Removal of 2,4,6-trichlorophenol from aqueous solutions using agricultural waste as low-cost adsorbents

• Autorzy: Kuśmierek K. , Świątkowski A. , Dąbek L.

Identyfikatory

DOI

10.5277/epe170412

• Języki publikacji: EN

Abstrakty

EN

Agricultural waste products including sunflower seed hulls, pumpkin seed shells, walnut shells and peanut shells were used as low-cost adsorbents for the removal of 2,4,6-trichlorophenol (TCP) from aqueous solutions. The effects of adsorbent dosage, pH and ionic strength on the adsorption of TCP were investigated. The results showed that the adsorption of TCP was pH dependent and increased upon increasing the ionic strength of the solution. The adsorption kinetics was found to follow a pseudo-second order kinetics. The equilibrium adsorption data were fitted to the Langmuir, Freundlich and Sips isotherms and the best results were achieved with the Freundlich model. The desorption of TCP using deionized water, water/methanol mixture or 5% sodium hydroxide was also studied. The results suggest that the tested materials may be used as an effective adsorbents without any treatment or any other modification for removal of TCP from the aqueous medium.

Słowa kluczowe

EN

activated carbon; heavy metals; Langmuir isotherm; Freundlich models

PL

węgiel aktywny; metale ciężkie; odpady rolnicze; izoterma Langmuira

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2017
• Tom: Vol. 43, nr 4
• Strony: 149--163
• Opis fizyczny: Bibliogr. 27 poz., tab., rys.

Twórcy

autor

Kuśmierek K.

• Institute of Chemistry, Military University of Technology, ul. Kaliskiego 2, 00-908 Warsaw, Poland

autor

Świątkowski A.

• Institute of Chemistry, Military University of Technology, ul. Kaliskiego 2, 00-908 Warsaw, Poland

autor

Dąbek L.

• Faculty of Environmental, Geomatic and Energy Engineering, Kielce University of Technology, ul. Studencka 2, 25-314 Kielce, Poland.

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).