Adsorption of phosphate by various oxides: theoretical treatment of adsorption envelope
An explanation is put forward for the shape of adsorption envelopes found for phosphate adsorption by various metallic oxides. The equation xm= C1(mH3PO4+mEanions) is proposed, where mH3PO4 is the chemical potential of undissociated H3PO4; mEanions is the chemical potential of all phosphate anions considered as one component; C1 is a constant that includes influences of surface charge, chemical affinity of the metal for phosphate, specific surface area, etc., and xm is the calculated Langmuir maximum adsorption of P at each pH. The dependence of C1 on the metal present in the oxide is shown.
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| Main Authors: | , , |
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| Format: | artículo biblioteca |
| Language: | English |
| Published: |
Bioinfo Publications
1977
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| Online Access: | http://hdl.handle.net/10261/60196 |
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| Summary: | An explanation is put forward for the shape of adsorption envelopes found for phosphate adsorption by various metallic oxides. The equation xm= C1(mH3PO4+mEanions) is proposed, where mH3PO4 is the chemical potential of undissociated H3PO4; mEanions is the chemical potential of all phosphate anions considered as one component; C1 is a constant that includes influences of surface charge, chemical affinity of the metal for phosphate, specific surface area, etc., and xm is the calculated Langmuir maximum adsorption of P at each pH. The dependence of C1 on the metal present in the oxide is shown. |
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