Dr. Alvaro Soriano Portilla developed a reserach internship in the Department of Chemistry and Bioscience, Section of Chemical Engineering, Aalborg University (Esbjerg, Denmark), from February 29 to March 13, 2020. During this period, Álvaro was working on the evaluation of the forward osmosis technology at pilot-plant scale for the treatment of per- and polyfluoroalkyl substances in water, under the supervision of Jens Muff.