Authors:
Mihaela-Ligia Ungureşan Department of Chemistry, Faculty of Materials Science and Engineering, Technical University of Cluj-Napoca, 103-105 Muncii bd, 400641, Cluj-Napoca, Romania

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Andrada Măicăneanu Department of Chemical Technology, Faculty of Chemistry and Chemical Engineering, “Babeş-Bolyai” University, 11 Arany Janos str, 400028, Cluj-Napoca, Romania

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Francisc-Vasile Dulf Department of Chemistry, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine, 3-5 Calea Mănăştur, 400372, Cluj-Napoca, Romania

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Eva-Henrietta Dulf Department of Automation, Faculty of Automation and Computer Science, Technical University of Cluj-Napoca, 28 Memorandumului str, 400114, Cluj-Napoca, Romania

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Delia Maria Gligor Department of Environmental Physics, Chemistry and Technology, Faculty of Environmental Science, “Babeş-Bolyai University, 30 Fântînele str, 400294, Cluj-Napoca, Romania

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Abstract

Natural zeolites (zeolitic volcanic tuffs) cropped out from three regions of Transilvania, Vultureni (V), Pâglişa (P) and Măcicaş (M), were evaluated in the process of iron (V, P, M) and copper (M) removal from wastewaters. Iron and copper removal process was studied using a fixed bed column, when equilibrium and kinetic data were acquired. Four isotherms, Langmuir, Freundlich, Langmuir–Freundlich and Redlich–Peterson, were used to fit the experimental data obtained for each natural zeolite sample. Parameters of the adsorption isotherms were estimated from the experimental equilibrium data using MATLAB. Using these data the best fit with one of the chosen isotherm can be found. Isotherm constants were determined by linear regression analysis of the experimental data. We concluded that the mathematical model based on Freundlich isotherm is the most appropriate to describe the iron and copper exchange on our natural zeolite samples.

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    Bakalár, T, Búgel, M, Pavolová, H. 2008. Equilibrium modeling of Cu and Ni removal from aqueous solutions: influence of salinity, Proceedings of the World Academy of Science. Eng Technol. 34:252255.

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  • 17.

    Abrudean M , Dulf EH, Ungureşan ML. Modelling and numerical simulation examples of distributed parameters processes. IFAC workshop on convergence of Information Technologies and control methods with power plants and power systems, ICPS'07, Cluj-Napoca, 9–11 July 2007: 129-134.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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