Physico-chemical treatment of indigo dye wastewater

B. Manu

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)


In the present study, colour removal and chemical oxygen demand removal from indigo dye wastewater have been evaluated using various coagulants/ flocculants. Laboratory-scale experiments were conducted using chemical coagulants-flocculants on synthetic as well as actual indigo dye wastewater and under ambient liquid temperature. Up to 99% colour removal was observed during treatment of synthetic indigo dye effluent with FeSO4, alum, polyelectrolyte and lime. Colour removal efficiencies of up to 97%, 97% and 95% were observed when denim plant wastewater (equalisation tank) was treated with alum, lime and FeSO 4 at dosages of 2, 2.5 and 2.5 g/l, respectively. Up to 95%, 94% and 87% colour removal efficiencies were observed when denim plant (dyebath) wastewater was treated with alum, lime and FeSO 4 at dosages of 225, 1000 and 225 mg/l, respectively.

Original languageEnglish
Pages (from-to)197-202
Number of pages6
JournalColoration Technology
Issue number3
Publication statusPublished - 01-06-2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry (miscellaneous)
  • Chemical Engineering(all)
  • Materials Science (miscellaneous)


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