Modifiye Fenton Prosesi ile Azo Boyaların Dekolorizasyonu

Öz

Bu çalışmada C.I. Reaktif Orange 127 (RO 127) ve C.I. Reaktif Yellow 145 (RY 145) boyalarının modifiye edilmiş Fenton prosesi (Fe0/H2 O2 ) ile renk giderimi araştırılmıştır. Deneylerde optimum çalışma koşullarının belirlenmesi için pH, Fe0 ve H2 O2 konsantrasyonu için çalışma yürütülmüştür. Bu çalışmada azo boya ve polivinil alkol (PVA) içeren sentetik tekstil atıksuyunun renksizleştirilmesinde modifiye edilmiş Fenton prosesinin verimli bir uygulama olduğunu göstermektedir. Optimum çalışma koşullarının belirlenmesi için yapılan deneylerde RO 127 için pH=3.5, [H2 O2 ] = 20 mg/L, [Fe0]= 80 mg/L ve RY 145 için ise pH = 4.0, [H2 O2 ] = 20 mg/L, [Fe0] = 60 mg/L tespit edildi. Belirlenen optimum şartlar altında 60 dakikalık temas süresinde RO 127 ve RY 145 için sırasıyla %92 ve %80 oranında renk giderimi sağlanmıştır.

Anahtar Kelimeler

• Renk giderimi, Fenton prosesi, Demir tozu, RY 145, RO 127

DECOLORIZATION OF AZO DYES BY MODIFIED FENTON PROCESS

Öz

In the present study, the decolorization of C.I. Reactive Orange 127 (RO 127) and C.I. Reactive Yellow 145 (RY 145) by modified-Fenton process (Fe0/H2 O2 ) was investigated. The experiments were carried out to determine the process’s optimal operational conditions: pH, Fe0 and H2 O2 concentrations. This study shows that modified Fenton process is an efficient process for the decolorization of synthetic textile wastewater including azo dye and polyvynil alcohol (PVA). The optimal conditions experimentally determined was found to be initial pH = 3.5, [H2 O2 ] = 20 mg/L, [Fe0]= 80 mg/L for RO 127 and pH = 4.0, [H2 O2 ] = 20 mg/L, [Fe0] = 60 mg/L for RY 145. Under the optimal conditions, 92% and 80% decolorization were achieved after 60 min of reaction for RO 127 and RY 145, respectively.

Anahtar Kelimeler

• Decolorization, Fenton’s process, iron powder, RY 145, RO 127.

Kaynakça

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