Decolourisation and detoxifying of Remazol Red dye and its mixture using Fenton's reagent

Meric S., Selcuk H., Gallo M., Belgiorno V.

DESALINATION, cilt.173, sa.3, ss.239-248, 2005 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 173 Sayı: 3
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1016/j.desal.2004.09.002
  • Dergi Adı: DESALINATION
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.239-248
  • Anahtar Kelimeler: Fenton's reagent, azo dyes, remazol red 120, remazol brillant blue, remazol yellow 84, colour and COD removal, acute toxicity removal, hydrogen peroxide, Daphnia magna, TEXTILE WASTE-WATER, REACTIVE AZO DYES, HYDROGEN-PEROXIDE, OXIDATION PROCESS, EFFLUENTS, TOXICITY, DEGRADATION, OZONATION, REMOVAL, COAGULATION
  • İstanbul Üniversitesi-Cerrahpaşa Adresli: Hayır

Özet

A systematic approach was followed to optimise pH, temperature and the doses of FeSO(4) and H(2)O(2) for Feton's reagent (FR) to decolourize and detoxify the solutions containing of Remazol Red 120 (RR) dye and its mixture with Remazol Brillant Blue (RB) and Remazol Yellow 84 (RY) reactive dyes. The acute toxicity of each dye composition was measured using D. magna. Optimum pH for RR singly used and for the dye mixture was found 3.5 while optimum temperature was determined 50 degrees C, 40 degrees C and 30 degrees C for 100 mg/l of RR, 200 mg/l of RR and the dye mixture, respectively. More than 98% of colour and 92% of COD removal were obtained for the dye solutions. For obtaining high colour and COD removal H(2)O(2) concentration had to be increased 3 times when RR concentration was doubled whereas FeSO(4) was to be increased 2.5 times for the dye mixture. The results obtained indicate that FR can be assurely used for complete toxicity removal and obtaining high colour and COD efficiency with no toxic effluent on D. magna for the dye solutions studied. Acute toxicity test with H(2)O(2) was useful to evaluate the complete oxidation resulting in practically no residual H(2)O(2) (< 3 mg/l) in the solution.