5th Edition 2023 Opportunities and challenges of the recollection systems with identification 11 international experiences and 29 specialized companies MIWA Belgium Sveen Peters $ Treviso Italy Paolo Contò $ Pisa Italy Marco Redini $ Schleswig-Holstein Germany Denis Kissel $ 10 basic principles about taxation and waste — Martin Steiner $ The new framework for waste taxes and local funding — Ignasi Puig $ Garante per la protezione dei dati personali Italy Francesca Cecamore $ Monza Italy Serena TrussardiValentina Guelpa $ Privacy by design — Alessandro Mantelero $ Salacea & Bihor Province Romania Pásztai Zoltán AttilaHovárth Béla $ Stockholm Sweden Henrik SiepelmeyerLars-Olov Andersson $ Hertfordshire United Kingdom Helena Jackson $ Netherlands Netherlands Luuk BosAnne Claudia Lanting $ ← 2022