Adsorption of Tannic Acid on Fluorite Surface: Experimental and Modelling Studies

EasyChair Preprint 5117

Abstract

Fluorite is an important industry mineral that is can be coexisted with gangue minerals including calcite. However, fluorite and calcite have similar surface proprieties that can avoid their separation. Flotation by tannic acid adsorption onto calcite and fluorite is the method commonly applied to separate between these two calcium minerals. In this work, the mechanism of tannic acid adsorption onto fluorite is determined by experimental adsorption isotherm modelling using Langmuir, Freundlich and Sips models. Modelling results indicate that the adsorption process is well described by Sips model. On the other hand, the effect of particle size on studied adsorption was evaluated. The obtained results show that this parameter has a significant effect on tannic acid adsorption.

Keyphrases: Adsorption, Isotherm, fluorite, modelling, particle size, tannic acid

@booklet{EasyChair:5117,
  author    = {Mariam Tangarfa and Naoual Semlali Aouragh Hassani},
  title     = {Adsorption of Tannic Acid on Fluorite Surface: Experimental and Modelling Studies},
  howpublished = {EasyChair Preprint 5117},
  year      = {EasyChair, 2021}}