ROMANIAN (MĂCICAŞ) ZEOLITIC VOLCANIC TUFF FOR MALACHITE GREEN REMOVAL

Authors

  • Raluca PLEŞA CHICINAŞ Ana Aslan Technical College, Cluj-Napoca, Romania. Corresponding author: sanda.maicaneanu@iup.edu.
  • Horea Gabriel BEDELEAN Department of Geology, Babes-Bolyai University, Cluj-Napoca, Romania. Email: horia.bedelean@ubbcluj.ro. https://orcid.org/0000-0002-8508-5247
  • Andrada S. MĂICĂNEANU Madia Department of Chemistry, Indiana University of Pennsylvania, Indiana, USA; Department of Chemical Engineering, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, Cluj-Napoca, Romania. Email: sanda.maicaneanu@iup.edu. https://orcid.org/0000-0002-6905-3894

Keywords:

natural zeolite, malachite green, adsorption, efficiency, equilibrium, kinetic, thermodynamic

Abstract

Zeolitic volcanic tuff was tested as a potential adsorbent for malachite green (MG) dye removal from aqueous solutions. The influences of contact time, temperature, dye initial concentration, solid:liquid ratio, and adsorbent grain size over the adsorption capacity and efficiency were considered. Removal efficiencies up to 99% and a monolayer capacity (Langmuir) of 4.05 mg MG/g were calculated. The equilibrium and kinetic study showed that the experimental data were best fitted on the Temkin model and that the intra-particle diffusion could be the rate determining step. Thermodynamic analysis showed that MG adsorption onto ZVT is an endothermic, non-spontaneous process.

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Published

2016-12-30

How to Cite

PLEŞA CHICINAŞ, R. ., BEDELEAN, H. G., & MĂICĂNEANU, A. S. . (2016). ROMANIAN (MĂCICAŞ) ZEOLITIC VOLCANIC TUFF FOR MALACHITE GREEN REMOVAL. Studia Universitatis Babeș-Bolyai Chemia, 61(4), 243–254. Retrieved from https://studia.reviste.ubbcluj.ro/index.php/chemia/article/view/8394

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