Characterization of potassium hydroxide modified anthracite particles and enhanced removal of 17α-ethinylestradiol and bisphenol A

doi:10.1007/s11356-018-2287-5

	Characterization of potassium hydroxide modified anthracite particles and enhanced removal of 17α-ethinylestradiol and bisphenol A
	He, Jing 1; Zhou, Qiuhong 1; Guo, Jinsong 1,2; Fang, Fang 1
刊名	Environmental Science and Pollution Research
	2018
卷号	25 期号:22 页码:22224-22235
ISSN号	09441344
DOI	10.1007/s11356-018-2287-5
英文摘要	Anthracite is a natural inorganic-organic hybrid environmentally friendly material, which often is used as a filter medium in water treatment. In this study, we processed anthracite particles using potassium hydroxide (KOH) with different concentrations. The anthracites, before and after treatments, were characterized by Brunauer-Emmett-Teller analysis, scanning electron microscopy, Fourier transform infrared spectrometer, X-ray diffraction, X-ray photoelectron spectroscopy, and Boehm titration. The specific surface area and the amount of total alkalinity of anthracite were 23.73 m2 g−1 and 0.38 mmol g−1 (increased by 101 and 217%, respectively) for 4 M KOH treatments, but decreased to 10.09 m2 g−1 and 0.12 mmol g−1 for 10 M KOH treatments. We selected 4 M KOH-modified anthracite particles to remove 17α-ethinylestradiol (EE2) and bisphenol A (BPA) from water with unmodified anthracite used in control experiments. The pseudo-second-order model fitted well for the whole adsorption process, and intraparticle diffusion was not the unique rate-controlling step. The equilibrium adsorption data fitted well with the Langmuir-Freundlich model, and the adsorption capacities of EE2 and BPA on anthracite particles after 4 M KOH treatments were 0.7914 and 0.4327 mg g−1 (increased by 138 and 97%, respectively), because the active sites markedly increased. The ligand exchange, hydrogen bonds, and π-π electron donor-acceptor interactions were the main adsorption mechanisms. The 4 M KOH-modified anthracite could be promising in large-scale applications, both as filter medium and adsorbent for organic contaminants. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
电子版国际标准刊号	16147499
语种	英语
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/9803]
专题	中国科学院重庆绿色智能技术研究院
作者单位	1.Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, Chongqing University, Chongqing; 400045, China; 2.Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing; 400714, China
推荐引用方式 GB/T 7714	He, Jing,Zhou, Qiuhong,Guo, Jinsong,et al. Characterization of potassium hydroxide modified anthracite particles and enhanced removal of 17α-ethinylestradiol and bisphenol A[J]. Environmental Science and Pollution Research,2018,25(22):22224-22235.
APA	He, Jing,Zhou, Qiuhong,Guo, Jinsong,&Fang, Fang.(2018).Characterization of potassium hydroxide modified anthracite particles and enhanced removal of 17α-ethinylestradiol and bisphenol A.Environmental Science and Pollution Research,25(22),22224-22235.
MLA	He, Jing,et al."Characterization of potassium hydroxide modified anthracite particles and enhanced removal of 17α-ethinylestradiol and bisphenol A".Environmental Science and Pollution Research 25.22(2018):22224-22235.