کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
643647 | 884382 | 2009 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Simulation of surfactant contribution to ink removal selectivity in flotation deinking lines Simulation of surfactant contribution to ink removal selectivity in flotation deinking lines](/preview/png/643647.png)
Transport coefficients and correlations recently used to describe surfactant contribution to particle and water transport in a laboratory flotation column were used to simulate the impact of surfactant contamination on the flotation selectivity of industrial two-stage deinking lines. Simulation results showed that surfactants are slightly removed in the first flotation stage and are concentrated in the second one, where they induce a drop in ink flotation and in fibre entrainment. Subsequently, flotation units in the second stage displayed lower ink removal than in the first stage. In the presence of a constant water reject flow, the increase in surfactant contamination in the pulp stock gave a general decrease in the removal of suspended solids. Surfactant removal increased from 5 to 50%, however, this increase was not sufficient to prevent surfactant accumulation in the deinking line. Simulation results were compared with data collected in an industrial deinking line and particle/surfactant removal efficiencies obtained with low surfactant contamination were in line with experimental data.
Journal: Separation and Purification Technology - Volume 64, Issue 3, 12 January 2009, Pages 357–367