Enhanced adsorption behavior of 17β‐estradiol by anaerobic granular sludge combined with zero‐valent iron

BACKGROUND The release of natural estrogen 17 β‐estradiol (E2) to the aquatic environment is a matter of concern. Batch experiments were conducted to study the adsorption of E2 by anaerobic granular sludge (AnGS) combined with zero‐valent iron (ZVI). The enhancement mechanism of ZVI for E2 adsorptio...

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Veröffentlicht in:	Journal of chemical technology and biotechnology (1986) 2018-03, Vol.93 (3), p.776-782
Hauptverfasser:	Zhao, Bai‐Hang, Chen, Jie, Zhai, Jie‐Yi, Bian, Wei, Zhang, Jing, Wang, Zhan‐Zhao, Li, Yun, Li, Jun
Format:	Artikel
Sprache:	eng
Schlagworte:	17 β‐estradiol 17β-Estradiol Adsorption anaerobic granular sludge Aquatic environment Estrogens Iron Sex hormones Sludge zero‐valent iron
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Zusammenfassung:	BACKGROUND The release of natural estrogen 17 β‐estradiol (E2) to the aquatic environment is a matter of concern. Batch experiments were conducted to study the adsorption of E2 by anaerobic granular sludge (AnGS) combined with zero‐valent iron (ZVI). The enhancement mechanism of ZVI for E2 adsorption by AnGS was also analyzed. RESULTS The E2 adsorption efficiency of AnGs with ZVI was 48% higher than that without ZVI. The optimal conditions for high E2 adsorption efficiency (92.21%) and high equilibrium adsorption capacity (4.92 µg g‐1 VSS) were rZVI/AnGS 1.33, pH 6, and temperature 25°C. E2 adsorption by ZVI/AnGS was a spontaneous and exothermic process, well described by the Freundlich isotherm. CONCLUSION The addition of a suitable amount of ZVI enhanced E2 adsorption by AnGS. © 2017 Society of Chemical Industry
ISSN:	0268-2575 1097-4660
DOI:	10.1002/jctb.5427