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[30083] Artykuł:

Influence of chlorine atom number in chlorophenol molecules on their adsorption on actviated carbon

Czasopismo: Fresenius Environmental Bulletin   Tom: 23, Zeszyt: 3a, Strony: 947-951
ISSN:  1018-4619
Wydawca:  PARLAR SCIENTIFIC PUBLICATIONS (P S P), ANGERSTR. 12, 85354 FREISING, GERMANY
Opublikowano: 2014
 
  Autorzy / Redaktorzy / Twórcy
Imię i nazwisko Wydział Katedra Procent
udziału
Liczba
punktów
Lidia Dąbek orcid logoWiŚGiEKatedra Technologii Wody i Ścieków2515.00  
Krzysztof Kuśmierek25.00  
Andrzej Świątkowski25.00  
Piotr Syga25.00  

Grupa MNiSW:  Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A)
Punkty MNiSW: 15
Klasyfikacja Web of Science: Article


Web of Science Logo Web of Science    
Keywords:

4-chlorophenol  2  4-dichlorophenol  2  4  6-trichlorophenol  activated carbon  adsorption 



Abstract:

Kinetics and equilibria of 4-chlorophenol, 2,4-dichlorophenol and 2,4,6-trichlorophenol adsorption from aqueous solutions onto powdered activated carbon was investigated. The experimental systems were analyzed in terms of Cl atom number in chlorophenol molecules. The kinetics was fitted with the pseudo-second-order model better than pseudo-first-order. The adsorption equilibria of all three adsorbates were described by Freundlich equation better (higher R-2 values) than by Langmuir equation. The Freundlich equation constant K-F was decreasing when Cl atom number in chlorophenol molecules increased. Comparison of our data with results of other papers is difficult because of different adsorbate concentration units (mg L-1 or mmol L-1), or too low equilibrium concentrations (C-e) of adsorbates used. Therefore, for this purpose, we recommend using the relative concentration i.e. C-e/Cs (Cs - solubility).