Journal of Energy Bioscience 2025, Vol.16, No.4, 172-181 http://bioscipublisher.com/index.php/jeb 180 In order to better promote the application of sweet potato biogas, several aspects can be taken into consideration. First of all, in terms of planting, those sweet potato varieties with high yield and high sugar content should be promoted first, so that it is easier to increase biogas production. Secondly, rural areas should be encouraged to adopt some new pretreatment methods, such as thermochemical treatment, which can greatly improve fermentation efficiency and methane production. At the same time, the government also needs to introduce some subsidy policies to help farmers and enterprises reduce the initial cost of building biogas digesters, so that projects are easier to implement. In addition, it is also important to incorporate sweet potato biogas into the rural energy system, which can not only improve the utilization rate of agricultural waste, but also enhance the rural energy supply capacity. In the future, efforts can be made in sweet potato breeding, such as cultivating new varieties that are more suitable for gas production and drought-resistant and disease-resistant, so as to fundamentally improve the benefits of energy crops. At the same time, suitable construction models for different regions can be explored, such as a combination of centralized and distributed methods, so that resource allocation is more reasonable. It is also possible to consider fermenting sweet potatoes with other agricultural waste, such as with livestock manure, which can not only increase biogas production, but also increase overall economic benefits. If these measures can be implemented, they will be of great help in promoting rural energy development. Acknowledgments We would like to express our gratitude to the two anonymous peer reviewers for their critical assessment and constructive suggestions on our manuscript. Conflict of Interest Disclosure The authors affirm that this research was conducted without any commercial or financial relationships that could be construed as a potential conflict of interest. References Catherine C., and Twizerimana M., 2022, Biogas production from thermochemically pretreated sweet potato root waste, Heliyon, 8(9): e10376. https://doi.org/10.1016/j.heliyon.2022.e10376 De Paula Batista S., Guerra E., Resende J., Gueri M., Carvalho G., Crestani J., and Silva I., 2019, Potential for biogas generation from sweet potato genotypes, Ambiente e Agua - An Interdisciplinary Journal of Applied Science, 14(2): e2317. https://doi.org/10.4136/AMBI-AGUA.2317 Fang Y., Hossain M., Peng S., Han L., and Yang P., 2024, Sustainable energy development of crop straw in five southern provinces of China: Bioenergy production, land, and water saving potential, Renewable Energy, 224: 120134. https://doi.org/10.1016/j.renene.2024.120134 Fu T., Xu Y., Li M., Xue S., Duan Z., and Xie G., 2022, Bioenergy production potential of 16 energy crops on marginal land in China, BioEnergy Research, 15: 998-1016. https://doi.org/10.1007/s12155-021-10380-3 Hou J., Zhang W., Wang P., Dou Z., Gao L., and Styles D., 2017, Greenhouse gas mitigation of rural household biogas systems in China: a life cycle assessment, Energies, 10: 239. https://doi.org/10.3390/EN10020239 Iqbal N., Sakhani M., Khan A., Ma A., Ajmal Z., and Khan M., 2021, Socioeconomic impacts of domestic biogas plants on rural households to strengthen energy security, Environmental Science and Pollution Research, 28: 27446-27456. https://doi.org/10.1007/s11356-021-12633-2 Li Y., Qing C., Zhou W., and Xu D., 2025, Exploring the role of environmental regulations in biogas development in China, from the perspective of peer effect, Energy, 315: 134393. https://doi.org/10.1016/j.energy.2025.134393 Li Y., Yan B., Qin Y., Shi W., and Yan J., 2021, Analysis of the types of animal husbandry and planting that influence household biogas in rural China, Journal of Cleaner Production, 332: 130025. https://doi.org/10.1016/j.jclepro.2021.130025 Liu Q., 2011, Sweet potato omics and biotechnology in China, Plant Omics, 4: 295-301. Liu T., Ferrari G., Pezzuolo A., Alengebawy A., Jin K., Yang G., Li Q., and Ai P., 2023, Evaluation and analysis of biogas potential from agricultural waste in Hubei Province, China, Agricultural Systems, 205: 103577. https://doi.org/10.1016/j.agsy.2022.103577
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