Affinity of Clinoptilolite‐based Zeolites towards Removal of Cd from Aqueous Solutions
Open accessAbstract
Cd removal from aqueous solutions using as‐received and pretreated forms of two different clinoptilolite samples (denoted GC and BC) was investigated and dissimilar sorption affinities were revealed. Equilibrium behavior of systems were modeled using six different adsorption isotherms. The maximum sorption capacities, as obtained from the solubility‐normalized Dubinin‐Astakhov model for as‐received samples, were determined as 0.18 meq/g and 0.12 meq/g for GC and BC, whereas 0.72 meq/g and 0.41 meq Cd/g was determined for their pretreated forms, respectively. Examination of the release of exchangeable cations into the solution at equilibrium and the change of pH were discussed in terms of varying prevalence of ion exchange, dissolution of the sorbent and adsorption.
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Acid treatment was found to be more effective than other methods for the treatment.
“The acid treatment was found to be more effective than other methods for the treatment (Bektas ¸ and Kara, 2004;Gedik and Imamoglu, 2008).”
From Adsorption of heavy metals on natural zeolites: A review (2023) · cites this paper as Gedik and Imamoglu, 2008
There are two main categories of reagents to wash and recover natural zeolites by removing heavy metals: acids and alkalis.
“there are two main categories of reagents to wash and recover natural zeolites by removing heavy metals i.e., acids (HCl, H 2 SO 4 , HNO 3 , HCOOH, CH 3 COOH), and alkalis (NaCl, KCl, NH 4 Cl, NaOH, NaHCO 3 , Na 2 CO 3 , KOH, K 2 CO 3 Ca (NO 3 ) 2 ).”
From Adsorption of heavy metals on natural zeolites: A review (2023) · cites this paper as Gedik and Imamoglu, 2008
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Natural zeolites as effective adsorbents in water and wastewater treatment
Wang, S., & Peng, Y. (2010) · Chemical Engineering Journal · doi:10.1016/j.cej.2009.10.029 · Cited by 2,441 · see citing works
Adsorption of heavy metals on natural zeolites: A review
Velarde, L., Nabavi, M. S., Escalera, E., Antti, M.-L., & Akhtar, F. (2023) · Chemosphere · doi:10.1016/j.chemosphere.2023.138508 · Cited by 491 · see citing works
“2) (Anari-Anaraki and Nezamzadeh-Ejhieh, 2015; Asgari et al., 2013; Gedik and Imamoglu, 2008; Ren et al., 2016).”
Influential
- Authors
- Gedik, K., & Imamoglu, I.
- Venue
- Separation Science and Technology
- Publisher
- Informa UK Limited
- Published
- 2008-03
- Volume
- 43
- Issue
- 5
- Pages
- 1191-1207
- ISSN
- 0149-6395 (ISSN-L)
- 1520-5754
- OpenAlex
- W2032942567
- Cited by
- 25
- References
- 0
- Citations by year
- 2024: 1 · 2023: 4 · 2022: 1 · 2021: 2 · 2020: 3 · 2019: 3 · 2017: 1 · 2016: 2 · 2014: 3 · 2013: 1 · 2012: 1
- FWCI
- 1.10
- Type
- journal article
- Language
- en
- Open access
- green
- hdl.handle.net
- Licence
- cc-by-nc-nd
- Locations
- Separation Science and Technology (publishedVersion)
- OpenMETU (Middle East Technical University) (submittedVersion, cc-by-nc-nd)
- Topics
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Physical Sciences › Environmental Science › Waste Management and Disposal › Chemical Synthesis and Characterization
- Physical Sciences › Chemistry › Inorganic Chemistry › Zeolite Catalysis and Synthesis
- Keywords
- cadmium removal, clinoptilolite, zeolite adsorption, heavy metal adsorption, adsorption isotherms, Dubinin-Astakhov model, sorption capacity, ion exchange, pH effect, aqueous solutions
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