Article
Energy & Fuels
M. B. Muhammad, R. Chandra, H. Payal
Summary: This paper investigates the integration of neem leaf litter into cattle dung-based biogas plants. The introduction of neem leaf litter increased daily biogas production, specific methane yield, and electrical energy production while reducing CO2 emissions. However, the energy required for pulverizing the neem leaf litter decreased the net increase in electrical energy. The study highlights the potential benefits of incorporating neem leaf litter into biogas production systems.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
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
Energy & Fuels
N. Papastefanakis, I. N. Daliakopoulos, A. E. Maragkaki, C. Tsompanidis, N. Zotos, D. F. Lekkase, T. Manios, M. S. Fountoulakis
Summary: The effect of solar-dried food waste and a mixture of food waste with olive mill wastewater on the anaerobic digestion of liquid pig manure and cow manure was examined for the first time. The addition of solar dried feedstocks increased the biogas production by 1.7 times. The estimated biodegradability of the mixtures was over 50%, while the volatile solids removal was 23% for maximum biogas production.
Article
Agricultural Engineering
Zahra Al Hasani, Jagdeep Kumar Nayak, Halima Alhimali, Abdullah Al-Mamun
Summary: The study found that the use of conductive additive GAC/nZVI in anaerobic digestion process can significantly increase the biogas production and methane generation, as well as improve the removal rate of COD.
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
Anna Lymperatou, Thor K. Engelsen, Ioannis V. Skiadas, Hariklia N. Gavala
Summary: Lignocellulosic biomass is a crucial resource for expanding biogas production, and research on pretreatment technologies to enhance biomass conversion is a rapidly growing field. This study analyzed seven different types of lignocellulosic biomass and identified key characteristics for effective pretreatment. A simple ammonia pretreatment was used as a case study and partial least squares regression was employed to model the methane yield and efficiency of the pretreatment. The results showed that lipid, ash, protein, and hemicellulose/lignin content were the most decisive factors in predicting pretreatment efficiency.
Article
Biotechnology & Applied Microbiology
Ali Mahmoud, Mohamed Sherif Zaghloul, Rania Ahmed Hamza, Elsayed Elbeshbishy
Summary: Solid waste is a major contributor to greenhouse gases, and the carbon footprint of landfills significantly contributes to global warming. Therefore, it is crucial to explore more environmentally friendly approaches for solid waste management and safe disposal. The digestion of solid waste is a biological process that breaks down organic content, stabilizes waste, and allows the recovery of valuable resources.
FERMENTATION-BASEL
(2023)
Article
Thermodynamics
Kavosh Karami, Keikhosro Karimi, Safoora Mirmohamadsadeghi, Rajeev Kumar
Summary: This study investigated the effects of biological pretreatment on biogas production from lignocellulosic biomass and studied the combination effect with other pretreatment methods. The results showed that aerobic digestion was the only pretreatment method that could individually improve methane yield from pinewood, but combining aerobic digestion with mild thermochemical pretreatment could achieve even higher methane yield.
Article
Environmental Sciences
Yeqing Li, Shasha Yu, Xingru Yang, Yijing Feng, Liming Dong, Yi Zhang, Lu Feng, Mahmoud Mazarji, Junting Pan
Summary: This study investigated the structural differences of humic acids (HAs) derived from different feedstocks and their effects on anaerobic digestion (AD). The study found that HAs with higher carboxyl and phenolic hydroxyl groups showed greater inhibition effect on AD. Different feedstock-derived HAs exhibited variations in aromaticity and humification degree, confirming the influence of HA structures on AD.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Environmental Sciences
Hamed Kazemi Shariat Panahi, Mona Dehhaghi, Gilles J. Guillemin, Vijai Kumar Gupta, Su Shiung Lam, Mortaza Aghbashlo, Meisam Tabatabaei
Summary: Anaerobic fungi have great potential in the biofuel and biogas industries for their ability to degrade lignocellulose. However, the engineering tools for anaerobic fungi have not been established yet. Pre-treatment of lignocellulose by anaerobic fungi can prevent carbohydrate loss and increase biogas production. Bioaugmentation with anaerobic fungi can significantly enhance methane biosynthesis. Nonetheless, novel genetic engineering techniques and tools are needed for the commercial anaerobic digestion process.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Jiaxin Chen, Ji Li, Bin Ye, Xiaolei Zhang, R. D. Tyagi, Xinlei Gao
Summary: Management of chicken manure in Morocco has become a focus due to the increasing demand for chicken and eggs. The bioconversion of chicken manure into biogas can reduce the amount of manure while generating clean energy. Comparing with co-firing, pyrolysis, and gasification, anaerobic digestion of chicken manure was found to be superior in terms of energy gain.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Green & Sustainable Science & Technology
Samson Nnaemeka Ugwu, Kevin Harding, Christopher Chintua Enweremadu
Summary: This study conducted a comparative assessment of the potential environmental impacts of biogas production from enhanced anaerobic digestion using different enhancement options for agro-industrial wastes. The results revealed that the combined enhancement option (co-digestion + PPy/Fe3O4 NPs) had the least global warming potential.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Agricultural Engineering
Amith Abraham, Hyojung Park, Okkyoung Choi, Byoung-In Sang
Summary: The world of bioplastics has rapidly expanded, generating new waste streams that pose challenges to waste processing; anaerobic co-digestion is considered the best option for efficient bioplastic waste processing with reduced space requirements and environmental pollution; the higher C/N ratio of bioplastics presents a challenge to anaerobic digestion, but co-digestion with lower C/N ratio biowastes can improve biogas production.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Shilan Elyasi, Narges Fallah, Babak Bonakdarpour, Amir Mahboubi, Mohammad J. Taherzadeh
Summary: The study demonstrated the efficient anaerobic removal of styrene from wastewater at 35 degrees C with ethanol as co-substrate and co-solvent, leading to a high methane yield. However, at high styrene concentrations, methane production and microbial products sharply decreased.
BIORESOURCE TECHNOLOGY
(2021)
Article
Energy & Fuels
C. N. Kowthaman, V. Arul Mozhi Selvan, P. Senthil Kumar
Summary: This study evaluates lipid extraction from algae and biogas production using thermo-chemical pretreatment, finding hexane as a suitable solvent with a 1.8% yield. Sodium hydroxide was found to be the most influential on biogas yield, with a predicted maximum yield of 740 ml/gVS under optimal conditions. Pretreated algae and corn husk produced 60% higher biogas yield than untreated algae, showing potential for mass application.
Article
Energy & Fuels
M. B. Muhammad, R. Chandra, H. Payal
Summary: This paper investigates the integration of neem leaf litter into cattle dung-based biogas plants. The introduction of neem leaf litter increased daily biogas production, specific methane yield, and electrical energy production while reducing CO2 emissions. However, the energy required for pulverizing the neem leaf litter decreased the net increase in electrical energy. The study highlights the potential benefits of incorporating neem leaf litter into biogas production systems.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Green & Sustainable Science & Technology
M. B. Muhammad, R. Chandra
Summary: This study explores the use of neem leaf litter for biomethanation to reduce open burning and environmental concerns. It is found that certain components in the leaf litter inhibit biomethanation, but this inhibition can be neutralized by co-digestion with fruit and vegetable wastes. Diluting the bacteria with a liquid fraction of the digestate significantly increases methane yield. The results show that this co-digestion method can produce biogas suitable for clean and affordable energy.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
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)