (ACS)
- Published
- 2006-09-13
- Volume
- 22
- Issue
- 21
- Pages
- 8906-8914
- ISSN
- 0743-7463 (ISSN-L)
- 1520-5827
- OpenAlex
- W2095452416
- Cited by
- 153
- References
- 16
- Citations by year
- 2026: 2 · 2025: 3 · 2024: 5 · 2023: 3 · 2022: 7 · 2021: 3 · 2020: 7 · 2019: 6 · 2018: 4 · 2017: 10 · 2016: 8 · 2015: 9 · 2014: 12 · 2013: 16 · 2012: 14
- FWCI
- 7.52
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Langmuir (publishedVersion)
- PubMed (publishedVersion)
- National University of Singapore (submittedVersion)
- Topics
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Physical Sciences › Environmental Science › Water Science and Technology › Heavy Metal Pollution Remediation
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Seaweed-derived Bioactive Compounds
- Keywords
- heavy metal biosorption, Sargassum, formaldehyde modification, seaweed, ion exchange, alkaline earth metals, functional groups, metal ion binding, pH effect, lead, copper, metal binding affinity
- MeSH terms
- Formaldehyde, Hydrogen-Ion Concentration, Ions, Models, Biological, Potentiometry, Spectrum Analysis, Molecular Structure, Titrimetry, Biomass, Metals, Heavy, Sargassum
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