Fractal approach of activated carbons from solid waste materials

K. László, A. Bóta, L. Nagy, G. Subklew, M. J. Schwuger

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Carbonaceous composite materials were produced from various pyrolyzed organic waste materials by steam activation. Fractal dimensions derived from SAXS and adsorption measurements were used to explain the changes in the matrix and the surface microstructure, due to the activation. The comparison of the fractal dimensions from SAXS and nitrogen adsorption data can be successfully applied to understand the development of the porous structure. In these materials, of heterogeneous matrix, no correlation was found between the B.E.T. specific surface area and the fractal dimensions derived from various methods. The adsorption of different substrates is disturbed by the chemical heterogeneity of the surface. In these cases, the applicability of aqueous solutions in the description of the surface geometry might be questioned.

Original languageEnglish
Pages (from-to)29-37
Number of pages9
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume138
Issue number1
DOIs
Publication statusPublished - Jun 30 1998

Fingerprint

solid wastes
Solid wastes
Fractal dimension
activated carbon
Fractals
Activated carbon
fractals
Adsorption
adsorption
Chemical activation
activation
surface geometry
Steam
matrices
Specific surface area
steam
Nitrogen
aqueous solutions
nitrogen
microstructure

Keywords

  • Activated carbon
  • Adsorption
  • Fractal
  • Polyethyleneterephthalate
  • Recycling
  • SAXS

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Fractal approach of activated carbons from solid waste materials. / László, K.; Bóta, A.; Nagy, L.; Subklew, G.; Schwuger, M. J.

In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 138, No. 1, 30.06.1998, p. 29-37.

Research output: Contribution to journalArticle

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