Removal of PCP-Na from aqueous systems using monodispersed pompon-like magnetic nanoparticles as adsorbents

Novel monodispersed pompon-like magnetite/chitosan (Fe3O4/CS) composite nanoparticles were synthesized by a solvothermal method and used as adsorbents for the removal of toxic sodium pentachlorophenate (PCP-Na) from aqueous media. The adsorption behavior of PCP-Na on Fe3O4/CS obeyed the Langmuir iso...

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Veröffentlicht in:Water science and technology : a journal of the International Association on Water Pollution Research. - 1986. - 68(2013), 12 vom: 19., Seite 2704-11
1. Verfasser: Liu, Yu (VerfasserIn)
Weitere Verfasser: Yu, Hongbing, Zhan, Sihui, Li, Shengjun, Yang, Hui, Liu, Bo
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Water science and technology : a journal of the International Association on Water Pollution Research
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Magnetite Nanoparticles Water Pollutants, Chemical Chitosan 9012-76-4 Pentachlorophenol D9BSU0SE4T
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520 |a Novel monodispersed pompon-like magnetite/chitosan (Fe3O4/CS) composite nanoparticles were synthesized by a solvothermal method and used as adsorbents for the removal of toxic sodium pentachlorophenate (PCP-Na) from aqueous media. The adsorption behavior of PCP-Na on Fe3O4/CS obeyed the Langmuir isotherm and fitted the pseudo-second-order kinetics model. Thermodynamic parameters showed that the adsorption process was exothermic and spontaneous. Moreover, the adsorption was strongly pH-dependent. The results of XPS, thermodynamics, pH-dependent and desorption studies suggested that electrostatic attraction, hydrogen bonding and π-π interactions were all believed to play a role in PCP-Na adsorption on Fe3O4/CS. Having a saturation magnetization of 22.2 emu · g(-1), the Fe3O4/CS can be easily separated from water with magnets within 2 min. The adsorption equilibrium was achieved quite rapidly (within 30 min) and the maximum removal of PCP-Na (91.5%) was obtained at 25 °C and pH 6.5. The Fe3O4/CS investigated can be used to remove PCP-Na and other contaminants from wastewater 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 7 |a Magnetite Nanoparticles  |2 NLM 
650 7 |a Water Pollutants, Chemical  |2 NLM 
650 7 |a Chitosan  |2 NLM 
650 7 |a 9012-76-4  |2 NLM 
650 7 |a Pentachlorophenol  |2 NLM 
650 7 |a D9BSU0SE4T  |2 NLM 
700 1 |a Yu, Hongbing  |e verfasserin  |4 aut 
700 1 |a Zhan, Sihui  |e verfasserin  |4 aut 
700 1 |a Li, Shengjun  |e verfasserin  |4 aut 
700 1 |a Yang, Hui  |e verfasserin  |4 aut 
700 1 |a Liu, Bo  |e verfasserin  |4 aut 
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773 1 8 |g volume:68  |g year:2013  |g number:12  |g day:19  |g pages:2704-11 
856 4 0 |u http://dx.doi.org/10.2166/wst.2013.557  |3 Volltext 
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