Simultaneous adsorption of Cd, Cr, Cu, Pb, and Zn by an iron-coated Australian zeolite in batch and fixed-bed column studies
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A good correlation of three kinetic models (pseudo-first-order, pseudo-second-order, and intra-particle diffusion) for the adsorption of heavy metals like Cr(VI) as well as a mixed solution of Pb, Cu, Cd, Cr(III) and Zn is reported.
“Furthermore, a good correlation of three kinetic models (pseudo-first-order, pseudo-second-order, and intra-particle diffusion) for the adsorption of heavy metals like Cr (VI) (Asgari et al., 2013;Sparks, 2003) as well as a mixed solution of Pb, Cu, Cd, Cr(III) and Zn are reported (Nguyen et al., 2015).”
From Adsorption of heavy metals on natural zeolites: A review (2023) · cites this paper as Nguyen et al., 2015
Section 2.3 identifies Cr(NO3)3 as the chromium source, and Section 3.2.2 reports satisfactory pseudo-first- and pseudo-second-order fits for mixed-metal adsorption. But Section 3.2.2 says the intra-particle diffusion plot was not linear throughout and did not pass through the origin, so the paper does not report a good overall fit for all three models. The sentence cites other works, not Nguyen et al., for Cr(VI). (LLM, conf=0.87)
Experimental — accuracy not yet measuredAfter the second regeneration cycle, a considerable decrease in desorption percentage was observed, possibly due to damage of the ICZ structure by contact with an acidic medium.
“After the second regeneration cycle, they observed a considerable decrease in the desorption percentage because of the possible damage of the ICZ structure by contact with an acidic medium (Nguyen et al., 2015).”
From Adsorption of heavy metals on natural zeolites: A review (2023) · cites this paper as Nguyen et al., 2015
Section 3.3.2 reports lower ICZ desorption ranges in the second cycle (49–85%) than in the first (64–93%). It attributes acid-related dissolution of iron coatings to a decline in adsorption capacity, however, not to the decrease in desorption percentage claimed here. Page numbers are unavailable in our copy. (LLM, conf=0.85)
Experimental — accuracy not yet measuredICZ was regenerated using 0.1 M HCl, and two cycles of regeneration were successfully achieved.
“The ICZ was regenerated using 0.1 M HCl, and two cycles of regeneration were successfully achieved.”
From Adsorption of heavy metals on natural zeolites: A review (2023) · cites this paper as Nguyen et al., 2015
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- Authors
- Nguyen, T. C., Loganathan, P., Nguyen, T. V., Vigneswaran, S., Kandasamy, J., & Naidu, R.
- Affiliations
- University of Technology Sydney (AU)
- University of South Australia (AU)
- Corresponding author
- Vigneswaran, Saravanamuthu
- Venue
- Chemical Engineering Journal
- Publisher
- Elsevier BV
- Published
- 2015-06
- Volume
- 270
- Pages
- 393-404
- ISSN
- 1385-8947 (ISSN-L)
- OpenAlex
- W2059859353
- Cited by
- 309
- References
- 29
- Citations by year
- 2026: 14 · 2025: 25 · 2024: 31 · 2023: 20 · 2022: 23 · 2021: 34 · 2020: 31 · 2019: 29 · 2018: 40 · 2017: 29 · 2016: 25 · 2015: 7
- FWCI
- 22.30
- Type
- journal article
- Language
- en
- Open access
- green
- hdl.handle.net
- Locations
- Chemical Engineering Journal (publishedVersion)
- OPUS - Open Publications of UTS Scholars (University of Technology Sydney) (submittedVersion)
- Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
- Funders
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment
- Topics
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
- Physical Sciences › Environmental Science › Water Science and Technology › Heavy Metal Pollution Remediation
- Keywords
- heavy metal adsorption, cadmium, chromium, copper, lead, zinc, mixed metal solutions, Langmuir isotherm, adsorption kinetics, film diffusion, Thomas model, fixed-bed column adsorption, water treatment
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