Toxicity identification and reduction of wastewaters from a pigment manufacturing factory

Hun Je Jo, Eun Joo Park, Ki Jong Cho, Eun Hee Kim, Jinho Jung

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

In this study, major toxicants in pigment wastewaters (i.e. raw wastewater and effluent) were determined by toxicity identification evaluations (TIEs), and changes in their toxicities due to combined gamma-ray (γ-ray) and ozone treatments were evaluated. From TIE results using Daphnia magna, Cr(VI) and o-toluidine were identified as major toxicants in the raw wastewater with concentrations of 2.47 and 25.3 mg l -1, respectively. This was confirmed by subsequent spiking and mass balance approaches. For effluent, TIE results suggested that organic anions were likely responsible for the observed toxicities. Toxicity reduction tests showed that γ-rays with ozone treatment after coagulation was more efficient in reducing toxicities in the raw wastewater (3.9-2.0 TU) than γ-ray treatment alone (3.9-3.1 TU). For pigment effluent, γ-ray/O 3 treatment resulted in a complete removal of the acute toxicity.

Original languageEnglish
Pages (from-to)949-957
Number of pages9
JournalChemosphere
Volume70
Issue number6
DOIs
Publication statusPublished - 2008 Jan 1

Fingerprint

Pigments
Toxicity
Industrial plants
pigment
Wastewater
manufacturing
toxicity
wastewater
Effluents
2-toluidine
Ozone
effluent
ozone
Coagulation
Gamma rays
coagulation
Anions
anion
mass balance
evaluation

Keywords

  • Chromium
  • Daphnia magna
  • Gamma-rays
  • o-Toluidine
  • TIE
  • TRE

ASJC Scopus subject areas

  • Environmental Chemistry
  • Environmental Science(all)

Cite this

Toxicity identification and reduction of wastewaters from a pigment manufacturing factory. / Jo, Hun Je; Park, Eun Joo; Cho, Ki Jong; Kim, Eun Hee; Jung, Jinho.

In: Chemosphere, Vol. 70, No. 6, 01.01.2008, p. 949-957.

Research output: Contribution to journalArticle

Jo, Hun Je ; Park, Eun Joo ; Cho, Ki Jong ; Kim, Eun Hee ; Jung, Jinho. / Toxicity identification and reduction of wastewaters from a pigment manufacturing factory. In: Chemosphere. 2008 ; Vol. 70, No. 6. pp. 949-957.
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