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Biosorption of Cr(III) ions by eggshells
Abstract
The paper presents results of studies carried out on sorption of Cr(III) ions from aqueous solutions by eggshells as a low-cost sorbent. It was found that crushed eggshells possess relatively high sorption capacity, when comparing with other sorbents, that was evaluated as 21-160 mg/g. The effect of process parameters: pH, temperature, initial concentration of Cr(III) ions on the process kinetics was studied. It was found that the equilibrium of the process was reached after 60 min. Also equilibrium studies were performed: the effect of sorbent concentration and equilibrium Cr(III) concentration was studied. The maximum experimentally determined sorption capacity 160 mg/g was obtained at low sorbent concentration at 20 degrees C and pH 5. It was found that sorption capacity increased with the increase of Cr(III) concentration, temperature and sorbent concentration. Mathematical models describing kinetics and equilibrium of sorption were proposed. The process kinetics was described with pseudo-second-order pattern and equilibrium was described with Langmuir-type equation, and the influence of sorbate concentration, with an empirical dependence. The models were positively verified. Eggshells were able to remove the concentration of Cr(III) ions below the acceptable level, i.e. at 40 degrees C, at the initial concentration of metal ions 100 mg/kg, at sorbent concentration 15 g/l.
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“Accordingly, there have been a number studies evaluating eggshells as immobilising agents for heavy metals such as chromium(III) and lead [104–106].”
From Progress towards Sustainable Utilisation and Management of Food Wastes in the Global Economy (2016) · cites this paper as [105]
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Cites
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Self-citationXie, J. (1996) · Bioresource Technology · doi:10.1016/0960-8524(96)00059-4 · Cited by 91
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Self-citationChromium in the environment of Finland
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Sorption characteristics of zinc(II) by calcareous soil–radiotracer study
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Metadata
- Authors
- CHOJNACKA, K.
- Affiliations
- Wrocław University of Science and Technology (PL)
- Corresponding author
- CHOJNACKA, K
- ORCID
- CHOJNACKA, K
- Venue
- Journal of Hazardous Materials
- Publisher
- Elsevier BV
- Published
- 2005-05-20
- Volume
- 121
- Issue
- 1-3
- Pages
- 167-173
- ISSN
- 0304-3894 (ISSN-L)
- OpenAlex
- W2037136202
- Cited by
- 190
- References
- 20
- Citations by year
- 2026: 6 · 2025: 9 · 2024: 6 · 2023: 5 · 2022: 7 · 2021: 11 · 2020: 14 · 2019: 8 · 2018: 11 · 2017: 10 · 2016: 14 · 2015: 16 · 2014: 15 · 2013: 15 · 2012: 4
- FWCI
- 7.25
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Hazardous Materials (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Physical Sciences › Environmental Science › Environmental Engineering › Environmental remediation with nanomaterials
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Chromium effects and bioremediation
- Keywords
- biosorption, trivalent chromium, eggshell, low-cost adsorbent, heavy metal removal, sorption kinetics, pseudo-second-order kinetics, Langmuir isotherm, sorption equilibrium, pH effect, temperature effects, sorption capacity, wastewater treatment
- MeSH terms
- Adsorption, Animals, Biodegradation, Environmental, Chickens, Chromium, Egg Shell, Hydrogen-Ion Concentration, Kinetics, Models, Chemical, Temperature, Water Pollutants, Chemical, Water Pollution
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