An examination of the treatability of a simulated textile wastewater containing Maxilon Red BL-N

Basibuyuk M., Forster C.

PROCESS BIOCHEMISTRY, vol.32, no.6, pp.523-527, 1997 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 32 Issue: 6
  • Publication Date: 1997
  • Doi Number: 10.1016/s0032-9592(97)00007-1
  • Journal Name: PROCESS BIOCHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.523-527
  • Keywords: textile wastes, dyes, biodegradation, adsorption, Langmuir equation, COLOR REMOVAL, WATER, DYES
  • Çukurova University Affiliated: Yes

Abstract

A cascade sequence of four biological aerated filters was used to examine the treatment of a simulated textile waste. The dye component of the synthetic wastewater was Maxilon Red BL-N, which was added at 25 and 50 mg/litre. The presence of the dye caused a very slight deterioration in the performance of the overall system in terms of COD removal. A high colour removal (99%) was achieved with both the concentrations tested, with the first reactor removing the majority (96%). Adsorption studies showed that the dye-sludge system conformed to the Langmuir equation but the application of a mass balance model for a multi-stage reactor system showed discrepancies between the calculated dye concentrations and those measured experimentally. It is suggested that this was due to competition for the adsorption sites. A comparison of the binding potential of the reactors (based on the Langmuir maximum adsorption capacity) with the mass of dye removed during the test periods suggests that a significant amount of biodegradation is taking place. (C) 1997 Elsevier Science Ltd.