RT Journal Article
T1 Comparison of ultrafiltration and dissolved air flotation efficiencies in industrial units during the papermaking process
A1 Monte Lara, María Concepción
A1 Ordóñez Sanz, Ruth
A1 Hermosilla Redondo, María Daphne
A1 González Sánchez, Mónica
A1 Blanco Suárez, María Ángeles
AB The efficiency of an ultrafiltration unit has been studied and compared with a dissolved air flotation system to get water with a suited quality to be reused in the process. The study was done at a paper mill producing light weight coated paper and newsprint paper from 100% recovered paper. Efficiency was analysed by removal of turbidity, cationic demand, total and dissolved chemical oxygen demand, hardness, sulphates and microstickies. Moreover, the performance of the ultrafiltration unit and the membranes were studied deeply, analysing its variability during the filtration process. As expected, the ultrafiltration gave higher removal efficiencies than the dissolved air flotation cell in parameters like turbidity, cationic demand, dissolved chemical oxygen demand and microstickies. The greatest difference in performance between the units concerned cationic demand and dissolved chemical oxygen demand. Ultrafiltration was influenced by the operating time, decreasing the removal efficiency of the dissolved fraction by 75% and of the colloidal fraction by 30% after 312 of running. Membrane autopsy, carried out to identify the cause of poor membrane performance, showed that the active layer was degraded due to the effect of suspended solids.
PB Appita Inc.
SN 1038-6807
YR 2011
FD 2011
LK https://hdl.handle.net/20.500.14352/44321
UL https://hdl.handle.net/20.500.14352/44321
LA eng
NO European Commission
NO Comunidad de Madrid
NO Ministerio de Ciencia e Innovación (España)
DS Docta Complutense
RD 20 ene 2026