Process development for the removal of copper from wastewater using ferric/limestone treatment

Chang Duk Kang, Sang Jun Sim, Young Sang Cho, Woo Sik Kim

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The removal of copper from wastewater by ferric/limestone coagulation followed by screen filtration was carried out at a laboratory scale. The optimum coagulant (FeCl3) dose and working pH were 50 mg/l of Fe(III) and pH 7.5, respectively, through jar tests. For the efficient removal of copper from wastewater, we developed a novel process including the co-precipitation of copper with FeCl3, alkalization in a limestone aeration bed, and separation of precipitates in a sedimentation tank coupled with internal stainless steel screen filter. The performance results showed that removal of copper from the solution was over 99.5%. The pH was effectively maintained over 7.5 in limestone bed during the whole process. Ferric hydroxide/copper aggregates were removed over 99% by stainless steel screen filter of 1,450 mesh. Periodic air backwashing alleviated fouling of the filter surface.

Original languageEnglish
Pages (from-to)482-486
Number of pages5
JournalKorean Journal of Chemical Engineering
Volume20
Issue number3
DOIs
Publication statusPublished - 2003 May

Keywords

  • Coagulation
  • Copper
  • Ferric Chloride
  • Filtration
  • Limestone

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Fingerprint Dive into the research topics of 'Process development for the removal of copper from wastewater using ferric/limestone treatment'. Together they form a unique fingerprint.

  • Cite this