TPU纳米纤维膜对典型内分泌干扰素的吸附去除

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Abstract A thermoplastic polyurethane nanofiber membrane (TPU-NFM) was successfully synthesized via electrospinning technology. The characteristics of TPU-NFM were evaluated by scanning electron microscopy (SEM) and Fourier transform infrared (FT-IR). The adsorption capacity and adsorption mechanism of bisphenol A (BPA) and 17α-ethylnyestradiol (EE2) onto TPU-NFM were examined by thermodynamic and kinetic experiment. Meanwhile, the effect of environmental factors on membrane adsorption was also carried out. The results showed that TPU-NFM were smooth, uniform in diameter, unique ordered network structure and rich surface functional groups. The adsorption process of BPA onto TPU-NFM could be described by Langmuir adsorption isotherm model and pseudo-second-order adsorption kinetic model. It showed that chemical adsorption of monolayer plays a dominant role in the adsorption process. The maximum adsorption capacity (q_max) was 45.48mg/g, and the maximum adsorption rate (k₂) was 0.754g/(mg·h). The adsorption process of EE2 onto TPU-NFM could be fitted to the Langmuir adsorption isotherm model and Elovich adsorption kinetic model, the q_maxwas 38.22mg/g and a was 5.355mg/(g·h), It proved that the adsorption of EE2 onto TPU-NFM comprehensive results of several adsorption mechanisms. In addition, TPU-NFM is not sensitive to salinity and pH in the environment.

Key words： electrospinning TPU-NFM endocrine disrupting chemicals adsorption mechanism environment conditions

Received: 07 April 2021

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X703

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	ZHOU Yao
	SUN Jiao-xia
	ZHENG Han-yue
	FAN Jian-xin
	HU Ying

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ZHOU Yao,SUN Jiao-xia,ZHENG Han-yue等. Adsorption behaviors of typical endocrine disrupting chemicals by TPU nanofiber membrane[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(12): 5680-5687.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I12/5680

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