Anaerobic co-digestion of linen, sugar beet pulp, and wheat straw with cow manure: effects of mixing ratio and transient change of co-substrate

Abstract This study concerns the improvement and sustainability of producing methane (CH 4 ) from co-digestion cow manure (CM), sugar beet pulp (SBP), linen (Ln), wheat straw (WS). The first step involved co-digesting CM, Ln, WS at various mixing ratios (CM/Ln/WS) in batch reactors to ascertain best gas production. Biochemical potential (BMP) tests were carried out under mesophilic conditions using sludge a wastewater treatment plant as an inoculum. highest CH production (351 mL/g VS add volatile solids removal rate (72.87%) observed ratio 50/25/25 lowest (187 was recorded 25/25/50. A kinetic analysis suggest strategy for based on substrates mix. second SBP, semi-continuous stirred tank reactor influence transient change co-substrate performance. biogas doubled with which may be due SBP being more easily biodegradable than WS.