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The effect of pre-ozone oxidation on acute toxicity and inert soluble COD fractions of a textile finishing industry wastewater

  • Hüseyin Selçuk
  • , Gulen Eremektar
  • , Süreyya Meriç*
  • *Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: Dergiye katkıMakalebilirkişi

49 Atıf (Scopus)

Özet

The present work evaluates pre-ozonation for removal of acute toxicity, color and COD as well as reduction of inert soluble COD fractions in two wastewater samples (S1 and S2) taken from a textile finishing industry, located in Istanbul (Turkey). The wastewater samples were oxidized at original pH of 8.6-8.8 under 18.5-24 mg/L of applied ozone doses. Acute toxicity was monitored using Daphnia magna. The results showed that pre-ozonation improved the biodegradability and reduced the acute toxicity. Acute toxicity in raw wastewaters was reduced by 80-90% using 129-200 mg/L transfered ozone (TrO3) concentrations. At this point, 86-96% of color, 33-39% of soluble COD and 57-64% of total COD were removed from wastewaters. Both color and COD parameters were found related to the acute toxicity of the wastewater. Pre-ozonation decreased the inert soluble COD fraction (SI) of raw wastewater while soluble product formation (SP) increased slightly (5-10 mg/L). However, residual COD (the sum of SI and SP) remained below discharge limit.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)254-260
Sayfa sayısı7
DergiJournal of Hazardous Materials
Hacim137
Basın numarası1
DOI'lar
Yayın durumuYayınlandı - 1 Eyl 2006

Finansman

This work was partly supported by Scientific Research Council of Turkey (TUBITAK; IÇTAG-Ç035) and ITU Research Development Center. Biological characterization was realized in research laboratory of Environmental Biotechnology sponsored by TUBITAK. The technical support by Arda Yildiz and Volkan Enç is appreciated.

FinansörlerFinansör numarası
ITU Research Development Center
Scientific Research Council of Turkey
TUBITAKIÇTAG-Ç035

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