Optimization of key factors affecting hydrogen production from coffee waste using factorial design and metagenomic analysis of the microbial community - Villa Montoya, Alejandra Carolina; Mazareli, Raissa Cristina da Silva; Delforno, Tiago Palladino; Centurion, Victor Borin; Oliveira, Valéria Maia de; Silva, Edson Luiz; Varesche, Maria Bernadete Amancio (International Journal of Hydrogen Energy, 2020)