Titania-assisted photocatalytic decomposition of triton x-100 detergent in aqueous solution

• Autorzy: Perkowski J. , Bulska A. , Jóźwiak W. K.

Warianty tytułu

PL

Fotokatalityczny proces rozkładu tritonu x-100 w roztworze wodnym z udziałem TiO2

• Języki publikacji: EN

Abstrakty

EN

Photocatalytic oxidation of nonionic surfactants (Tritons) taking place on TiO2 surface is very efficient process. The shortening of polyoxyethylene chains and the splitting of phenyl group occur as a result of hydroxyl radical attack on Tritons molecules. The highest yield of Triton X-100 photooxida-tion found for the titania (TiO2) loading of 1.5-2 g/dm3 strongly depends on the UV lamp applied - the kind of UV radiation and its intensity. The character of photooxidation was the same in the range of surfactant concentration below and above CMC characteristic of Triton X-100. The titania photocatalyst was not subjected to deactivation and could effectively be used many times.

PL

Fotokatalityczne utlenianie trudno rozkładalnych niejonowych detergentów (Tritonów) na powierzchni ditlenku tytanu jest procesem złożonym. Katalitycznemu utlenianiu NSPC towarzyszy adsorpcja związku na powierzchni TiO2 i fotoutlenianie pod wpływem światła UV i tlenu obecnego w roztworze. Rodniki hydroksylowe powodują zarówno skracanie łańcucha polioksyetylenowego, jak i rozrywanie pierścienia aromatycznego w cząsteczce Tritonu. Najwyższą wydajność procesu rozkładu Tritonu X-100 otrzymano dla dawki TiO2 w zakresie 1.5-2 g/dm3. Jej wielkość była wyraźnie zależna od intensywności zastosowanej lampy UV. Wielokrotne użycie tego samego katalizator nie spowodowało spadku efektywności reakcji.

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2005
• Tom: Vol. 31, nr 2
• Strony: 61--76
• Opis fizyczny: Bibliogr. 19 poz., tab., rys.

Twórcy

autor

Perkowski J.

• Institute of Applied Chemistry, Wróblewskiego 15, 93-590 Łódź, Poland, tel [phone], fax [phone]

autor

Bulska A.

• Institute of General and Ecological Chemistry, Technical University of Łódź, 90-924, Łódź, Żeromskiego 116, Poland

autor

Jóźwiak W. K.

• Institute of General and Ecological Chemistry, Technical University of Łódź, 90-924, Łódź, Żeromskiego 116, Poland

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