Xavier Lachapelle Trouillard has won the prize for best poster at the 16th edition of Polytechnique Montréal’s Research Day on 2 June. His poster title was “Critères de dimensionnement et d’opération d’un procédé de traitement des eaux usées municipales par plantation de saules à croissance rapide”. Xavier is a M.Sc. student at Polytechnique, under the supervision of Yves Comeau (Poly) and Michel Labrecque (IRBV). Congratulations Xavier!