Retrofitting Digestate Recirculation System to Improve Methane Yield in Anaerobic Digestion. - Insaani, Elang Nur Reiz M. N.; Dafiqurrohman, Hafif; Surjosatyo, Adi; Priadi, Cindy Rianti; Lokahita, Baskoro (Journal of Word Science (JWS), 2026)