Advanced oxidation of commercial textile biocides in aqueous solution: Effects on acute toxicity and biomas inhibition

I. Arslan-Alaton*, G. Eremektar, F. Germiril-Babuna, G. Insel, H. Selcuk, B. Ozerkan, S. Teksoy

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13 Atıf (Scopus)

Özet

In the present study, the decomposition of two biocides used in the textile finishing process with Advanced Oxidation Processes (AOPs) has been studied. Different AOPs, i.e O3/OH-, TiO2/UV-A and Fe2+/H2O2 have been used representing mutually combined components of the chemically and photochemically driven advanced oxidation systems. The course of reaction was examined by changes in chemical oxygen demand (COD), total organic carbon (TOC) and acute toxicity towards the water flea Daphnia magna (assessed in terms of the effective dilution ratio LD50). Particular attention has been paid to determine the inhibitory effect of raw and ozonated biocides on biological activated sludge consortium at concentrations typically encountered in textile finishing effluents. Significant oxidation and mineralization of both biocides could be achieved employing ozonation at pH = 11.5 and heterogeneous photocatalysis (TiO2/UV-A) at pH = 5.0, whereas Fenton's reagent appeared to be less effective in COD and acute toxicity abatement.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)309-316
Sayfa sayısı8
DergiWater Science and Technology
Hacim52
Basın numarası10-11
DOI'lar
Yayın durumuYayınlandı - 2005

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