Catalytic ozonation of aqueous model solutions of reactive dye blue-1

• Autorzy: Parisheva Z. , Nusheva L.

Warianty tytułu

PL

Katalityczne ozonowanie modelowych roztworów reaktywnego barwnika błękit-1

• Języki publikacji: EN

Abstrakty

EN

Catalytic ozonation of aqueous solutions of reactive dye simulating textile waste effluents was studied. The efficiency of ozonation was enhanced by nickel oxide catalyst. It was also established that the effect of the catalyst on the removal of the dye Blue-1 depends on pH of the medium and is noticeable at pH 7, whereas at higher pH values it is negligible. The effectiveness of cata-lytic ozonation and ozonation was estimated based on the degree of conversion. The effect of temperature and the amount of the catalyst on the Blue-1 removal was investigated. At a room temperature and a minimum amount of the catalyst the degree of Blue-1 conversion due to catalytic ozonation was 81% compared to 53% due to ozonation alone under the same conditions. The COD reduction at pH 7 due to catalytic ozonation and the ozonation itself was 50% and 22%, respectively, which evidences an improvement in the dye removal.

PL

Badano katalityczne ozonowanie wodnych roztworów reaktywnego barwni-ka symulujących ścieki z zakładów przemysłu włókienniczego. Efektywność ozonowania poprawia tlenek niklu użyty jako katalizator. Ustalono, że wpływ katalizatora na usuwanie barwnika zależy od pH środowiska i jest duży, gdy pH=7, a niewielki dla wyższych jego wartości. Efektywność katalitycznego ozonowania i samego ozonowania określono na podstawie stopnia konwersji. Badano wpływ temperatury i ilości katalizatora na usuwanie barwnika. W tem-peraturze pokojowej i przy minimalnej ilości katalizatora stopień konwersji barwnika w wyniku katalitycznego ozonowania osiąga 81% w porównaniu z 53% w przypadku samego ozonowania. Redukcja ChZT przy pH=7 wskutek katalitycznego ozonowania wynosiła 50%, a wskutek jedynie ozonowania - 22%, co świadczy o lepszym usuwaniu barwnika

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2003
• Tom: Vol. 29, nr 2
• Strony: 5--16
• Opis fizyczny: Bibliogr. 17 poz., rys.

Twórcy

autor

Parisheva Z.

• Department of Chemistry, Technical University of Plovdiv, 8 Dustabanov St., 4000 Plovdiv, Bulgaria.

autor

Nusheva L.

• Department of Chemistry, Technical University of Plovdiv, 8 Dustabanov St., 4000 Plovdiv, Bulgaria.

Bibliografia

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