Review paper on current technologies for decolourisation of textile wastewaters: perspectives for anaerobic biotechnology

A.B. dos Santos, F.J. Cervantes-Carillo, J.B. van Lier

Research output: Contribution to journalArticleAcademicpeer-review

846 Citations (Scopus)

Abstract

Dyes are natural and xenobiotic compounds that make the world more beautiful through coloured substances. However, the release of coloured wastewaters represents a serious environmental problem and a public health concern. Colour removal, especially from textile wastewaters, has been a big challenge over the last decades, and up to now there is no single and economically attractive treatment that can effectively decolourise dyes. In the passed years, notable achievements were made in the use of biotechnological applications to textile wastewaters not only for colour removal but also for the complete mineralization of dyes. Different microorganisms such as aerobic and anaerobic bacteria, fungi and actinomycetes have been found to catalyse dye decolourisation. Moreover, promising results were obtained in accelerating dye decolourisation by adding mediating compounds and/or changing process conditions to high temperatures. This paper provides a critical review on the current technologies available for decolourisation of textile wastewaters and it suggests effective and economically attractive alternatives. (C) 2006 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)2369-2385
JournalBioresource Technology
Volume98
Issue number12
DOIs
Publication statusPublished - 2007

Keywords

  • azo-dye reduction
  • waste-water treatment
  • sp strain bn6
  • redox mediators
  • reactive dyes
  • methanogenic conditions
  • advanced oxidation
  • granular sludge
  • color removal
  • biological decolorization

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