Characterization of potassium hydroxide modified anthracite particles and enhanced removal of 17 alpha-ethinylestradiol and bisphenol A | |
He, Jing1; Zhou, Qiuhong1; Guo, Jinsong1,2; Fang, Fang1 | |
刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH |
2018-08-01 | |
卷号 | 25期号:22页码:22224-22235 |
关键词 | Anthracite Particles Potassium Hydroxide Modification Adsorption 17 Alpha-ethinylestradiol Bisphenol a Mechanisms |
ISSN号 | 0944-1344 |
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 m(2) g(-1) and 0.38 mmol g(-1) (increased by 101 and 217%, respectively) for 4 M KOH treatments, but decreased to 10.09 m(2) g(-1) and 0.12 mmol g(-1) for 10 M KOH treatments. We selected 4 M KOH-modified anthracite particles to remove 17 alpha-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 pi-pi 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. |
资助项目 | National Science and Technology Supporting Program of China[2012BAJ25B09] ; National Science and Technology Supporting Program of China[2012BAJ25B06] |
WOS研究方向 | Environmental Sciences & Ecology |
语种 | 英语 |
出版者 | SPRINGER HEIDELBERG |
WOS记录号 | WOS:000440115600084 |
内容类型 | 期刊论文 |
源URL | [http://119.78.100.138/handle/2HOD01W0/6562] |
专题 | 中国科学院重庆绿色智能技术研究院 |
作者单位 | 1.Chongqing Univ, Key Lab Three Gorges Reservoir Reg Ecoenvironm, Minist Educ, Chongqing 400045, Peoples R China 2.Chinese Acad Sci, Key Lab Reservoir Aquat Environm, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R 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 17 alpha-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 17 alpha-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 17 alpha-ethinylestradiol and bisphenol A".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 25.22(2018):22224-22235. |
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