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 journalArticlepeer-review

12 Citations (Scopus)


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
Issue number3
Publication statusPublished - 2003 May
Externally publishedYes

Bibliographical note

Funding Information:
This work was partially supported by the Ministry of Science and Technology (MOST), Korea.


  • Coagulation
  • Copper
  • Ferric Chloride
  • Filtration
  • Limestone

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


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