Removal of Cadmium from Aqueous Solution Using Sonochemically Modified Clinoptilolite: Optimization and Modelling
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F20%3A43918310" target="_blank" >RIV/62156489:43410/20:43918310 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.eti.2020.101166" target="_blank" >https://doi.org/10.1016/j.eti.2020.101166</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.eti.2020.101166" target="_blank" >10.1016/j.eti.2020.101166</a>
Alternative languages
Result language
angličtina
Original language name
Removal of Cadmium from Aqueous Solution Using Sonochemically Modified Clinoptilolite: Optimization and Modelling
Original language description
Clinoptilolite (CL) has been sonochemically modified by using NaCl solution and applying a 35 kHz ultrasound in 30 min and at 60 C. The modified clinoptlolite (SNa-CL) has been characterized by X-ray diffraction (XRD), laser scattering, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and nitrogen adsorption/desorption isotherms. Results showed that the sonochemical modification process could reduce particle size, enhance effective cation exchange capacity from 0.10 to 1.58 meq/g, and enlarge the surface area of CL from 31.14 to 37.25 m2/g The cadmium removal efficiency of the modified CL was optimized using response surface methodology (RSM) with central composite design (CCD). Under the optimal condition with pH of 6.3, the contact time of 309 min, Cd initial concentration of 79.41 mg/L, and SNa-CL dosage of 7.02 g/L, the removal efficiency reached 99%. The adsorption kinetics was obeyed the second-order model and controlled by multiple steps. The adsorption isotherms were well fitted to the Langmuir model and the maximum adsorption capacity at different temperatures was more than 20 mg/L. The thermodynamic study showed that the adsorption of Cd onto SNa-CL was a spontaneous, endothermic, and physical-chemical process. The results in this work suggested that the sonochemical modification is a potential method for fabricating effective and low-cost adsorbents from natural resources.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10406 - Analytical chemistry
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Environmental Technology and Innovation
ISSN
2352-1864
e-ISSN
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Volume of the periodical
20
Issue of the periodical within the volume
November
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
13
Pages from-to
101166
UT code for WoS article
000597137500016
EID of the result in the Scopus database
2-s2.0-85091254119