Article
Engineering, Environmental
Yeney Lauzurique, Fernando G. Fermoso, Nicolas Sanchez, Alejandra Castillo, Ricardo Salazar, Veronica Garcia, Cesar Huilinir
Summary: This study investigated the effect of substrate-inoculum ratio and fly ash concentration on the anaerobic digestion of winery wastewater. The results showed that a substrate-inoculum ratio of 0.50 g soluble COD/g VSS was the most effective. Among the tested fly ash concentrations, adding 100 mg/L improved methane production by 79%, while 150 mg/L inhibited methane production. Additionally, it was found that fly ash had a similar effect to a system with Fe-EDTA, indicating the bioavailability of Fe in the fly ash.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Environmental Sciences
K. Bella, P. Venkateswara Rao
Summary: The study investigated the improvement of anaerobic digestion of cheese whey waste and found that septage is an excellent co-substrate. The highest biogas production was achieved with cattle manure inoculated mixture at 60% whey fraction.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Marie-Noel Mansour, Thomas Lendormi, Lucie Drevillon, Amar Naji, Nicolas Louka, Richard G. Maroun, Zeina Hobaika, Jean-Louis Lanoiselle
Summary: Poultry wastes can be used as substrates for biogas production, but the high protein content leads to ammonia inhibition. Different substrates and inoculum sources affect the biochemical methane potential, and increasing the substrate-to-inoculum ratio decreases the hydrolysis constant. Liger is the most suitable inoculum source. Comparing organic laying hen droppings with slaughterhouse waste, slaughterhouse waste is more important in anaerobic digestion due to its high methane yield, especially from viscera. Methane production is affected by increasing ammonia concentrations.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Harjinder Kaur, Raghava R. Kommalapati
Summary: The study investigated the biochemical methane potential, biodegradability, and kinetic parameters of goat manure at different inoculum to substrate ratios. Results showed that the biomethane yield was similar among all ISRs and significantly higher than the control group. The biodegradability of goat manure was consistent across different ISRs, with 90% of the yield observed within 31 to 32 days.
Review
Green & Sustainable Science & Technology
Xingyao Meng, Qingping Wang, Xixi Zhao, Yafan Cai, Xuguang Ma, Jingyi Fu, Pan Wang, Yongjing Wang, Wei Liu, Lianhai Ren
Summary: Anaerobic digestion is a biotechnology that aligns with greenhouse gas reduction policies and circular economy development goals. The quality and activity of inoculum are crucial in ensuring the successful start-up and stable operation of anaerobic digestion reactors. However, there is a lack of cost-effective, ready-to-use methanogenic culture for anaerobic digestion systems. Various preservation strategies for inoculum, including wet storage, dehydrated storage, and freeze-drying, have been evaluated. Freeze-drying with an effective cryoprotectant may yield the best results for preserving anaerobic inoculum.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Agricultural Engineering
Muhammad Sohail, Alam Khan, Malik Badshah, Allan Degen, Guo Yang, Hu Liu, Jianwei Zhou, Ruijun Long
Summary: This study reveals that yak rumen fluid as an inoculum can enhance the degradability of sheep manure and increase biogas production, with its key component being the abundant hydrolytic bacteria.
BIORESOURCE TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
F. Demichelis, T. Tommasi, F. A. Deorsola, D. Marchisio, D. Fino
Summary: This study evaluated the importance of inoculum in mesophilic anaerobic digestion (AD) and identified the optimal conditions for AD configuration through comparing different inocula, substrate: inoculum ratios, and incubation times.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Abderrahmane Lahbab, Mohammed Djaafri, Slimane Kalloum, Ali Benatiallah, M. R. Atelge, A. E. Atabani
Summary: This study examined the biogas production from vegetable peel and cow dung without external inoculum, with experimental results showing that a CDR of 3:1 resulted in optimal methane production. A new mathematical model based on CDR and VS accurately predicted methane production and was validated against experimental results.
Article
Multidisciplinary Sciences
Md Shahadat Hossain, Tahmid ul Karim, Mahade Hassan Onik, Deepak Kumar, Md Anisur Rahman, Abu Yousuf, Mohammad Rakib Uddin
Summary: This study aims to generate methane-enriched biogas from unsorted organic municipal solid waste (MSW) using dry anaerobic digestion (DAD). By adjusting various process parameters, it was found that the highest biogas yield could be achieved at 37 degrees C, with a mixed inoculation mode (AS:CM-1:2) and a multilayer inoculum flow pattern.
SCIENTIFIC REPORTS
(2022)
Article
Energy & Fuels
Georgeio Semaan, M. R. Atelge, Roent Dune Cayetano, Gopalakrishnan Kumar, Roald Kommedal
Summary: This study evaluates the conditions for assessing the biochemical methane potential of spent coffee grounds as a substrate, and finds that a substrate-to-inoculum ratio of 2 is not suitable for bio-CH4 production. Pretreatment with dilute acid and thermal has the potential to increase bio-CH4 yield, with significant effects observed for pretreatment time, acid concentration, and liquid-to-solid ratio. Fourier-transform infrared spectroscopy shows that major functional groups are still present in the coffee grounds after pretreatment.
Article
Agricultural Engineering
Yihang Xiao, Feixiang Zan, Weilan Zhang, Tianwei Hao
Summary: This study explored the feasibility and mechanism of adjusting the inoculum-to-substrate ratio (ISR) to improve the methane production from food waste (FW) with a low carbon/nitrogen (C/N) ratio. The results showed that the maximum methane yield was achieved at a C/N ratio of 11 and an ISR of 10:3. Increasing the ISR promoted methane production by enhancing acetoclastic methanogenesis and the hydrolysis of carbohydrates and proteins.
BIORESOURCE TECHNOLOGY
(2022)
Article
Energy & Fuels
Katarzyna Bulkowska, Wioleta Mikucka, Tomasz Pokoj
Summary: This study investigated the effect of glycerine phase on the anaerobic digestion of cattle manure under mesophilic conditions. It was found that the addition of 10% glycerine phase significantly increased biogas production and methane content. Biogas formation was strongly correlated with the concentrations of ammonium nitrogen and volatile fatty acids, and the biogas production decreased over time.
Article
Environmental Sciences
J. Juanga-Labayen, K. Yanac, Q. Yuan
Summary: This study evaluated the impact of different SIR values on the batch anaerobic digestion of cotton textile waste, and found that treated substrate showed higher methane yield and anaerobic degradability compared to untreated substrate. The Gompertz model fitted well with the experimental data, with an R2 value of 0.96-0.99, showing improvement over the first-order kinetic model.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Agricultural Engineering
Sesethu G. Njokweni, Paul J. Weimer, Marelize Botes, Willem H. van Zyl
Summary: Preservation of rumen fluid using glycerol and DMSO showed that DMSO was more effective and preserved properties more similar to fresh rumen fluid. This indicates that DMSO is a more promising alternative for preserving rumen fluid.
BIORESOURCE TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Yingjin Song, Yihang Li, Guanyi Chen, Beibei Yan, Jinlei Li, Hongji Li, Ruiyi Li, Yuxin Wang, Yingxiu Zhang
Summary: The research found that in plateau areas, using temperature change mode for AD treatment of Tibetan food waste can achieve methane yields equivalent to or slightly higher than fixed 35 degrees Celsius treatment. Temperature fluctuations have a minor impact on methane production performance, and at 15 degrees Celsius, the digestion pathway shifts from acetoclastic to hydrogenotrophic.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Engineering, Chemical
Alastair James Ward, Lu Feng, Veronica Moset, Henrik Bjarne Moller
CHEMICAL ENGINEERING & TECHNOLOGY
(2018)
Article
Environmental Sciences
Veronica Moset, R. Wahid, A. Ward, H. B. Moller
ENVIRONMENTAL TECHNOLOGY
(2019)
Article
Green & Sustainable Science & Technology
Veronica Moset, Cristiane de Almeida Neves Xavier, Lu Feng, Radziah Wahid, Henrik Bjarne Moller
JOURNAL OF CLEANER PRODUCTION
(2018)
Article
Green & Sustainable Science & Technology
Md. Anisur Rahman, Henrik Bjarne Moller, Chayan Kumer Saha, Md. Monjurul Alam, Radziah Wahid, Lu Feng
Article
Engineering, Environmental
Michael Bjerg-Nielsen, Alastair James Ward, Henrik Bjarne Moller, Lars Ditlev Merck Ottosen
Article
Agricultural Engineering
Wen-Feng Cong, Veronica Moset, Lu Feng, Henrik Bjarne Moller, Jurgen Eriksen
BIOMASS & BIOENERGY
(2018)
Article
Agricultural Engineering
Lu Feng, Alastair J. Ward, Pau Grima Guixe, Veronica Moset, Henrik B. Moller
BIOSYSTEMS ENGINEERING
(2018)
Article
Environmental Sciences
Lu Feng, Alastair James Ward, Veronica Moset, Henrik Bjarne Moller
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2018)
Article
Green & Sustainable Science & Technology
Lu Feng, Erik Flojgaard Kristensen, Veronica Moset, Alastair James Ward, Henrik Bjarne Moller
ENERGY FOR SUSTAINABLE DEVELOPMENT
(2018)
Article
Energy & Fuels
Md. Anisur Rahman, Henrik B. Moller, Md. Monjurul Alam
BIOMASS CONVERSION AND BIOREFINERY
(2018)
Article
Green & Sustainable Science & Technology
V. Moset, S. Hille, G. H. Rubaek, H. B. Moller, R. Wahid, A. Baattrup-Pedersen
JOURNAL OF CLEANER PRODUCTION
(2019)
Article
Agricultural Engineering
G. Grasa, I. Martinez, R. Murillo
Summary: Gasification kinetics of six chars from residual origin were studied under relatively low temperature, low CO2, and high H2O partial pressures. The Random Pore Model (RPM) showed the best fit to experimental results, but the selection of the reaction model depended on the ash composition, specifically the presence of alkali and alkaline earth metals. Chars with ash content higher than 30% wt. were modeled with the RPM model, while chars with the highest K/Si ratio required modified versions of the RPM to accurately predict reaction rates. Textural properties played a key role in determining reaction parameters, such as the pre-exponential factor and activation energy, for chars with similar ash content and composition.
BIOMASS & BIOENERGY
(2024)
Review
Agricultural Engineering
V. Godvin Sharmila, Surya Prakash Shanmugavel, J. Rajesh Banu
Summary: Proper treatment and disposal of biomass waste is crucial to prevent environmental deposition and its negative impacts. Biofuel has emerged as a potential alternative to fossil fuels, reducing carbon emissions and meeting global energy demands. This review examines different biomass waste conversion techniques and explores the production of biofuels with zero carbon emissions. Research on anaerobic treatment, metabolic engineering, and artificial intelligence has been conducted to enhance biofuel production efficiency.
BIOMASS & BIOENERGY
(2024)
Review
Agricultural Engineering
Selvakumar Periyasamy, Adane Asefa Adego, P. Senthil Kumar, G. G. Desta, T. Zelalem, V. Karthik, J. Beula Isabel, Mani Jayakumar, Venkatesa Prabhu Sundramurthy, Gayathri Rangasamy
Summary: Valorizing agricultural waste into valuable products is crucial for environmental protection and bioeconomy advancement. Preprocessing of agricultural waste is a critical step to convert free carbohydrate molecules for final conversion, and factors such as biomass nature, feed loading, pH, temperature, and time influence the process. This review provides comprehensive information on agricultural waste availability, preprocessing techniques, and factors influencing performance.
BIOMASS & BIOENERGY
(2024)
Article
Agricultural Engineering
Aqueel Ahmad, Ashok Kumar Yadav, Achhaibar Singh, Dinesh Kumar Singh
Summary: The study focuses on predicting and optimizing the yield of biogas production in an anaerobic digester using co-digestion. Experimental data was used to develop a machine learning-based prognostic model, and the Response Surface Methodology (RSM) was employed to optimize the parameters. The results demonstrate that RSM coupled with machine learning is an effective technique for modeling, predicting, and optimizing biogas production yield.
BIOMASS & BIOENERGY
(2024)
Article
Agricultural Engineering
Yijing Zhong, Wenxiang Zhai, Xinli Wei
Summary: This paper studies the thermal stability and decomposition of cork materials with and without silica aerogel filler. The results show that the decomposition is inhibited and the pyrolysis is significantly reduced with the addition of silica aerogel. This finding suggests that silica aerogel-infused cork may be a promising raw material for biofuel production with reduced environmental pollution.
BIOMASS & BIOENERGY
(2024)