Removal of BPA and EE2 from Water by Mn-Fe Embedded in Acicular Mullite

doi:10.13227/j.hjkx.201908009

	Removal of BPA and EE2 from Water by Mn-Fe Embedded in Acicular Mullite
	Zhou, Qiu-Hong 1,2; Long, Tian-Yu 1; He, Jing 1,2; Guo, Jin-Song 1; Gao, Jun-Min 1
刊名	Huanjing Kexue/Environmental Science
	2020
卷号	41 期号:2 页码:763-772
ISSN号	02503301
DOI	10.13227/j.hjkx.201908009
英文摘要	Acicular mullite was modified by ferromanganese binary metal oxide (Mn-Fe) to improve the removal efficiency of endocrine disruptors by traditional water treatment practices, using the commercial ceramsite for comparison. The physicochemical properties of synthesized samples were characterized, and batch adsorption experiments were carried out to study the adsorption efficiency of bisphenol A (BPA) and 17α-ethinylestradiol (EE2) on synthesized samples, investigating how solution chemistry and regeneration may affect the adsorption efficiency. Results show that the manganese oxide loaded on the acicular mullite was manganite with an average particle size of 450 nm. After Mn-Fe impregnation, the specific surface area, cumulative pore volume, and mesoporous ratio of the acicular mullite were significantly increased. The virgin acicular mullite had no removal ability for BPA and EE2, and the removal efficiency of BPA and EE2 by Mn-Fe impregnated acicular mullite were significantly increased. Acicular mullite was more suitable as support material for modified filter material. The adsorption kinetics of BPA and EE2 on Mn-Fe-M were fitted with the intra-particle diffusion model, and found to be mainly affected by intra-particle diffusion. The isothermal adsorption data was best fitted to the Langmuir-Freundlich model, and the maximum adsorption capacities of BPA and EE2 were 5.043 mg•g-1 and 3.990 mg•g-1, respectively. Thermodynamic experiments showed that the adsorption of BPA and EE2 by Mn-Fe embedded in acicular mullite was an endothermic reaction, and the temperature increase is beneficial to the adsorption. The adsorption amount of BPA and EE2 on Mn-Fe embedded in acicular mullite decreased with increasing pH. The increase of ionic strength favored the adsorption removal of BPA and EE2. The co-existing anion of SO42- promoted the adsorption of both BPA and EE2, while CO32- and PO43- inhibited the adsorption of both BPA and EE2 on Mn-Fe embedded in acicular mullite. The adsorbent regeneration test showed that Mn-Fe embedded acicular mullite was an easily recyclable adsorbent. Mn-Fe embedded in high-porosity acicular mullite can effectively remove typical endocrine disruptors in water, and it can be potentially extensively used to alleviate the problem of low removal efficiency of endocrine disrupting chemicals in traditional water treatment practice. © 2020, Science Press. All right reserved.
语种	中文
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/9870]
专题	中国科学院重庆绿色智能技术研究院
作者单位	1.College of Environment and Ecology, Chongqing University, Chongqing; 400045, China; 2.Chongiqng Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing; 400714, China
推荐引用方式 GB/T 7714	Zhou, Qiu-Hong,Long, Tian-Yu,He, Jing,et al. Removal of BPA and EE2 from Water by Mn-Fe Embedded in Acicular Mullite[J]. Huanjing Kexue/Environmental Science,2020,41(2):763-772.
APA	Zhou, Qiu-Hong,Long, Tian-Yu,He, Jing,Guo, Jin-Song,&Gao, Jun-Min.(2020).Removal of BPA and EE2 from Water by Mn-Fe Embedded in Acicular Mullite.Huanjing Kexue/Environmental Science,41(2),763-772.
MLA	Zhou, Qiu-Hong,et al."Removal of BPA and EE2 from Water by Mn-Fe Embedded in Acicular Mullite".Huanjing Kexue/Environmental Science 41.2(2020):763-772.