Effect of titanium dioxide nanoparticles on Gamma-ray treatment of phenol in different matrices: Implications in toxicity toward Daphnia Magna

Sung Wook Kang, Seung Bo Shim, Jisu Yoo, Jinho Jung

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Gamma-ray treatment of phenol was studied in terms of both chemical degradation and toxicological change. About 90 % of phenol (5.0 × 10 -4 M) in ultra-pure water (UW) was eliminated by gamma-irradiation at a dose of 10 kGy, but acute toxicity was dramatically increased, particularly for dose of 1 kGy, due to the formation of more toxic by-products such as hydroquinone, benzoquinone, resorcinol and catechol. The addition of TiO2 nanoparticles had little effect on the removal of phenol in UW, but substantially enhanced the mineralization of phenol compared with gamma-irradiation alone. Additionally, degradation of phenol by gamma-irradiation was inhibited in a wastewater effluent (WE) matrix, likely due to the presence of dissolved organic carbon (22.06 mg L-1). Furthermore, lower concentrations of toxic by-products were generated both in WE and in the presence of TiO2 nanoparticles, resulting in reduction of toxicity increase by gamma-irradiation. Meanwhile, the toxicity of gamma-ray treated phenol in WE was well estimated with simple summation of individual toxicity of phenol and by-products (R2 = 0.9678).

Original languageEnglish
Pages (from-to)893-897
Number of pages5
JournalBulletin of Environmental Contamination and Toxicology
Volume89
Issue number4
DOIs
Publication statusPublished - 2012 Oct 1

Fingerprint

Daphnia
Gamma Rays
Phenol
Gamma rays
Nanoparticles
Titanium dioxide
Phenols
Toxicity
Waste Water
Irradiation
Byproducts
Effluents
Wastewater
Poisons
Degradation
Water
Organic carbon
titanium dioxide
Toxicology
Dosimetry

Keywords

  • Acute toxicity
  • Daphnia magna
  • Effluent
  • Gamma rays
  • Radiation treatment
  • Titanium dioxide

ASJC Scopus subject areas

  • Health, Toxicology and Mutagenesis
  • Pollution
  • Toxicology

Cite this

Effect of titanium dioxide nanoparticles on Gamma-ray treatment of phenol in different matrices : Implications in toxicity toward Daphnia Magna. / Kang, Sung Wook; Shim, Seung Bo; Yoo, Jisu; Jung, Jinho.

In: Bulletin of Environmental Contamination and Toxicology, Vol. 89, No. 4, 01.10.2012, p. 893-897.

Research output: Contribution to journalArticle

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