The Production of Biochar from Sewage Sludge Pyrolysis and its Use: A Mini Review Abdelaziz Touzani, Yahya El Hammoudani, Khadija Haboubi, Iliass Achoukhi, Mustapha El Boudammoussi, Hatim Faiz, Mohamed Moudou and Fouad Dimane E3S Web Conf., 527 (2024) 01024 Published online: 24 May 2024 DOI: 10.1051/e3sconf/202452701024