Ordóñez Sanz, RuthHermosilla Redondo, María DaphneFuente González, Elena de laBlanco Suárez, María Ángeles2023-06-202023-06-202009Ordóñez, Ruth, et al. «Influence of Water Quality on the Efficiency of Retention Aids Systems for the Paper Industry». Industrial & Engineering Chemistry Research, vol. 48, n.o 23, diciembre de 2009, pp. 10247-52. DOI.org (Crossref), https://doi.org/10.1021/ie9010029.10.1021/ie9010029https://hdl.handle.net/20.500.14352/49494“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/ie9010029"It has been reported that about 10-15% of the fresh water intake in a paper mill is used for feeding and diluting retention aids, so significant savings could be achieved by replacing fresh water with process water. Water from different sources and qualitiessfresh water, the outflow from an internal ultrafiltration placed in the machine circuit of a paper mill, and water from a membrane bioreactor used to treat the final effluent of this paper millswere used to prepare a dual retention system consisting of a cationic polyacrylamide and bentonite. While the behavior of bentonite was not significantly affected by the quality of the water used in its preparation, the efficiency of the cationic polyacrylamide was reduced to about 12% when it was prepared with water with high anionic trash content and conductivity as a result of a partial neutralization of the charged groups. The effect of nonionic chemical oxygen demand on the efficiency of the polymer was negligible.engjournal articlehttps://doi.org/10.1021/ie9010029open accessPaper industryRetention aidsWater qualityFresh water replacementBentonitePolyacrylamideIngeniería químicaAguaMedio ambienteIndustria del papel3303 Ingeniería y Tecnología Químicas2303.31 Química del Agua2391 Química Ambiental3312.13 Tecnología de la Madera