Homogeneous catalytic wet-air oxidation for the treatment of textile wastewater

Lecheng Lei, Guohua Chen, Xijun Hu, Po Lock Yue

Research output: Journal article publicationJournal articleAcademic researchpeer-review

14 Citations (Scopus)

Abstract

An extensive series of experiments was performed to identify suitable catalysts to increase the reaction rate of wet-air oxidation of textile wastewater at relatively mild temperatures and pressures. Wastewater types treated included natural-fiber desizing wastewater, synthetic-fiber desizing wastewater, and printing and dyeing wastewater. Experimental results indicated that all catalysts tested in this investigation significantly increased the chemical oxygen demand (COD) and total organic carbon (TOC) removal rates and total COD and TOC removals. Of all catalysts tested, copper salts were the most effective. Anions in the salt solutions played a role in the catalytic process. Nitrate ions were more effective than sulfate ions. Similarly, copper nitrates were more effective than copper sulfates. A mixture of salts containing different metals performed better than any single salt.
Original languageEnglish
Pages (from-to)147-151
Number of pages5
JournalWater Environment Research
Volume72
Issue number2
DOIs
Publication statusPublished - 1 Jan 2000
Externally publishedYes

Keywords

  • Desizing wastewater
  • Printing and dyeing wastewater
  • Salt mixture
  • Single salt

ASJC Scopus subject areas

  • Environmental Chemistry
  • Water Science and Technology

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