Optimization of biogas production from coffee production waste

•The ligno-cellulosic materials in coffee wastes inhibits the biogas production.•NaOH permits the hydrolysis of coffee wastes and a high biogas production.•A scaled-up of the basic pretreatment in continuous mode was realized.•The continuous test reached a good yield of the process: 82%.•The daily b...

Ausführliche Beschreibung