Efficiency of prefabricated biodigesters in the treatment of domestic wastewater in dispersed rural localitiesEdgar F. Leon-Huallpa, Roberto Alfaro-Alejo, Edilberto Huaquisto-Ramos, Melania M. Zapana, Willy Huanacuni-Mamani and Germán Belizario-QuispeE3S Web of Conf., 405 (2023) 04035DOI: https://doi.org/10.1051/e3sconf/202340504035