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Synthesis of activated carbons from plastic waste and elimination of Rhodamine B in Batch mode

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Author Affiliations

  • 1Laboratoire de Recherche en Chimie Appliquee (LARCA), Ecole Normale Superieure, Universite Marien NGOUABI
  • 2Laboratoire de Recherche en Chimie Appliquee (LARCA), Ecole Normale Superieure, Universite Marien NGOUABI
  • 3Laboratoire de Recherche en Chimie Appliquee (LARCA), Ecole Normale Superieure, Universite Marien NGOUABI

Res. J. Recent Sci., Volume 10, Issue (3), Pages 1-9, July,2 (2021)

Abstract

In this study, PET waste is used to prepare PETA (a) and PETA (b) activated carbon in Carbolite Gero CWF-1100, 30-1100°C furnace. Zinc chloride was used as impregnating agent. The surface functions were demonstrated using FTIR infrared analyzes. The iodine value of activated carbon obtained by indirect process is higher (1018.32mg/g) compared to that obtained by direct process (988.56mg/g). The specific surfaces are respectively 828.326 and 1090.735m2/g for PETA (a) and PETA (b). The influence of mass has shown that, for 0.01g, the PETA (b) eliminates yield is 62.58% compared to PETA (a) (45.76%). pH study shows an increase of RB adsorbed when the pH is between 2 and 4. The ionic strength revealed that RB adsorbed, in the absence of NaCl, are lower than those obtained in the presence of NaCl. Theoretical model of Langmuir show best correlation for two materials, while Freundlich model, described the mechanism of PETA (a). These models suggest that the adsorption of this dye is physico-chemical type. Intraparticle kinetic and Langmuir-Hinshelwood (L-H) models explain the adsorption kinetics on our two materials.

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