Akademik Veri Yönetim Sistemi
Waste and Biomass Valorization, 2024 (SCI-Expanded)
This study examined biogas production from cattle manure obtained from Sivas (Türkiye) province under anaerobic conditions. Thermal, acid, base and thermochemical pretreatment methods were applied to cattle manure to increase the biogas production rate. The biogas production rate of cattle manure was found as 150.3 mL/gsolid waste without any pretreatment in the fermentation media. Thermal pretreatments were applied at 25–180 °C for 60 min. The highest biogas production rate was found to be 282.6 mL/gsolid waste at 150 °C. By increasing the temperature to 150 °C, the biogas production rate increased by 88.02% compared to the normal condition. In the next stage of the experimental studies, acidic (15% H2SO4 and 15% HNO3 by mass) and basic (8N KOH and 8N NaOH) pretreatments were applied to the cattle manure. Pretreatments were carried out by adding acid and base at the rates of 5, 10, 20 and 30% of the mass of the solid material in the reactor. The highest biogas production rate was found as 235.7 mL/gsolid waste in the media containing 20% KOH. This value showed a 56.82% increase in biogas production rate compared to the normal condition media. The combined effects of temperature, acid and base on the rate of biogas production were investigated in the last section of the study. The highest biogas production rate was as 320.2 mL/gsolid waste in media containing 20% KOH at 150 °C. This value showed a 113.04% increase in biogas production rate compared to the normal condition media. Graphical abstract: (Figure presented.)