Effect of HBT on the stability of laccase during the decolourization of textile wastewaters

Khlifi R., Sayadi S., Belbahri L., WOODWARD S., Mechichi T.

Journal of Chemical Technology and Biotechnology, cilt.84, sa.12, ss.1828-1833, 2009 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 84 Sayı: 12
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1002/jctb.2253
  • Dergi Adı: Journal of Chemical Technology and Biotechnology
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1828-1833
  • Anahtar Kelimeler: 1-hydroxybenzotriazole, Dyes, Laccase, Mediator, Stability, Textile industry
  • Isparta Uygulamalı Bilimler Üniversitesi Adresli: Evet

Özet

BACKGROUND: This study concerns the assessment of laccase stability during textile industry effluent treatment by laccase in the presence of a mediator RESULTS: The effects of 1-hydroxybenzotriazole (HBT) and textile wastewater on the stability of a crude laccase prepared from cultures of Trametes trogii during the process of textile industry effluent decolourization were determined. HBT was essential for decolourization of effluent by laccase. Decolourization efficiency decreased when effluent was repeatedly added to the reaction mixture, suggesting inhibition of laccase during the process. Stability of the laccase was not affected by different concentrations of effluent, but inactivation was proportional to HBT concentration. CONCLUSION: Experimental results showed that a redox mediator such as HBT was required for high decolourization rate of textile industry effluent; however free radicals generated from this compound inactivated the laccase used in the process. © 2009 Society of Chemical Industry.