Post-coagulation sludge as an adsorbent of dyes from aqueous solutions

• Autorzy: Pieczykolan Barbara , Płonka Izabela

Identyfikatory

DOI

10.1515/eces-2019-0038

Warianty tytułu

PL

Osad pokoagulacyjny jako adsorbent barwników z roztworów wodnych

• Języki publikacji: EN

Abstrakty

EN

The main source of usable water supply in Poland is surface water. The most frequently used methods of surface water treatment are coagulation and filtration processes. During these processes post-coagulation sludge is generated, which is the main waste produced in water treatment plants. This sludge is characterized by an amorphous structure with a strongly developed specific surface, similar to sewage sludge. Dried and crushed post-coagulation sludge was used in the studies as an adsorbent of two acid dyes: Acid Red 18 (AR 18) and Acid Green 16 (AG 16). The most favourable pH of process and contact time as well as sorption isotherm were established. For both dyes the most favourable pH value was equal 2. The tests showed that in the case of AR 18 (180 min) a longer contact time was necessary to reach the equilibrium than for AG 16 (120 min). Moreover, based on the different isotherm two-parameter models, the sorption capacity, type of sorption and energy of sorption were calculated based on linear and non-linear regression. The tests showed that in the case of dye AG 16 monolayer sorption occurred - the analysis showed better fitting the results to Langmuir model. Moreover, for both dyes, physical adsorption took place - it was indicated by the values of parameter 1/n (computed from the Freundlich model).

Słowa kluczowe

EN

water treatment; dye adsorption; waste sorbent; sorption isotherm

PL

uzdatnianie wody; adsorpcja barwnika; odpady sorbentów; izoterma sorpcji

• Wydawca: Towarzystwo Chemii i Inżynierii Ekologicznej
• Czasopismo: Ecological Chemistry and Engineering. S
• Rocznik: 2019
• Tom: Vol. 26, nr 3
• Strony: 509--520
• Opis fizyczny: Bibliogr. 31 poz., rys., wykr., tab.

Twórcy

autor

Pieczykolan Barbara

• Faculty of Energy and Environmental Engineering, Silesian University of Technology, ul. S. Konarskiego 18, 44-100 Gliwice, Poland, phone [phone], fax [phone]

autor

Płonka Izabela

• Faculty of Energy and Environmental Engineering, Silesian University of Technology, ul. S. Konarskiego 18, 44-100 Gliwice, Poland, phone [phone], fax [phone]

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).