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KMID : 0382420040300020161
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Korean Journal of Environmental Health Society
2004 Volume.30 No. 2 p.161 ~ p.166
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Impact of Dissolved Wastewater Constituents on Laccase-Catalyzed Treatment of Bisphenol A
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Kim Young-Jin
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Abstract
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The impact of dissolved wastewater constituents on the treatment of synthetic bisphenol A (BPA) solutions was investigated under a variety of reaction conditions. The laccase enzyme from Trametes vesicalor was used for the BPA treatment. The constituents studied included various inorganic salts, organic compounds and heavy metal ions. BPA degradation was inhibited by sulfate, thiosulfate, sulfide, nitrite, and cyanide ions at 25 ㎎/l, 100 ㎎/l, 25 ㎎/l, 150 ㎎/l, and 2.5 ㎎/l, respectively. However, the inhibitive effects of sulfide and sulfite on BPA degradation were diminished by additional aeration to oxidize them. Formaldehyde significantly reduced the rate of BPA degradation at 1.0% among organic compounds studied. Among heavy metal ions tested, Fe(In) substantially suppressed BPA removal at I mM. MgCI₂ and CaCI₂ exhibited great inhibition of BPA degradation at 25 mM.
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