Hollow fibres

The results of an experimental study, developed on a membrane bioreactor/membrane contactor pilot plant, aimed at drinking water denitrification are presented and discussed. In the adopted configuration the water, contaminated by nitrates, flows inside the fibres of a membrane unit. Due to the exist

This work focuses on vacuum membrane distillation (VMD) for seawater desalination. The aim of the work was to compare two hollow fibre module configurations (inside/out and outside/in). Experiments were carried out with pure water and with 15 g/L up to 300 g/L NaCl solutions and for two different ma

Flocculation of yeast cells prior to microfiltration leads to improved permeate flux. A number of commercially available cationic polyacrylamides from Cytec Industries (Stamford, CT, USA) were tested. These flocculants had different molecular weights and charge densities. The optimum flocculant dose

In Tenerife, Canary Islands, a complex infrastructure exists, whose aim is the reuse of wastewater for crop irrigation. For this reason, techniques of advanced treatment, such as micro-ultrafiltration, have been developed. A laboratory-scale study was carried out to evaluate the feasibility of a com