RT Journal Article T1 Separation of Contaminants from Deinking Process Water by Dissolved Air Flotation: Effect of Flocculant Charge Density A1 Miranda Carreño, Rubén A1 Blanco Suárez, Ángeles A1 Fuente González, Elena de la A1 Negro Álvarez, Carlos Manuel AB The effect of charge density of 5 cationic polyacrylamides (C-PAMs)and 3 anionic polyacrylamides (A-PAMs) in single and in dual treatments with a coagulant on the flocculation and removal of dissolved and colloidal material by dissolved air flotation (DAF) in papermaking has been studied. In single systems, good results were achieved both with low and high charge C-PAMs(1.0and 3.0–3.5 meq/g). In dual sy tems, high charge C-PAMs (3.0–3.5 meq/g)and A-PAMs (1.5 meq/g), were the most efficient. Results show that monitoring flocculation by a focused beam reflectance measurement (FBRM) allows paermakers to optimize the chemical dosages to maximize the separation efficiency of DAF units either with single or dual systems, which is not always possible with traditional methods as charge titration. PB Taylor & Francis SN 0149-6395 print, 1520-5754 online YR 2008 FD 2008 LK https://hdl.handle.net/20.500.14352/49497 UL https://hdl.handle.net/20.500.14352/49497 LA spa NO The original publication is available at http://www.tandf.co.uk/journals/default.asp NO Comunidad de Madrid NO Unión Europea DS Docta Complutense RD 2 may 2024