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Removal of cadmium (II) from simulated wastewater by ion flotation technique
Open accessAbstract
A separation technique which has recently received a sharp increase in research activities is “ion flotation”. This technique has four important advantages for treating wastewaters: low energy consumption, small space requirements, small volume of sludge and acting selectively. The present study aims to optimize parameters of ion flotation for cadmium removal in simulated wastewater at laboratory scale. It was obtained on the reaction between Cd 2+ and sodium dodecylesulfate (SDS) collector followed by flotation with ethanol as frother. Test solution was prepared by combining the required amount of cadmium ion, SDS and necessary frother or sodium sulfate solution. All experiments were carried out in a flotation column at laboratory temperature (27°C), adjusted pH = 4 and 120 minutes. The different parameters (namely: flow rate, cadmium, SDS and frother concentrations and ionic strength) influencing the flotation process were examined. The best removal efficiency obtained at a collector-metal ratio of 3:1 in 60 min with flow rate of 150 mL/min was 84%. The maximum cadmium removal was 92.1% where ethanol was introduced at a concentration 0.4% to flotation column with above conditions. The obtained results were promising, as both cadmium and collector were effectively removed from wastewater. Hence, the application of ion flotation for metal ions removal from effluents seems to be efficient.
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“The ion flotation process showed low-energy consumption, limited volume demands, reduced sludge volumes, and selective treatment 96 .”
From Removal of heavy metal ions from wastewater: a comprehensive and critical review (2021) · cites this paper as [96]
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Removal of heavy metal ions from wastewater: a comprehensive and critical review
Qasem, N. A. A., Mohammed, R. H., & Lawal, D. U. (2021) · npj Clean Water · doi:10.1038/s41545-021-00127-0 · Cited by 2,225
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Metadata
- Authors
- Salmani, M. H., Davoodi, M., Ehrampoush, M. H., Ghaneian, M. T., & Fallahzadah, M. H.
- Affiliations
- Shahid Sadoughi University of Medical Sciences and Health Services (IR)
- Tehran University of Medical Sciences (IR)
- Corresponding author
- Salmani, Mohammad Hossein
- Davoodi, Mojtaba
- Ehrampoush, Mohammad Hassan
- Ghaneian, Mohammad Taghi
- Fallahzadah, Mohammad Hossein
- Venue
- Iranian Journal of Environmental Health Science and Engineering
- Published
- 2013-02-07
- Volume
- 10
- Issue
- 1
- Pages
- 16-16
- ISSN
- 1735-1979 (ISSN-L)
- 1735-2746
- PMC
- PMC3691621
- OpenAlex
- W2150881830
- Cited by
- 93
- References
- 20
- Citations by year
- 2026: 5 · 2025: 9 · 2024: 7 · 2023: 5 · 2022: 10 · 2021: 11 · 2020: 6 · 2019: 11 · 2018: 5 · 2017: 5 · 2016: 7 · 2015: 7 · 2014: 2 · 2013: 2
- FWCI
- 5.00
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Journal of Environmental Health Science and Engineering (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Funders
- Shahid Sadoughi University of Medical Sciences
- Topics
- Physical Sciences › Chemical Engineering › Filtration and Separation › Minerals Flotation and Separation Techniques
- Physical Sciences › Environmental Science › Water Science and Technology › Coagulation and Flocculation Studies
- Physical Sciences › Environmental Science › Water Science and Technology › Heavy Metal Pollution Remediation
- Keywords
- ion flotation, cadmium removal, heavy metal wastewater treatment, sodium dodecyl sulfate, column flotation, process parameter optimization, ionic strength, synthetic wastewater
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