Kumar Kadimpati Kishore, Cema Grzegorz, Ziembińska-Buczyńska Aleksandra, Hassan Gamal Kamel, Hellal Mohamed Saad, Surmacz-Górska Joanna
Department of Environmental Biotechnology, Faculty of Energy and Environmental Engineering, Silesian University of Technology, Akademicka Str. 2, 44-100, Gliwice, Poland.
Water Pollution Research Department, National Research Centre, 33 El Bohooth St., Dokki, Giza, Cairo, 12622, Egypt.
Environ Sci Pollut Res Int. 2025 Jan 2. doi: 10.1007/s11356-024-35864-5.
Various novel technologies are currently under development aimed at improving bio-methane output to tackle challenges related to process stability, biogas production, and methane quality in the anaerobic digestion (AD) process. The management of substrate type, temperature, pH, hydraulic retention time (HRT), organic loading rate (OLR), and inoculum origin is essential for ensuring process effectiveness, minimizing inhibition, and maximizing production of biogas and methane yield. The review emphasizes sustainability, focusing on the environmental and economic benefits of anaerobic digestion, including the reduction of greenhouse gas (GHG) emissions, the minimization of landfill waste, and the provision of renewable energy sources. The range of process of variables such as carbon-nitrogen (C:N) ratio (13.6-32.5), temperature (30-56 °C), pH (6-8.5), HRT (3-30 days), and OLR (1-10 g VS m day) were discussed. The review examined recent technologies and innovative methods that improve the productivity of anaerobic digestion, increase biogas output, and advance process management. Several obstacles remain to be addressed, including substrate availability and quality, management of process parameters, and the handling of digestate for sustainable bio-methane production. The final section of the review emphasizes the necessity to optimize process parameters, ensure sustainability, address existing issues, and initiate further research to improve the performance of the AD process for a more sustainable and circular economy. Anaerobic digestion has the potential to significantly contribute to climate change mitigation, waste elimination, and the provision of a sustainable energy source for the future.
目前正在开发各种新型技术，旨在提高生物甲烷产量，以应对厌氧消化（AD）过程中与工艺稳定性、沼气生产和甲烷质量相关的挑战。底物类型、温度、pH值、水力停留时间（HRT）、有机负荷率（OLR）和接种物来源的管理对于确保工艺有效性、最小化抑制作用以及最大化沼气产量和甲烷产率至关重要。该综述强调可持续性，重点关注厌氧消化的环境和经济效益，包括减少温室气体（GHG）排放、最小化垃圾填埋废物以及提供可再生能源。讨论了一系列工艺变量，如碳氮（C:N）比（13.6 - 32.5）、温度（30 - 56°C）、pH值（6 - 8.5）、HRT（3 - 30天）和OLR（1 - 10 g VS m day）。该综述研究了提高厌氧消化生产率、增加沼气产量和推进工艺管理的最新技术和创新方法。仍有几个障碍有待解决，包括底物的可用性和质量、工艺参数的管理以及可持续生物甲烷生产中沼渣的处理。综述的最后一部分强调了优化工艺参数、确保可持续性、解决现有问题以及开展进一步研究以提高AD工艺性能以实现更可持续的循环经济的必要性。厌氧消化有潜力为缓解气候变化、消除废物以及为未来提供可持续能源做出重大贡献。
