Removal of 2-chlorophenol from water by adsorption combined with TiO2 photocatalysis

Research output: Contribution to journalArticle

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Abstract

The results of a laboratory-scale study of an environmentally friendly water treatment method is presented, where the organic model pollutant 2-chlorophenol (2-CP) was first adsorbed and then removed by a direct photolytic or heterogeneous photocatalytic process. The adsorbent was an organically treated (with hexadecylpyridinium chloride) clay mineral (montmorillonite), and the photocatalyst was Degussa P25. The total organic carbon and total inorganic chloride contents were measured to monitor the mineralization process, while the degradation of 2-CP and the formation of intermediates were followed by HPLC. No negative effect of the suspended adsorbent was observed either in the direct photolytic process or in the heterogeneous photocatalytic degradation process. Although direct photolysis allows the highest degree of 2-CP removal, in this case the degradation of the organic pollutant is accompanied by destruction of the adsorbent. The removal of 2-CP through the combination of adsorption and heterogeneous photocatalysis was achieved in a reasonable acceptable time interval, and can therefore be suggested as an efficient, cost-effective and environment-friendly water treatment facility.

Original languageEnglish
Pages (from-to)247-256
Number of pages10
JournalApplied Catalysis B: Environmental
Volume39
Issue number3
DOIs
Publication statusPublished - Dec 6 2002

Fingerprint

Photocatalysis
chlorophenol
Adsorbents
Clay minerals
Chloride minerals
adsorption
Water treatment
Adsorption
Degradation
Water
degradation
water treatment
Organic pollutants
chloride
Photolysis
Cetylpyridinium
Photocatalysts
Organic carbon
Bentonite
water

Keywords

  • Adsorption
  • Advanced oxidation processes
  • Chlorophenol
  • Direct photolysis
  • Organo-clays
  • Photocatalysis
  • Titanium dioxide
  • Water purification

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology
  • Environmental Chemistry

Cite this

Removal of 2-chlorophenol from water by adsorption combined with TiO2 photocatalysis. / Ilisz, I.; Dombi, A.; Mogyorósi, K.; Farkas, András; Dékány, I.

In: Applied Catalysis B: Environmental, Vol. 39, No. 3, 06.12.2002, p. 247-256.

Research output: Contribution to journalArticle

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