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|a eng
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| 100 |
1 |
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|a Zhang, Jun
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Precise adsorption behavior and mechanism of Ni(II) ions on nano-hydroxyapatite
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| 264 |
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1 |
|c 2010
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|b nc
|2 rdacarrier
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| 500 |
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|a Date Completed 04.01.2011
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|a Date Revised 23.09.2019
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|a published: Print
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|a Citation Status MEDLINE
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|a The goal of this study was to synthesize use of hydroxyapatite as a high-efficiency adsorbent for Ni(II) ions, and to study its adsorption behavior. Three tests--Fourier-transform infrared spectroscopy, transmission electron microscopy, and Brunauer-Emmett-Teller were carried out to determine the chemical functionality of the hydroxyapatite powders, to observe its crystal morphology, and to measure the specific surface area. Results indicate that proves the n-HA synthesized by chemical precipitation is an effective adsorbent for the removal of Ni(II) ions from water solution. The synthesized, needle-like nano-hydroxyapatite (n-HA) have a uniform average size of 31.9 X 21.3nm, a large specific surface area (135 m2/g), and typically is a weak crystal with a broad pore distribution. The adsorption isotherm shows the Langmuir model is applicable only when the initial Ni2+ concentration is lower than 0.1 mol/L. Multilayer adsorption was attributed to uneven pore distribution that occurred at higher Ni2+ concentration. The adsorption of Ni2+ onto n-HA was attributed to electrostatic attraction, ion exchange, and dissolution-precipitation reaction. As the result, Ni2+ substitutes Ca2+ and binds with the oxygen atom on the surface, which resulted from the change in crystal-phase composition and in the binding energy of surface elements of n-HA before and after adsorption
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Nickel
|2 NLM
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| 650 |
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|a 7OV03QG267
|2 NLM
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| 650 |
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|a Durapatite
|2 NLM
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| 650 |
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7 |
|a 91D9GV0Z28
|2 NLM
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| 700 |
1 |
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|a Wang, Deping
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhou, Jun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yao, Aihua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Huang, Wenhai
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Water environment research : a research publication of the Water Environment Federation
|d 1998
|g 82(2010), 11 vom: 15. Nov., Seite 2279-84
|w (DE-627)NLM098214292
|x 1061-4303
|7 nnns
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| 773 |
1 |
8 |
|g volume:82
|g year:2010
|g number:11
|g day:15
|g month:11
|g pages:2279-84
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