Dynamic membrane pre-coated with micro-sized iron oxyhydroxide for arsenic removal: Application study and mathematical modelling

Citation
8th International Congress and Exhibition on Arsenic in the Environment, As2021
Contribution to Conference
8th International Congress and Exhibition on Arsenic in the Environment, As2021
Publisher DOI
10.1201/9781003317395-126
Publisher
CRC Press
ISBN
9781003317395
Arsenic is among the major drinking water contaminants affecting populations in many countries because it causes serious health problems on long-term exposure. In this study, the application of dynamic membranes (DM's) pre-coated with micro-sized fraction of granular ferric hydroxide (µGFH) in microfiltration process is investigated to remove As(V) from contaminated water. DM shows As(V) removal efficiency of 90% in continuous flow experiments at constant water flux. The performance of the DM's obtained depended on the water flux and the amount of µGFH particles deposited. The linear driving force (LDF) model is used to predict the As(V) removal rates and the simulation results show that LDF model could describe the As(V) removal rates correctly. The results of this study exhibit that DM's can be a viable option in removing arsenic for drinking water production.