Meltem Sarıoğlu CEBECİ, Sefa Furkan SELÇUK

Atıksudan Fotokatalitik Yöntemle Boya Giderimi Ve Mineralizasyonu

Gelecek yılların en önemli çevresel sorunlarından biri su kirliliği ve su kıtlığıdır. Bu nedenle boyahaneleriyle yüksek miktarda su tüketen tekstil endüstrisi gibi üretim tesislerinin atıksularının ileri düzeyde arıtımı oldukça önemlidir. Bu atık suların uygun şekilde arıtılmaması insan ve canlı çevre üzerinde toksik ve kanserojenik etki yapmaktadır. Boyarmaddelerim karmaşık kompleks yapıları kirlettikleri suyun arıtımını oldukça zorlaştırmaktadır. Bu nedenle klasik arıtım yöntemleri yetersiz kalmaktadır. Son zamanlarda, bir ileri arıtım tekniği olan fotokatalitik yöntem boya giderimi konusunda ilgi çekmeye başlamıştır. Bu çalışmada katyonik boyanın (metilen mavisi) fotokatalitik yöntemle sulu çözeltiden giderimi ve mineralizasyonu çalışılmıştır. Deneyler için kullanılan reaktör laboratuvarda özel olarak tasarlamıştır. Ultraviyole ışık kaynağı olarak UV-C lambalar kullanılmıştır. Katalizör olarak en yaygın kullanılan iki katalizör olan TiO2 ve ZnO seçilmiştir. Mineralizasyon çalışmasının yanı sıra katalizörlerin optimum pH’ları, karışım halinde kullanıldığında alınan verim ve tekrar kullanıma uygunlukları değerlendirilmiş ve kıyaslanmıştır.

Photocatalytic Dye Removal And Mineralization From Wastewater

One of the most important environmental problems for the coming years is water pollution and water scarcity. For this reason, advanced treatment of wastewater from production facilities such as the textile industry, which consumes large amounts of water through dyeing plants, is very important. Improper treatment of these wastewaters has toxic and carcinogenic effects on human and living environment. Complex structures of dyestuffs make the treatment of the water contaminated by them quite difficult. Therefore, classical treatment methods are insufficient. Recently, photocatalytic method, an advanced treatment technique, has begun to attract interest on dye removal. In this study, removal and mineralization of cationic dye (methylene blue) from aqueous solution by photocatalytic method was studied. The reactor used for the experiments was specially designed in the laboratory. UV-C lamps are used as ultraviolet light source. TiO2 and ZnO as the catalyst most widely used two catalysts were selected. In addition to the mineralization study, the optimum pH of the catalysts, the efficiency obtained when used as a mixture and their suitability for reuse were evaluated and compared.

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