Enhancing the Economic Feasibility of Biogas Production from Bioethanol Wastewater Derived from Empty Fruit Bunches - Erwan Hermawan; Adiarso Adiarso; Ai Nelly; Danis E. P. Wicaksana; Hari Setiawan; Isyalia D. Handayani; Usman Sudjadi; M. C. Tri Atmodjo; Unik Setiawati (BioEnergy Research, 2025)