Article
Agricultural Engineering
Fangyi Tang, Jun Tian, Nengwu Zhu, Yunqin Lin, Haomin Zheng, Zhiyong Xu, Weizhen Liu
Summary: This study investigates the influence of the mixing ratio of ammoniated straw to biogas residue on the stability and methane yield of dry anaerobic digestion and analyzes the structure of the microbial community over time. The results show that the reactor with a ratio of 3:3 yielded the highest methane production, with bacteria being the dominant species. Methanosarcina and acid-tolerant Methanobacterium played important roles in anaerobic digestion and methane production.
BIORESOURCE TECHNOLOGY
(2022)
Review
Environmental Sciences
Sagarika Mothe, Venkateswara Rao Polisetty
Summary: This paper discusses the environmental and health hazards caused by burning rice straw waste, and proposes anaerobic digestion into biomethane gas and digestate as an effective technology. Co-digestion of rice straw with nitrogen-rich substrates is proven to balance the carbon to nitrogen ratio and increase biomethane yield.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
F. Granzotto, C. Aita, D. D. Silveira, F. D. Mayer, S. B. Pujol, J. A. Pinas, R. Hoffmann
Summary: Anaerobic digestion proved to be an efficient method for treating organic wastes from university restaurants, achieving high removal rates of pollutants and producing biogas and digestate for potential use as organic fertilizer.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Agricultural Engineering
Wanli Zhang, Xue Wang, Wanli Xing, Rundong Li, Tianhua Yang, Nan Yao, Dan Lv
Summary: The study found that co-digestion of food waste with cattle manure is more likely to achieve synergy compared to other combinations, which is achieved through coupling effects such as improving nutrient balance and dilution of toxic compounds. In the process of co-digestion, specific microbial communities can accelerate detoxification and system recovery through co-metabolism.
BIORESOURCE TECHNOLOGY
(2021)
Review
Agricultural Engineering
Santhana Raj Deena, A. S. Vickram, S. Manikandan, R. Subbaiya, N. Karmegam, Balasubramani Ravindran, Soon Woong Chang, Mukesh Kumar Awasthi
Summary: Biogas generation through anaerobic co-digestion of food waste and activated sludge is an excellent solution to address global challenges and meet increasing energy demands, while also providing a cleaner alternative for pollution and wastewater treatment. However, the efficiency and stability of this technology are hindered by irregularities in the substrate. Adjusting process parameters, optimizing substrate composition, and adding biochar as an additive can enhance the efficiency and outcome of the system.
BIORESOURCE TECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Minrui Liu, Zhengning Li, Xing-e Qi, Zhengjun Chen, Hongyuhang Ni, Yuan Gao, Xia Liu
Summary: In this study, biochar was produced from potato, rape, and wheat straw at 600 degrees C, and then added to a batch anaerobic digestion (AD) system to improve biogas yield. The results showed that the three straw biochars increased cumulative methane production compared with the control group. Potato straw biochar presented the highest cumulative methane production. Significant differences in microbial communities between biochar and control groups were noticed, and the microbial community structure in the AD system was significantly related to the biochar properties. The addition of biochar increased the abundance of Methanobrevibacter in the biochar group.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Review
Environmental Sciences
Chenxi Jin, Shiqiang Sun, Dianhai Yang, Weijie Sheng, Yadong Ma, Wenzhi He, Guangming Li
Summary: With the implementation of zero-waste city and waste classification in China, there is an urgent need for advanced food waste treatment technology. Anaerobic digestion (AD) technology has attracted much attention in China due to its advantages including clean energy production, low carbon emissions, and suitability for large-scale treatment. Chinese policies are conducive to the development and promotion of AD technology for food waste treatment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Agricultural Engineering
Ebba Perman, Anna Schnurer, Annika Bjorn, Jan Moestedt
Summary: Optimization of the biogas generation process is crucial for improving degradation and methane yield. In this study, serial digester systems were found to increase methane yield and protein degradation, while reducing the inhibitory effect of high ammonia levels on methane production.
BIOMASS & BIOENERGY
(2022)
Article
Engineering, Environmental
Endashaw Workie, Vinor Kumar, Amit Bhatnagar, Yiliang He, Yanjun Dai, Yen Wah Tong, Yinghong Peng, Jingxin Zhang, Cunbin Fu
Summary: With the increasing global food waste, the potential for bioenergy production is being explored. This paper reviews the research progress, gaps, and prospects in the process of methane production from food waste. Anaerobic digestion has shown high efficiency in converting food waste to methane. The review also highlights the importance of evaluating weather variations and microphysical properties of the food waste for efficient valorization.
Article
Thermodynamics
Benyi Xiao, Xinyi Tang, Wenzhe Zhang, Ke Zhang, Tang Yang, Yunping Han, Junxin Liu
Summary: Increasing the rice straw ratio reduced biogas and methane production, and affected the characteristics of the digestate. The impact of the rice straw ratio on methane production was slightly different between mesophilic and thermophilic Co-ADs.
Article
Engineering, Environmental
Anchaleeporn Seesatat, Surachai Rattanasuk, Kanin Bunnakit, Pisit Maneechot, Preecha Sriprapakhan, Ritchard Artkla
Summary: The study focused on converting rice straw into biogas for energy production by employing thermophilic lignocellulolytic bacteria. Isolates with high cellulolytic and ligninolytic activities were used to degrade rice straw, resulting in significant biogas and methane yields. The optimal degradation period of 15 days led to efficient and economical biomethane production from rice straw.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Marina Tomasini, Mariana De Oliveira Faber, Viridiana Santana Ferreira-Leitao
Summary: Sugarcane straw is not effectively utilized in the industry currently, but sugarcane straw hemicellulose hydrolyzate (HH) shows promise as a raw material for H2 and CH4 production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Huaping Xiao, Dongqing Zhang, Zhihua Tang, Kai Li, Huafang Guo, Xiaojun Niu, Linzi Yi
Summary: This study evaluated the environmental and economic impacts of different scenarios for food waste and biogas digestate management in Shenzhen, China. The results showed that dry AD coupled with biogas digestate incineration had the best net environmental benefits, reducing 195 kg CO2 per ton of FW, and was the most economically feasible option. Dry AD scenarios exhibited better environmental benefits compared to wet AD, especially in terms of global warming, human toxicity, marine aquatic ecotoxicity, and photochemical ozone creation potential. Incineration was found to be the best post treatment option for biogas digestate.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Swakshar Saha, Abid Hussain, Jangho Lee, Eunseok Lee, Hyung-Sool Lee
Summary: This study developed an integrated LBR-AnMBR system for efficient stabilization and biogas recovery from food waste at room temperatures. The system achieved high hydrolysis and acidification yields through the optimized leachate recirculation rate. The solubilized food waste was further stabilized in the AnMBR, resulting in high COD removal and methane yields. The system also produced high-quality permeates containing valuable nutrients for reuse.
Article
Energy & Fuels
Debnath Ovi, Soon Woong Chang, Jonathan W. C. Wong, Davidraj Johnravindar, Sunita Varjani, jae Hoon Jeung, Woo jin Chung, Anand Thirupathi, Balasubramani Ravindran
Summary: This study found that the addition of an appropriate amount of rice husk biochar (RHB550) can improve the anaerobic digestion process of food waste and increase methane production. However, excessive amounts of biochar can inhibit the digestion process. Adding RHB550 biochar can enhance the stability and methane yield. Increasing its concentration can further improve the organic loading rate in anaerobic digestion.