Characterisation of biochar from various carbon sources Hendrix Yulis Setyawan, Nimas Mayang Sabrina Sunyoto, Yusron Sugiarto, Beauty Sue stining Dyah Dewanti, Vindhya Tri Widayanti, Lukman Hakim, Syahrul Kurniawan, Ga bryna Auliya Nugroho, Devy Ulandari, Annisa’u Choirun et al. (5 more) BIO Web Conf., 90 (2024) 06003 Published online: 05 February 2024 DOI: 10.1051/bioconf/20249006003