| Titre : | Internal treatment of process waters in paper production by dissolved air flotation with newly developed chemicals. 1. laboratory tests (2009) |
| Auteurs : | Ruben Miranda, Auteur ; Carlos Negro, Auteur ; Angeles Blanco, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 48 N°4, Février 2009) |
| Article en page(s) : | p. 2199–2205 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | Inorganic polyaluminium salts Organic cationic polyelectrolytes Dissolved air flotation Chemical optimization |
| Résumé : | New chemicals, based on the synergistic effect between inorganic polyaluminium salts and organic cationic polyelectrolytes, have been tested for the chemical optimization of a dissolved air flotation (DAF) unit, used as internal treatment of process waters in a paper mill based on 100% recovered paper. Laboratory tests have demonstrated that polyamine modifications of the aluminum salts are the most efficient in the removal of contaminants, the combination of a polyaluminium nitrate sulfate salt and a polyamine being the most efficient. This chemical has been studied under different conditions, such as different dosages or in combination with a flocculant for the treatment of waters from different paper grades production, and the results have demonstrated a good performance at laboratory scale. Therefore, a field trial has been recommended for assessing its potential benefits at mill scale, which will be described in a future paper. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie801047h |
