Senior consultant, researcher and coordinator of projects on waste and the economy and environment at ENT medi ambient i gestió. PhD in Environmental Science (green economy) from the UAB. Expert in material flow accounting and circular economy indicators at regional level. Sergio also works in the areas in waste management and, in particular, in analysing packaging flows, DRS and extended producer responsibility, along with monitoring and assessing waste regulatory targets. He also addresses environmental taxation issues related to establishing and assessing scrap rates, taxes on landfill and incineration, taxes on extraction, green VAT and economic instruments for the circular economy.