Toxicity identification of effluent from a semiconductor lead frame manufacturing factory

Jisu Yoo, Sae Bom Kim, Woo Keun Kim, Jinho Jung

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The acute toxicity of lead frame effluent to Daphnia magna was found to be 22.62 TU, which far exceeded the toxicity discharge limit in Korea (<1 TU). TIE phases I and II result suggest that the mixture of Ag, Cu and CN were likely responsible for the observed toxicity, and this was confirmed by mass balance approach (TIE phase III). In addition, the Visual MINTEQ simulation suggested the presence of [Ag(CN)2]- and [Cu(CN)3]2- complexes in the effluent. Therefore, TIE procedures with chemical speciation modeling were effective for identifying the cause of acute toxicity in industrial effluents.

Original languageEnglish
Pages (from-to)494-498
Number of pages5
JournalJournal of Industrial and Engineering Chemistry
Volume20
Issue number2
DOIs
Publication statusPublished - 2014 Mar 25

Keywords

  • Acute toxicity
  • Copper
  • Cyanide
  • Daphnia magna
  • Silver

ASJC Scopus subject areas

  • Chemical Engineering(all)

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