Miranda Carreño, RubénNegro Álvarez, Carlos ManuelBlanco Suárez, Ángeles2023-06-202023-06-202009American Chemical Society10.1021/ie801826mhttps://hdl.handle.net/20.500.14352/49496“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/ie801826m "New chemicals, based on the synergistic effect between inorganic polyaluminium salts and organic cationic polyelectrolytes, have been tested previously at laboratory-scale, and the most efficient product has been selected for an industrial trial for a dissolved air flotation unit of a paper mill based on 100% recovered paper (part 1 of this work). A polyaluminium nitrate sulfate salt combined with a quaternary polyamine has been evaluated in a long-term industrial trial for assessing its potential benefits. Results indicate that this new chemical is able to improve the removal of contaminants by dissolved air flotation, especially when the contamination load of the waters is high, allowing a further closure of the water circuits.engjournal articlehttp://pubs.acs.org/doi/abs/10.1021/ie801826mopen accessWater treatmentDissolved air flotationNew chemicalsPolyamineAluminium saltsPaper recyclingIngeniería químicaAguaMedio ambienteIndustria del papel3303 Ingeniería y Tecnología Químicas2303.31 Química del Agua2391 Química Ambiental3312.13 Tecnología de la Madera