Akademik Veri Yönetim Sistemi
3 rd INTERNATIONAL AQUATIC BIOTECHNOLOGY SYMPOSIUM, İstanbul, Türkiye, 25 - 27 Eylül 2024, ss.16
The concept of circular bioeconomy has recently gained prominence as a crucial component of a sustainable society recently which aims to transform renewable biological resources and their wastes into bio-based products and value-added products such as bioenergy. In line with these objectives, alternative carbon sources and the use of different biomass are being evaluated in the production of energy and value-added products to reduce dependence on fossil resources. Within the scope of biorefinery, the use of third-generation biomass holds significant importance, as it does not compete with food in energy production and can be grown without the need for arable land. In this direction, macrophytes emerge as key raw materials to be integrated into biorefineries. This study aims to assess the efficiency of utilizing aquatic biomass, which is abundant in freshwater ecosystems and investigates various strategies to enhance system performance. The biomethane potentials of different macrophyte were examined using the Automatic Methane Potential Test System (AMPTS) II (Bioprocess Control, Sweden, Lund) and the reactors were operated for 30 days at 37°C with an inoculum/substrate ratio of 2 based on volatile solids (VS). Each reactor configuration was run in triplicates. The biomethane yields of four different macrophytes were calculated on the basis of VS content of each substrate. The digesters operated with Phragmites exhibited the highest methane yield, calculated as 238 mLN CH4gVS-1 followed by Scirpus (226 mLN CH4gVS-1). Subsequently, lower biomethane yields were observed for the submerged macrophytes Ceratophyllum (165 mLN CH4gVS-1 and Potamogeton (193 mLN CH4gVS-1) and the methane production was almost completed within the first 10 days of the operation period. Through the utilization of non-competitive feedstock capable of cultivation in aquatic environments, this study could play a role in advancing the creation of eco-friendly and effective biorefinery systems.