Decolorization of dyes and textile wastewater by potassium permanganate

Xiang Rong Xu*, Hua Bin Li, Wen Hua Wang, Ji Dong Gu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

90 Scopus citations

Abstract

Decolorization of 10 types of dye solutions by potassium permanganate was studied. Effects of reaction conditions on the decolorization efficiency were examined in batch experiments. The pH value had a significant effect on the decolorization efficiency. When pH value <1.5, the decolorization efficiency was very high. When pH value >4.0, the dye solutions were almost not decolorized. Concentration of potassium permanganate and temperature also showed significant effects on the decolorization efficiency. The decolorization rate of dye solutions by potassium permanganate was rapid, and most of dye solutions can be decolorized effectively. The results of total organic carbon indicated that dye solutions were degraded incompletely by potassium permanganate. The results of treatment of textile wastewater by potassium permanganate indicated that the oxidation with potassium permanganate might be used as a pre-treatment process before biological treatment.

Original languageEnglish
Pages (from-to)893-898
Number of pages6
JournalChemosphere
Volume59
Issue number6
DOIs
StatePublished - May 2005
Externally publishedYes

Keywords

  • Decolorization
  • Dyes
  • Potassium permanganate
  • Wastewater treatment

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