Laccase-Catalyzed Conversion of Natural and Synthetic Hormones from a Municipal Wastewater

Abstract

The Trametes versicolor-derived laccase-catalyzed oxidation of natural estrogens (estrone-E1; 17β-estradiol-E2; and estriol-E3) and a synthetic estrogen (17α-ethinylestradiol-EE2) was studied in synthetic water and municipal wastewater to optimize the process for steroid estrogen removal in wastewater. the optimal pH for each studied steroid estrogen oxidation was approximately 6 in synthetic water. This research also focused on the wastewater matrix effect on developed enzymatic treatment. at pH 7.0 and 25±1 °C, the experiments showed that the laccase-catalyzed system for the removal of steroid estrogens was not significantly affected by the municipal wastewater matrix. Laccase activity of 20 U/ml was sufficient to achieve complete removal of studied steroid estrogens in both synthetic water and municipal wastewater. Moreover, 1-hydroxy-benzotriazole, when used as a mediator, improved laccase-catalyzed system efficiency, thus decreasing the overall cost of the enzymatic system. © 2007 Elsevier Ltd. All rights reserved.

Department(s)

Civil, Architectural and Environmental Engineering

Comments

Institut national de la recherche scientifique, Grant None

Keywords and Phrases

Endocrine disrupter; HBT; Kinetic study; Laccase; Steroid estrogen; Wastewater

International Standard Serial Number (ISSN)

0043-1354

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Elsevier; IWA Publishing, All rights reserved.

Publication Date

01 Jan 2007

PubMed ID

17585984

Link to Full Text

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