Biodegradability, toxicity, and photochemical treatment of a textile surfactant


Babuna F. F. , TURKER C., CABUK M. O. , Hanci T. O.

DESALINATION AND WATER TREATMENT, cilt.57, ss.26286-26293, 2016 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 57 Konu: 54
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1080/19443994.2016.1159995
  • Dergi Adı: DESALINATION AND WATER TREATMENT
  • Sayfa Sayıları: ss.26286-26293

Özet

This study investigates the biodegradability, ecotoxicity, and photochemical treatment of a segregated textile bath discharge carrying a commonly applied nonionic surfactant. The wastewater having a total COD of 1,085mg/L is completely soluble in nature. The COD distribution of this wastewater at different molecular size cut-off levels shows a fluctuating nature. Around 40% of the COD originates from a molecular weight cut-off range less than 30kDa fraction. The wastewater is observed to contain an initially inert soluble COD of about 20mg/L and the residual COD level achieved after passing it from aerobic biological treatment is only 40mg/L indicating high biodegradability. After 120min of UV-C application similar TOC removal efficiencies of 35 and 42% are obtained at pH 4 and pH 7, respectively. Photochemical treatment does not yield significant TOC removals at pH 11. The raw discharge is highly inhibitory toward Vibrio fischeri. 60min of UV-C application lowered ecotoxicity toward V. fischeri.