Sorption of Cr(VI) onto hdtma modified zeolitic tuffs

• Autorzy: Sobolewska Paulina , Chojnacka Maria , Kramski Dawid , Warchoł Jolanta

Identyfikatory

DOI

10.2428/ecea.2020.27(1-2)7

Warianty tytułu

PL

Sorpcja Cr(VI) na tufach zeolitowych modyfikowanych HDTMA

• Języki publikacji: EN

Abstrakty

EN

The removal of Cr(VI) from aqueous solutions was investigated using clinoptilolite and phillipsite-chabazite rich tuffs. These minerals were modified using hexadecyltrimethyl – ammonium bromide (HDTMA-Br) and used for Cr(VI) ions removal. The physicochemical characteristics of zeolitic minerals were revealed by XRD, XRF, BET and FT-IR techniques. The uptake capacities of modified zeolites were compared in batch sorption experiments. To predict the sorption isotherms and to determine the characteristic parameters for process design, three isotherm models the Freundlich, the Langmuir, and the Bilangmuir, were applied to experimental data. The data obtained reveal homogeneous Cr(VI) sorption on one kind of active sites on PC-HDTMA surface and heterogeneous sorption on two kinds of active sites on CL-HDTMA surface.

Słowa kluczowe

EN

hexavalent chromium; HDTMA-Br modified zeolites; clinoptilolite; phillipsite; sorption equilibrium

PL

chrom sześciowartościowy; zeolity modyfikowane HDTMA-Br; klinoptylolit; filipsyt; równowaga sorpcji

• Wydawca: Towarzystwo Chemii i Inżynierii Ekologicznej
• Czasopismo: Ecological Chemistry and Engineering. A
• Rocznik: 2020
• Tom: Vol. 27, nr 1-2
• Strony: 1--9
• Opis fizyczny: Bibliogr. 13 poz., rys., tab.

Twórcy

autor

Sobolewska Paulina

• Department of Water Purification and Protection, Rzeszow University of Technology, Powstańców Warszawy 12, 35-959 Rzeszów, Poland.

autor

Chojnacka Maria

• Polytechnic Faculty, The President Stanisław Wojciechowski State University of Applied Sciences in Kalisz, Poznańska 201–205, 62-800 Kalisz, Poland.

autor

Kramski Dawid

• Department of Advance Materials Technologies, Wroclaw University of Science and Technology, Wybrzeże Wyspianskiego 27, 50-370 Wrocław, Poland.

autor

Warchoł Jolanta

• Department of Advance Materials Technologies, Wroclaw University of Science and Technology, Wybrzeże Wyspianskiego 27, 50-370 Wrocław, Poland.

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).