Abstract: The present invention relates to an artificial turf comprising fibers having advantageous properties such as a tuned hydrophilicity and the ability to transport water, enabling self-cooling through water evaporation. For this the artificial turf comprises at least one fiber having a core and a shell, characterized in that an outer surface of the shell has a contact angle with water of less than 90°, and that the shell comprises at least one axially oriented groove with a width of less than 500 micrometers.

Abstract: A filtration module is disclosed, comprising at least one hollow capillary filtration membrane, in particular having a retentate side inside the hollow capillary and a permeate side outside the capillary, characterized in that the retentate side of the capillary filtration membrane has at least one dent with an aperture angle ? smaller than 180°. A method to apply a filtration module according to the invention is disclosed characterized in that release of a cake layer formed at the retention side of the membrane is enforced, as well as further disrupture and disintegration of the cake layer, by applying a backwash cycle with a reverse flow at a backwash pressure lower than the maximum trans membrane pressure during a forward filtration step of a process liquid.