Application of Spontaneous Oxidation Processes of Zero-valent Iron and Electrocoagulation for Reactive Black 5 Removal

• Autorzy: Wysocka I. , Filipkowska U. , Jóźwiak T.

Identyfikatory

DOI

10.5604/01.3001.0010.2857

Warianty tytułu

PL

Zastosowanie procesów samorzutnego utleniania żelaza na zerowym stopniu utlenienia (ZVI) oraz elektrokoagulacji (EC) w usuwaniu Reactive Black 5

• Języki publikacji: EN

Abstrakty

EN

Two methods of Reactive Black 5 dye removal were compared in this work, namely electrocoagulation (EC) and one based on spontaneous electrochemical oxidation of zero-valent iron (ZVI). Both methods are based on electrode processes and the sorption process and allow to achieve a similar effectiveness of dye removal. In the case of ZVI, however, a longer contact time or a greater surface area of the electrodes applied is necessary. In turn, the ZVI enables to conduct the processes of dye removal with no requirement for an external source of electric current (lower exploitation inputs). The study demonstrated that the application of both the ZVI method and EC is especially advisable in the case of lower initial concentrations of dye in the solution, i.e. the higher the concentration, the lower the contribution of electrode processes in dye removal from the solution and the greater the contribution of sorption processes.

PL

W ramach niniejszej pracy porównano dwie metody usuwania barwnika Reactive Black 5. Metodę elektrokoagulacji (EC), oraz metodę opartą na samorzutnym elektrochemicznym utlenianiu żelaza na 0 stopniu utlenienia (ZVI). Obie metody wykorzystują procesy elektrodowe oraz procesy sorpcji, umożliwiając uzyskanie podobnej efektywność usuwania barwnika. W przypadku ZVI wymagany jest jednak dłuższy czas kontaktu, lub większa powierzchnia zastosowanych elektrod. ZVI umożliwia jednak przeprowadzenie procesów usuwania barwy, bez konieczności stosowania zewnętrznego źródła prądu (mniejsze nakłady eksploatacyjne). Badania wykazały, że zastosowanie zarówno metody ZVI i EC ma szczególne uzasadnienie w przypadku niższych stężeń początkowych barwnika w roztworze. Im wyższe stężenie, tym udział procesów elektrodowych w usuwaniu barwy roztworu jest mniejszy a przewagę zyskują procesy sorpcji.

Słowa kluczowe

EN

dye removal; zero-valent iron; electrocoagulation; reactive dyes

PL

usuwanie barwników; utlenianie żelaza; elektrokoagulacja; barwniki reaktywne

• Wydawca: Sieć Badawcza Łukasiewicz - Łódzki Instytut Technologiczny
• Czasopismo: Fibres & Textiles in Eastern Europe
• Rocznik: 2017
• Tom: Vol. 25, no. 4 (124)
• Strony: 121--128
• Opis fizyczny: Bibliogr. 26 poz., rys., tab.

Twórcy

autor

Wysocka I.

• University of Warmia and Mazury in Olsztyn, Faculty of Environmental Sciences, Department of Environmental Engineering 10-701 Olsztyn, ul. Warszawska 117

autor

Filipkowska U.

• University of Warmia and Mazury in Olsztyn, Faculty of Environmental Sciences, Department of Environmental Engineering 10-701 Olsztyn, ul. Warszawska 117

autor

Jóźwiak T.

• University of Warmia and Mazury in Olsztyn, Faculty of Environmental Sciences, Department of Environmental Engineering 10-701 Olsztyn, ul. Warszawska 117

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).