Cited by 115Adsorption and biosorption for pollutant removalZeolite Catalysis and SynthesisEnvironmental remediation with nanomaterials

Regeneration of natural zeolite polluted by lead and zinc in wastewater treatment systems

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Katsou, Evina, Malamis, Simos, Tzanoudaki, Myrto, Haralambous, Katherine J., Loizidou, Maria·2011·Journal of Hazardous Materials

Abstract

The aim of this work was to investigate the potential regeneration of natural zeolite which had been contaminated with lead and zinc contained in aqueous solutions, treated secondary effluent and primary treated wastewater. Several desorbing solutions were examined for the removal of Pb(II) and Zn(II) from zeolite and the highest desorption efficiency was obtained for 3M KCl and 1M KCl, respectively. The desorption process depended on the type and concentration of the desorbing solution, the metal being desorbed, the mineral selectivity towards the metal and the composition of the liquid medium where the adsorption process had taken place. Successive regeneration cycles resulted in the reduction of desorption efficiency by more than 50% after 9 and 4 cycles for lead and zinc, respectively. Kinetics examination showed that desorption was slower than adsorption, while metal ions which had been easily adsorbed were difficult to be desorbed. Adsorption was characterized by a three-stage diffusion process, while desorption followed a two-stage diffusion process.

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Crossref · 10.1016/j.jhazmat.2010.12.061

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  • For Pb desorption from natural clinoptilolite, 3 M KCl has many cycles while the first desorption capacity was greater than 98.5%.

    “They found that 3 M KCl has many cycles while the first desorption capacity was greater than 98.5%.”

    From Adsorption of heavy metals on natural zeolites: A review (2023) · cites this paper as Katsou et al., 2011

  • The adsorption process is faster than the desorption process, and metal ions that were adsorbed readily were more difficult to desorb.

    “In addition, the adsorption process is faster than the desorption process, and the metal ions that were adsorbed readily were more difficult to desorb (Katsou et al., 2011).”

    From Adsorption of heavy metals on natural zeolites: A review (2023) · cites this paper as Katsou et al., 2011

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Authors
Katsou, E., Malamis, S., Tzanoudaki, M., Haralambous, K. J., & Loizidou, M.
Affiliations
National Technical University of Athens (GR)
Corresponding author
Malamis, Simos
Venue
Journal of Hazardous Materials
Publisher
Elsevier BV
Published
2011-05
Volume
189
Issue
3
Pages
773-786
ISSN
0304-3894 (ISSN-L)
OpenAlex
W1986230832
Cited by
115
References
54
Citations by year
2026: 7 · 2025: 8 · 2024: 10 · 2023: 12 · 2022: 8 · 2021: 12 · 2020: 8 · 2019: 6 · 2018: 7 · 2017: 5 · 2016: 4 · 2015: 6 · 2014: 6 · 2013: 8 · 2012: 5
FWCI
5.19
Type
journal article
Language
en
Open access
Locations
  • Journal of Hazardous Materials (publishedVersion)
  • PubMed (publishedVersion)
  • DSpace - NTUA (National Technical University of Athens) (submittedVersion, other-oa)
Funders
  • European Social Fund
  • Ministry of Education, Lifelong Learning and Religious Affairs
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Chemistry › Inorganic Chemistry › Zeolite Catalysis and Synthesis
  • Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
Keywords
natural zeolite, zeolite regeneration, lead adsorption, zinc adsorption, heavy metal removal, wastewater treatment, secondary effluent, desorption, adsorption kinetics, diffusion models, metal ion selectivity, adsorbent reusability
MeSH terms
Adsorption, Diffusion, Kinetics, Lead, Metals, Potassium Chloride, Time Factors, Waste Disposal, Fluid, Water Pollutants, Chemical, Zinc, Reproducibility of Results, Models, Statistical, Zeolites, Water Purification

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