Isothermal Adsorption of Steroid Estrogens onto Aerobic Granular Sludge

JI Shu-lan; YANG Yuan-yuan; QIN Zhen-ping; LI Jian-ting; SUN Tong

doi:10.3969/j.issn.0254-0037.2009.11.017

Journal of Beijing University of Technology > 2009 > 35(11): 1537-1542. > DOI: 10.3969/j.issn.0254-0037.2009.11.017

JI Shu-lan, YANG Yuan-yuan, QIN Zhen-ping, LI Jian-ting, SUN Tong. Isothermal Adsorption of Steroid Estrogens onto Aerobic Granular Sludge[J]. Journal of Beijing University of Technology, 2009, 35(11): 1537-1542. DOI: 10.3969/j.issn.0254-0037.2009.11.017

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Isothermal Adsorption of Steroid Estrogens onto Aerobic Granular Sludge

College of Environment and Energy Engineering, Beijing University of Technology, Beijing 100124, China

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Received Date: June 09, 2008
Available Online: December 09, 2022

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Abstract

In order to research the adsorption of estrone (E1) , 17β-estradiol (E2) and 17α-ethynylestradiol (EE2) onto aerobic granular sludge, the adsorption balance time and the biosorption behavior under different temperatures were studied.The experiment data were fit with Freundlich equation and Langmuir equation.The structure of AGS was observed by SEM.The results show that the adsorption equilibrium is within 40 min, and the maximum adsorption capacity (q_max) decreases with increasing temperature.The q_max s of E1、E2、EE2 are 60.98, 58.82, and 82.64 μg/g respectively at 20 ℃.This adsorption process is in conformity with the isothermal adsorption equation of Langmuir and Freundlich with R² correlation coefficient between 0.93~0.98 and 0.92~0.98, respectively.The results of SEM show that there are changes in the internal and external morphology of AGS.
- aerobic granular sludge,
- adsorption isotherms,
- estrone,
- 17β-estradiol,
- 17α-ethynylestradiol,
- SEM

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