Bisphenol A treatment by the hot persulfate process: Oxidation products and acute toxicity

Tugba Olmez-Hanci*, Idil Arslan-Alaton, Bora Genc

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

192 Citations (Scopus)

Abstract

In this study, a thermally activated persulfate oxidation process was investigated to treat aqueous Bisphenol A (BPA) solution. The effect of temperature (40-50-60-70. °C), initial pH (pH = 3.0, 6.5, 9.0 and 11.0) and persulfate concentration (0-20. mM) on bisphenol A (BPA) and TOC removals was examined. The activation energy for hot persulfate oxidation of BPA was calculated as 184 ± 12. kJ/mol. Acidic and neutral pH values were more favorable for BPA oxidation than basic pH values. TOC removals did not exhibit a specific pattern with varying initial pHs. Gas chromatography/mass spectrometry was employed to identify oxidation products. Several aromatic and a few aliphatic compounds could be detected including benzaldehyde, p-isopropenyl phenol, 2,3-dimethyl benzoic acid, 3-hydroxy-4-methyl-benzoic acid, ethylene glycol monoformate and succinic acid. Acute toxicity tests conducted with Vibrio fischeri indicated that the inhibitory effect of 88. μM BPA solution originally being 58%, increased to 84% after 30. min and decreased to 22% after 90. min hot persulfate treatment that could be attributed to the formation and subsequent disappearance of oxidation products.

Original languageEnglish
Pages (from-to)283-290
Number of pages8
JournalJournal of Hazardous Materials
Volume263
DOIs
Publication statusPublished - 15 Dec 2013

Funding

The financial support of the Scientific and Technological Research Council of Turkey (TUBITAK, Project No: 111Y257) is gratefully acknowledged.

FundersFunder number
TUBITAK111Y257
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu

    Keywords

    • Acute toxicity
    • Bisphenol A
    • GC/MS analyses
    • Hot persulfate treatment
    • Oxidation products

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