Adsorption studies of 17β-estradiol from aqueous solution using a novel stabilized Fe–Mn binary oxide nanocomposite
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The removal of 17β-estradiol (E2) from contaminated water on nanoscale Fe–Mn binary oxide-loaded multiwalled carbon nanotubes (MWCNTs/FMBO) was evaluated in this work. The characterizations of the mesoporous adsorbent were analyzed by using SEM, TEM, VSM, XRD, XPS, and FTIR measurements. The effects of experimental conditions in E2 removal, including stabilizer additional level, adsorption time, initial E2 concentration, solution pH, reaction temperature, and foreign ions, were examined. The maximum monolayer adsorption capacity (qm) of MWCNTs/FMBO for E2 in the experiment was 47.25 mg/g as verified by the Langmuir sorption isotherm study. The adsorption process was pH-sensitive with an optimum pH of 7.0. On the kinetics study, the adsorption data could be satisfactorily fitted by the pseudo-second-order kinetics. Thermodynamic parameters indicated that the adsorption process was spontaneous and exothermal. In addition, the foreign ions did not show any noticeable inhibition for E2 removal from the water solution except for PO43− that was adversely affected for E2 uptake than other anions in a certain concentration. The adsorption capacities of the mesoporous adsorbent remained at 86.16% even after five adsorption–desorption cycles without significant loss of capacity, which demonstrated the stability and reusability for further removal of E2. Moreover, both hydrogen bond and π–π interaction might be the dominating adsorption mechanisms for E2 adsorption onto MWCNTs/FMBO.
KeywordsMultiwalled carbon nanotubes Fe–Mn binary oxides Nanoparticles 17β-Estradiol Adsorption mechanism
This research was financially supported by the National Natural Science Foundation of China (Grant No. 51609268) and the Key Project of Technological Innovation in the Field of Social Development of Hunan Province, China (Grant Nos. 2016SK2010 and 2016SK2001).
- Li MF, Liu YG, Liu SB, Shu D, Zeng GM, Hu XJ, Tan XF, Jiang LH, Yan ZL, Cai XX (2017b) Cu(II)-influenced adsorption of ciprofloxacin from aqueous solutions by magnetic graphene oxide/nitrilotriacetic acid nanocomposite: competition and enhancement mechanisms. Chem Eng J 319:219–228CrossRefGoogle Scholar
- Moradi O, Yari M, Zare K, Mirza B, Najafi F (2012) Carbon nanotubes: a review of chemistry principles and reactions. Fullerene Sci Technol 20:138–151Google Scholar
- Ning Q, Liu Y, Liu S, Jiang L, Zeng G, Zeng Z, Wang X, Li J, Kare Z (2017) Fabrication of hydrochar functionalized Fe–Mn binary oxide nanocomposites: characterization and 17β-estradiol removal. Rsc Advances 7: 37122–37129Google Scholar
- Rodgers-Gray TP, Jobling S, Kelly C, Morris S, Brighty G, Waldock MJ, Sumpter JP, Tyler CR (2001) Exposure of juvenile roach (Rutilus rutilus) to treated sewage effluent induces dose-dependent and persistent disruption in gonadal duct development. Environ Sci Technol 35:462–470CrossRefGoogle Scholar
- Tomoko F, Satoshi I, Makoto K, Osamu S, Ikuo A (2006) Absorbability of estrone and 17beta-estradiol in water onto activated carbon. Water Research 40: 241–248Google Scholar
- Yin Z, Liu Y, Liu S, Jiang L, Tan X, Zeng G, Li M, Liu S, Tian S, Fang Y (2018) Activated magnetic biochar by one-step synthesis: Enhanced adsorption and coadsorption for 17β-estradiol and copper. Science of the Total Environment 639: 1530Google Scholar
- Yin Z, Liu Y, Tan X, Jiang L, Zeng G, Liu S, Tian S, Liu S, Liu N, Li M (2019) Adsorption of 17β-estradiol by a novel attapulgite/biochar nanocomposite: Characteristics and influencing factors. Process Safety and Environmental Protection 121: 155–164Google Scholar
- Zeng W, Liu Y-g, Hu X-j, Liu S-b, Zeng G-m, Zheng B-h, Jiang L-h, Guo F-y, Ding Y, Xu Y (2016) Decontamination of methylene blue from aqueous solution by magnetic chitosan lignosulfonate grafted with graphene oxide: effects of environmental conditions and surfactant. RSC Adv 6:19298–19307CrossRefGoogle Scholar