Enhanced Methane Production from Anaerobic Co-Digestion of Wheat Straw Rice Straw and Sugarcane Bagasse: A Kinetic Analysis

Future energy and environmental issues are the major driving force towards increased global utilization of biomass, especially in developing countries like Pakistan. Lignocellulosic residues abundant The present study investigated best-mixed proportion mechanically pretreated lignocellulosic i.e., wheat straw rice (WSRS), bagasse (BAWS), bagasse, (BARS), straw, (BAWSRS) through anaerobic co-digestion. Anaerobic batch mode bioreactors comprising proportions control were run parallel at mesophilic temperature (35 °C) for substrate to inoculum (S/I) ratio 1.5 2.5. Maximum stable biomethane production was observed 1.5, highest yield 339.0089123 NmLCH4/gVS achieved by co-digestion (WSRS) lowest 15.74 from (BARS) 2.5 substrates ratio. Furthermore, reactor performance determined using bio-kinetic parameters rate (Rm), lag phase (λ), coefficient determination (R2). evaluated kinetic models; first-order kinetics, Logistic function model, Modified Gompertz Model, Transference model. Among all models, model provided best fit with experimental data followed Model. suggests that a decrease methane due lower hydrolysis higher lignin content co-digested substrates, mechanical pretreatment leads breakage complex structure. organic matter degradation evidence will be utilized biogas digesters developed rural areas Pakistan, where these agricultural ample waste need technological solution manage produce renewable energy.