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231223s2005 xx ||||| 00| ||eng c |
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|a (NLM)16142956
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Krohn, John E
|e verfasserin
|4 aut
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|a Amino acid adsorption on zeolite beta
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| 264 |
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|c 2005
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| 336 |
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|a Text
|b txt
|2 rdacontent
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| 337 |
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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| 338 |
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|a Band
|b nc
|2 rdacarrier
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| 500 |
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|a Date Completed 28.03.2007
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a A thermodynamic equilibrium model has been developed to describe amino acid adsorption on microporous materials. The model addresses electrostatic, hydrophobic and steric interactions. A procedure for fitting the model's parameters is presented and should be applicable to the majority of the common 20 amino acids. The approach is demonstrated using experimental measurements of L-phenylalanine and L-arginine on zeolite beta. Between the adsorption mechanisms of ion exchange and physisorption, the first can contribute as much as two-thirds of the phenylalanine adsorbed at saturation. For the materials tested, ion exchange is maximized when the zeolite's silicon-to-aluminum ratio is 12. When this atom ratio is raised to 100, ion exchange no longer plays a significant role, but the amount physisorbed increases by 30%
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| 650 |
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|a Journal Article
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7 |
|a Zeolites
|2 NLM
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|a 1318-02-1
|2 NLM
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| 650 |
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|a Phenylalanine
|2 NLM
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| 650 |
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|a 47E5O17Y3R
|2 NLM
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| 650 |
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|a Arginine
|2 NLM
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| 650 |
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7 |
|a 94ZLA3W45F
|2 NLM
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| 700 |
1 |
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|a Tsapatsis, Michael
|e verfasserin
|4 aut
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| 773 |
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8 |
|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 21(2005), 19 vom: 13. Sept., Seite 8743-50
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|g volume:21
|g year:2005
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|g month:09
|g pages:8743-50
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