Miranda Carreño, RubénNegro Álvarez, Carlos ManuelBlanco Suárez, María Ángeles2023-06-202023-06-202009Miranda, Ruben, et al. «Internal Treatment of Process Waters in Paper Production by Dissolved Air Flotation with Newly Developed Chemicals. 1. Laboratory Tests». Industrial & Engineering Chemistry Research, vol. 48, n.o 4, febrero de 2009, pp. 2199-205. DOI.org (Crossref), https://doi.org/10.1021/ie801047h.0888-588510.1021/ie801047hhttps://hdl.handle.net/20.500.14352/49495“This document is the Accepted Manuscript version of a Published Work that appeared in final form in Industrial & Engineering Chemistry Research, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/ie801047h"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.engjournal articlehttps://doi.org/10.1021/ie801047hopen accessNew chemicalsDissolved air flotationPaper recyclingWater treatmentPolyamineAluminium saltsIngeniería químicaAguaMedio ambienteIndustria del papel3303 Ingeniería y Tecnología Químicas2303.31 Química del Agua2391 Química Ambiental3312.13 Tecnología de la Madera