Bolivian natural zeolite as a low-cost adsorbent for the adsorption of cadmium: Isotherms and kinetics

Velarde, Lisbania; Nikjoo, Dariush; Escalera, Edwin; Akhtar, Farid

doi:10.1016/j.heliyon.2024.e24006

Cited by 10 publications

(2 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Langmuir adsorption isotherm implies that adsorption occurs on a homogeneous surface via monolayer coverage with no interaction between adsorbed molecules. The Freundlich adsorption isotherm suggests that adsorption occurs on a heterogeneous surface with sites of varying affinities, leading to multilayer adsorption [36]. The Langmuir adsorption isotherm implies that adsorption occurs on a homogeneous surface via monolayer coverage with no interaction between adsorbed molecules.…”

Section: Influence Of Phmentioning

confidence: 99%

See 1 more Smart Citation

Functionalization of Na2Ca2Si3O9/Ca8Si5O18 Nanostructures with Chitosan and Terephthalaldehyde Crosslinked Chitosan for Effective Elimination of Pb(II) Ions from Aqueous Media

Al-Farraj,

Alotaibi,

Abdelrahman

et al. 2024

Inorganics

View full text Add to dashboard Cite

Lead poses significant health risks to humans, including neurological and developmental impairments, particularly in children. Additionally, lead pollution in the environment can contaminate soil, water, and air, endangering wildlife and ecosystems. Therefore, this study reports the straightforward fabrication of Na2Ca2Si3O9/Ca8Si5O18 nanostructures (NaCaSilicate) utilizing a sol-gel technique. Additionally, the produced nanostructures underwent further modification with chitosan (CS@NaCaSilicate) and chitosan crosslinked with terephthalaldehyde (CCS@NaCaSilicate), resulting in new nanocomposite materials. These samples were developed to efficiently extract Pb(II) ions from aqueous media through complexation and ion exchange mechanisms. Furthermore, the maximum adsorption capacity for Pb(II) ions by the NaCaSilicate, CS@NaCaSilicate, and CCS@NaCaSilicate samples is 185.53, 245.70, and 359.71 mg/g, respectively. The uptake of Pb(II) ions was characterized as spontaneous, exothermic, and chemical, with the best description provided by the Langmuir equilibrium isotherm and the pseudo-second-order kinetic model. Furthermore, a 9 M hydrochloric acid solution effectively eliminated Pb(II) ions from the synthesized samples, attaining a desorption efficacy surpassing 99%. Additionally, the fabricated samples exhibited efficient reusability across five successive cycles of adsorption and desorption for capturing Pb(II) ions.

show abstract

Section: Influence Of Phmentioning

confidence: 99%

Section: Influence Of Phmentioning

confidence: 99%

Functionalization of Na2Ca2Si3O9/Ca8Si5O18 Nanostructures with Chitosan and Terephthalaldehyde Crosslinked Chitosan for Effective Elimination of Pb(II) Ions from Aqueous Media

Al-Farraj,

Alotaibi,

Abdelrahman

et al. 2024

Inorganics

View full text Add to dashboard Cite

show abstract

Fundamental properties and sustainable applications of the natural zeolite clinoptilolite

Grifasi,

Ziantoni,

Fino

et al. 2024

Environ Sci Pollut Res

View full text Add to dashboard Cite

This review explores a set of sustainable applications of clinoptilolite, a natural zeolite abundant around the world in different localities. Thanks to its physico-chemical properties this material is extremely versatile for several applications, ranging from environmental catalysis and CO2 removal to industrial and agricultural wastewater purification, aquaculture, animal feeding, and food industry but also medical applications and energy storage systems. Due to the presence of cations in its framework, it is possible to tune the material’s features making it suitable for adsorbing specific compounds. Thus, this review aims to provide insight into developing new technologies based on the use of this material that is sustainable, not harmful for humans and animals, naturally abundant, and above all cost-effective. Furthermore, it is intended to promote the use of natural materials in various areas with a view to sustainability and to reduce as far as possible the use of chemicals or other materials whose synthesis process can have a polluting effect on the environment. Graphical abstract

show abstract

Selective removal of zinc from single and industrial aqueous solutions using ecologically sustainable ceramic adsorptive aggregates

Boussai,

Maherzi,

Mosbahi

et al. 2024

Euro-Mediterr J Environ Integr

View full text Add to dashboard Cite

Bolivian natural zeolite as a low-cost adsorbent for the adsorption of cadmium: Isotherms and kinetics

Cited by 10 publications

References 77 publications

Functionalization of Na2Ca2Si3O9/Ca8Si5O18 Nanostructures with Chitosan and Terephthalaldehyde Crosslinked Chitosan for Effective Elimination of Pb(II) Ions from Aqueous Media

Functionalization of Na2Ca2Si3O9/Ca8Si5O18 Nanostructures with Chitosan and Terephthalaldehyde Crosslinked Chitosan for Effective Elimination of Pb(II) Ions from Aqueous Media

Fundamental properties and sustainable applications of the natural zeolite clinoptilolite

Selective removal of zinc from single and industrial aqueous solutions using ecologically sustainable ceramic adsorptive aggregates

Contact Info

Product

Resources

About