Article
Engineering, Environmental
C. M. Ajay, Sooraj Mohan, P. Dinesha
Summary: Anaerobic digestion is a key waste-to-energy technology that uses kitchen waste as a feedstock to produce energy-rich biogas. Portable biodigesters are emerging as an attractive solution for decentralized biogas production, especially in rural and urban areas. Proper design and feeding of kitchen waste into biogas units can effectively utilize wastes for energy production.
Article
Agricultural Engineering
Przemys Law Liczbinski, Sebastian Borowski, Weronika Cieciura-W
Summary: This study demonstrates that kitchen waste can be co-digested with pretreated grass at high loading rates, but the digesters must be operated at thermophilic temperatures. Metagenomic analysis reveals differences in microbial community composition during digestion processes at different temperatures.
BIORESOURCE TECHNOLOGY
(2022)
Article
Thermodynamics
Yi Shi, Jiuping Xu
Summary: This study compares anaerobic co-digestion and separate anaerobic digestion treatments to explore the best resource utilization schemes for kitchen waste and excess sludge. A multi-objective mathematical model is developed to optimize the process, considering technology and policy factors. The results show that anaerobic digestion technology combined with suitable government policy support can significantly improve waste recovery efficiency. AcoD is found to be superior to SAD, and a 1:2 mixing ratio achieves the best biomethane conversion and economic benefits.
Article
Energy & Fuels
C. Veluchamy, Ajay S. Kalamdhad, Brandon H. Gilroyed
Summary: The kinetic study of plug flow reactor digesting corn silage under mesophilic conditions showed that increasing organic loading rate (OLR) led to a decrease in biogas yield and methane content in the biogas. The developed kinetic model can be used to design plug flow reactors for digesting various organic wastes. The maximum biogas yield and first-order reaction rate constant were determined in this study for future reactor design.
Article
Engineering, Environmental
Charbel Abou Khalil, Mohamed T. Eraky, Sophia Ghanimeh
Summary: A novel localized mixing concept was tested in an Anaerobic Plug Flow Reactor treating Food Waste mixed with municipal Wastewater. The results showed that localized mixing reduced energy demand, increased system stability, and improved biogas production efficiency.
Review
Chemistry, Multidisciplinary
Qingchen Meng, Hongbo Liu, Haodong Zhang, Suyun Xu, Eric Lichtfouse, Yunbo Yun
Summary: Around 1.6 billion tons of food are wasted annually, highlighting the need for advanced methods to recycle food waste into energy and materials. Anaerobic digestion of kitchen waste offers a solution by efficiently recovering energy and minimizing carbon emissions. However, factors such as dietary habits and seasonal diet variations can affect digestion stability and biogas production. The recycling of digestate is also a challenge that can be addressed by improving anaerobic digestion reactors.
ENVIRONMENTAL CHEMISTRY LETTERS
(2022)
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
Agricultural Engineering
Yuying Hu, Susu Liu, Xiaofan Wang, Shihao Zhang, Tengfang Hu, Xin Wang, Chuqiao Wang, Jing Wu, Li Xu, Gaoping Xu, Fengping Hu
Summary: High solid anaerobic digestion (AD) is a promising and sustainable technology for treating kitchen waste. This study investigated the effect of alkali pretreatment and bentonite addition treatment (AP/Be) on kitchen waste AD at different total solids (TS) content. The results showed that AP/Be treatment significantly increased methane yield and enriched bacterial microbial diversity. Moreover, the dominant methanogenic pathways changed with different TS content. This study provides new insights into enhancing kitchen waste anaerobic digestion and understanding the microbial mechanism.
BIORESOURCE TECHNOLOGY
(2023)
Review
Biotechnology & Applied Microbiology
Yi-Juan Yan, Xiang Li, Chen-Shun Lu, Takuro Kobayashi, Guang-Yin Zhen, Yong Hu
Summary: Kitchen waste is a suitable substrate for anaerobic digestion, but the difficulties and time-consuming nature of the start-up phase need to be addressed. This study discusses the factors influencing the start-up phase of kitchen waste anaerobic digestion and proposes methods to increase biogas yield. By controlling various parameters and optimizing conditions, the activity of methane-producing bacteria can be enhanced. Additionally, substrate pretreatment and conductive material addition are introduced to accelerate the start-up phase.
FERMENTATION-BASEL
(2023)
Article
Agricultural Engineering
Yu Qin, Jingnan Yang, Yanxin Wu, Dongbo Wang, Xuran Liu, Mingting Du, Dandan He, Neng Yi
Summary: This study found that allyl isothiocyanate (AITC) from cruciferous vegetables can be completely degraded by microorganisms during anaerobic co-digestion, serving as a substrate for methane production. Increasing AITC concentration led to decreased methane production and prolonged digestion time. AITC also induced cell apoptosis by modifying cell membrane properties, inhibiting the anaerobic co-digestion process.
BIORESOURCE TECHNOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Salma Aathika Abdur Rawoof, P. Senthil Kumar, Dai-Viet N. Vo, Sivanesan Subramanian
Summary: This article discusses factors influencing the production of biohydrogen and biomethane, as well as methods to improve efficiency, such as co-digestion, pre-treatment, application of additives, and optimal digester design.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Article
Environmental Sciences
Bei Lu, Chao Jiang, Zheng Chen, Aimin Li, Wen Wang, Shicheng Zhang, Gang Luo
Summary: This study assessed the fate of polylactic acid microplastics (PMP) during co-digestion with kitchen waste (KW). The results showed that anaerobic digestion caused aging and fragmentation of PMP, with the highest degree of aging and fragmentation observed under thermophilic conditions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biotechnology & Applied Microbiology
Mario Esparza-Soto, Sergio Alcaraz-Ibarra, Mercedes Lucero-Chavez, Maria del Carmen Jimenez-Moleon, Miroslava de los Angeles Mier-Quiroga, Cheikh Fall
Summary: This study evaluated the anaerobic co-digestion of waste activated sludge and organic kitchen waste at low temperature and found acceptable methane and energy production. These findings provide a foundation for further research and domestic applications.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Engineering, Environmental
Thamina Nasrin, Chayan Kumer Saha, Rajesh Nandi, Md Sanaul Huda, Md Monjurul Alam
Summary: Kitchen waste can be a major source of renewable energy by producing biogas through anaerobic digestion. Research has shown that the highest methane yield can be obtained at 15% TS content. Analyzing the substrate characteristics after anaerobic digestion revealed that the optimum TS content for kitchen waste is 14.90%.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Chemical
Sang-Yoon Kim, Gui-Seck Bae, Jun-Hyeong Lee, Young-Man Yoon, Chang-Hyun Kim
Summary: This study examines the impact of magnetite on the efficiency of anaerobic digestion in a plug flow reactor using food wastewater as the substrate. The results show that maintaining a concentration of 20 mM magnetite in the reactor effectively promotes direct interspecies electron transfer (DIET), but has minimal effect on the chemical characteristics of the wastewater and methane production.
