Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Doi
Abstract
The micellar enhanced ultrafiltration of model aqueous solutions containing inorganic nitrogen
and phosphorous compounds was studied. In the experiments, cellulose membranes of 5, 10 and 30 kDa
molecular weight cut-off and cetyltrimethylammonium bromide (CTAB) as a cationic surfactant were
used. The concentration of CTAB amounted to 2 and 3CMC (critical micelle concentration). The influence
of surfactant concentration, membrane cut-off and operating pressure on permeate flux, as
well as on nitrate and phosphate separation was evaluated. The results showed that the presence of
both nitrates and phosphates caused deterioration of the retention coefficient in comparison to separation
efficiency achieved for one-component solutions