http://www.cnr.it/ontology/cnr/individuo/prodotto/ID174779
Ammonia removal from aqueous solutions by MgNH4PO4o6H2O precipitation (Articolo in rivista)
- Type
- Label
- Ammonia removal from aqueous solutions by MgNH4PO4o6H2O precipitation (Articolo in rivista) (literal)
- Anno
- 2000-01-01T00:00:00+01:00 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- PACE G (1), A. BERTON (1), A. MANTOVANI (2) (literal)
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- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- 1 Centro di Chimica Metallorganica del CNR e/o Dipartimento di Processi Chimici dell'Ingegneria.
2 Dipartimento di Processi Chimici dell'Ingegneria, Facoltà di Ingegneria, Università di Padova, via Marzolo, 9-35126 Padova (Italy) (literal)
- Titolo
- Ammonia removal from aqueous solutions by MgNH4PO4o6H2O precipitation (literal)
- Abstract
- Ammonia removal from aqueous solutions as magnesium ammonium phosphate, MgNH4PO4-6H2O (struvite, MAP), was investigated and thè parameters, pH and ammonium/magnesium/phosphate molar ratio, for optimization of thè ammonia precipitation were determined. The pH of thè solution containing thè calculated amounts of NH4C1, MgCl2 and NaH2PO4 (initial pH 4-5) was slowly adjusted to thè fixed value (in thè range 8.5-10.5) with thè use of a concentrated NaOH solution. About 3 min. after thè struvite precipitation, thè solid was filtered off on a cellulose filler. By this method, under strictly controlied conditions (pH, N/Mg/P molar ratio and reaction rime), thè NH4+ removal in high yield (up to 99% for concentrations > 1000 mg/L) was performed In most experiments performed thè ammonium ion content in thè filtrate has been reduced to a level lower than 15 mg/L with a single treatment. (literal)
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- Autore CNR
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