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Review
Green & Sustainable Science & Technology
Cornelis Bumharter et al.
Summary: Despite the predominance of biogas plants in the EU, the potential for converting waste streams remains largely untapped. Analysis of EU databases reveals that only 2.65% of biogas is being produced compared to what is possible. The current legislative landscape and biogas outlook indicate the need for small-scale local biogas plants to address the uneconomical nature of waste systems due to high transport distances.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Green & Sustainable Science & Technology
Idiano D'Adamo et al.
Summary: Circular bioeconomy models aim to reduce dependence on non-renewable and unsustainable resources, and this study provides an economic analysis and evaluation of biomethane plants under different policy scenarios, demonstrating the feasibility of biomethane as a sustainable energy resource.
SUSTAINABLE PRODUCTION AND CONSUMPTION
(2023)
Review
Energy & Fuels
Mohsen Karrabi et al.
Summary: Recently, there has been growing interest in using organic or biodegradable wastes, including lignocellulosic wastes (LWs), as renewable energy sources. Anaerobic digestion (AD) of these wastes can mitigate environmental damage and produce biogas and bioenergy, which is particularly valuable in developing countries. However, there are several challenges to overcome, such as waste floating on top of reactors, high carbon-to-nitrogen ratio (CNR), complex structure of LWs, and poor degradability due to high lignin content. These challenges can be addressed through methods like mixing in reactors, reducing CNR, balancing inoculum-to-substrate ratio (ISR), and pretreatments. This study aims to review the literature on AD of LWs, identify existing challenges, and propose strategies to improve bioenergy production from this waste.
Review
Environmental Sciences
Lu Feng et al.
Summary: Anaerobic digestion (AD) is a versatile technology that can produce biofuels, biochemicals, and fertilizer as part of the circular bioeconomy. Agricultural residues, such as animal slurry, straw, and grass silage, are valuable resources with significant potential to increase biogas and methane yields. However, it is crucial to assess the long-term impacts and the potential accumulation of unwanted substances. This comprehensive literature review analyzes the benefits and environmental impacts of using agricultural residues for AD and highlights potential risks and challenges in developing a biogas-centered circular bioeconomy.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Green & Sustainable Science & Technology
Stanley Zira et al.
Summary: The objective of this study was to evaluate the sustainability of cattle systems in South Western Europe by combining life cycle sustainability assessment (LCSA) with assessment of feed-food competition and economic robustness. The results indicated that MonSy performed less well for 10 and ParSy for 14 out of the 27 indicators researched when compared to HolSy, the reference case. However, MonSy had lower impacts on some environmental indicators and lower life cycle costs, while ParSy had lower terrestrial and freshwater ecotoxicity and a higher internal rate of return.
SUSTAINABLE PRODUCTION AND CONSUMPTION
(2023)
Article
Thermodynamics
Maria Paula C. Volpi et al.
Summary: Recovering bioenergy through anaerobic digestion has become an attractive waste management approach, especially in sugarcane biorefineries. The co-digestion of residues enhances biogas production and shows great potential for year-round energy generation. A recent economic analysis compared different scenarios and found that co-digestion-based scenarios had the best performance for electricity and biomethane production, with higher profitability for biomethane. This study highlights the importance of residue co-digestion as a sustainable energy source in ethanol biorefineries.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Environmental Sciences
Xiaowan Wang et al.
Summary: This study compared two waste treatment biogas projects in aquaculture and found that the comprehensive environmental impact of the LC system is smaller than the AI system. Suggestions were made to optimize the manure management process, specifically promoting dry-cleaning manure pre-treatment, automatic fermentation gas production, and final biogas slurry filtration drip irrigation in practical pig farms.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Chemical
Khaled Obaideen et al.
Summary: This study provides a preliminary evaluation of the role and contribution of biogas as a sustainable energy source towards achieving the sustainable development goals (SDGs). It identifies that biogas has direct impacts and contributions to 12 out of the 17 SDGs, mainly through increasing renewable energy, reducing climate change, enhancing waste management, and creating jobs.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Environmental Sciences
Josef Marousek et al.
Summary: The economics of producing energy-valuable gases through fermenting phytomass is threatened by the costs associated with waste management of highly diluted fermentation residues. The traditional practice of using the solid fraction of the residues for energy purposes leads to nutrient loss and farmers have realized that the organic matter in the residues has little agronomic value. For the first time, it is proposed to activate the charred residues and use the resulting sorbent to capture phosphorus from the liquid fraction, showing promising results for plant nutrition and soil improvement.
Article
Thermodynamics
J. Villarroel-Schneider et al.
Summary: This study proposes integrated solutions for sustainable development in Latin American dairy farms through waste-to-energy approach, including using cow manure to produce biogas as the main energy conversion pathway, and meeting the energy demands of farms through biogas digesters, power generators, and combined heat and power systems, while also providing organic fertilizers.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Review
Engineering, Multidisciplinary
Yi-Ming Wei et al.
Summary: This study comprehensively collates and investigates 1105 published research studies on carbon peaking and carbon neutrality, and summarizes the priorities and standpoints of key industries. The study also identifies the scientific concerns and strategic demands for achieving these two goals, providing theoretical insights and practical measures for China's carbon-neutral future. This research is crucial for policy formulation related to carbon peaking and carbon neutrality.
Article
Environmental Sciences
Desire Wade Atchike et al.
Summary: To achieve renewable energy goals, developing countries like Malaysia recognize waste-to-renewable energy (WTRE) technologies as the best solution. Malaysia is starting to use the conversion of animal dung into biogas as a suitable method for power generation, contributing to the implementation of WTRE technologies. The article analyzes Malaysia's waste management issues, energy mix, and the potential capacity to produce biogas energy through waste, highlighting the importance of WTRE transition as the primary source of energy transition.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Review
Environmental Sciences
Chama Theodore Ketuama et al.
Summary: This study focuses on the sustainable production and utilization of small-scale biogas energy in developing countries, particularly in the Sub-Saharan Africa region. Economic constraints are identified as the most dominant issue, with progress in reducing constraints observed in the Southern, Eastern, and Western Africa regions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Prakash Singh et al.
Summary: Anaerobic digestion plays a significant role in achieving the circular economy objective by recovering energy from biomass and aiding in nutrient recovery and greenhouse gas reduction. Utilizing crop residue biomass in India has the potential to generate a substantial amount of electricity, with lower carbon emissions compared to alternative fuels.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
Gulizar Balcioglu et al.
Summary: Anaerobic digestion of organic wastes is a promising solution to reduce GHG emissions and provide multiple benefits. This study evaluates the environmental and economic sustainability of heat and power produced through AD of different types of waste in Turkey. The results show that using feedstocks with high solid content and biogas yield leads to lower environmental impacts, while bioenergy from cattle slurry has higher impacts. The credits from displacement of mineral fertilisers offset most impacts, and the costs of energy conversion are lower compared to natural gas and grid electricity.
SUSTAINABLE PRODUCTION AND CONSUMPTION
(2022)
Article
Joonrae Roger Kim et al.
Bioresource Technology Reports
(2022)
Article
Green & Sustainable Science & Technology
Daisong Yu et al.
Summary: The implementation of carbon trading system has significant impact on various aspects of the economy and society. Agriculture, as a high carbon emitting industry, has been greatly affected. China's carbon trading system has a significant promotion effect on agricultural green total factor productivity, and this effect becomes stronger over time under the constraint of reducing carbon quota.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Environmental Sciences
Zheng Zhang et al.
Summary: This paper conducts a bibliometric analysis on the topic of carbon neutrality to reveal the research progress and evolution of research hotspots. The findings show that carbon neutrality research is abundant at both macro and micro levels. Low carbon development is the premise, and emission reduction and carbon sinks are the basis of carbon neutrality. The degree of research varies significantly among countries, with China having the highest number of publications. Carbon neutrality requires a comprehensive analysis of technology, economy, and society. Carbon taxes and carbon markets are important economic mechanisms, while research on negative carbon technologies and renewable energy is growing rapidly. Carbon market, negative carbon technology, circular economy, and green energy will be the focus of future research.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
Boqiang Lin et al.
Summary: This article explores the impact of China's carbon trading policy on carbon emissions, finding that carbon trading does effectively reduce carbon emissions but not through the market mechanism, but rather through government intervention and energy consumption.
SUSTAINABLE PRODUCTION AND CONSUMPTION
(2022)
Article
Economics
Kai-Hua Wang et al.
Summary: This paper investigates the heterogeneous responses of carbon emission trading prices to different time frequencies of economic policy uncertainty. The empirical results reveal that the relationship between economic policy uncertainty and carbon emission trading prices is dynamic and unstable. The findings contribute to a better understanding of the impact of economic policy uncertainty on carbon emission trading markets and provide valuable insights for policy-making.
Article
Construction & Building Technology
Caiqing Zhang et al.
Summary: This study compares the economic benefits of Battery Charging and Swapping Station (BCSS) under three different power purchase models and finds that the direct power trading model significantly increases the project's Net Present Value (NPV) and Internal Rate of Return (IRR), making up for the investment cost. Additionally, it reveals that the use of clean energy has better environmental benefits compared to coal power generation.
SUSTAINABLE CITIES AND SOCIETY
(2021)
Article
Green & Sustainable Science & Technology
Johan Niskanen et al.
Summary: This study examines the development trend of the Swedish agricultural biogas sector, finding that it is currently stagnant with few new plants established. Through interviews with key stakeholders and document studies, the results reveal different growth patterns, stagnation factors, and possible development paths in various regions.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Green & Sustainable Science & Technology
Jiuping Xu et al.
Summary: This study designed a biogas power generation project for the clean recycling of biomass waste, comparing the economic and environmental benefits with landfill/incineration. Results showed that single-feedstock anaerobic digestion improved economic benefits, while mixed-feedstock digestion reduced carbon emissions. The proposed methodology was efficient in waste disposal, achieving only 30% of carbon emissions compared to landfill/incineration, with an annual economic benefit of 6.74 million CNY.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Thermodynamics
Dan Cudjoe et al.
Summary: Global environmental change is driven by food production, and biogas from food waste is considered a better source of clean energy. This study assessed the electricity generation potential and economic feasibility of biogas to electricity projects in major cities of Ghana, revealing that the projects are economically feasible in Accra and Kumasi. However, the projects become infeasible when the discount rate exceeds 20%.
Review
Green & Sustainable Science & Technology
Ulysse Bremond et al.
Summary: The future European Green Deal aims to reduce greenhouse gas emissions by 2030, with a focus on decarbonizing the gas sector and developing biomethane. The biogas sector is shifting towards utilizing organic wastes and agricultural by-products as feedstocks, upgrading biogas to biomethane for various applications, and reducing subsidy schemes to increase sustainability and reduce production costs. This article identifies and discusses key improvement tracks for the biogas sector to ensure growth towards 2030 and beyond.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Huang Meng-Tian et al.
Summary: The concept of carbon neutrality is emphasized to achieve long-term temperature goals, with global emissions needing to peak as soon as possible. China has announced increased commitments to peak emissions by 2030 and achieve carbon neutrality by 2060, requiring rapid and far-reaching transitions in society.
ADVANCES IN CLIMATE CHANGE RESEARCH
(2021)
Article
Energy & Fuels
Josef Marousek et al.
Summary: There is a consensus that Spirulina can be used for wastewater management and biorefining feedstock, although the economic challenges remain. Spirulina cultivated in wastewater serves as a biodiesel source, with oil extracted in feedstock turning into biodiesel. Blends of Spirulina biodiesel show improved efficiency and reduced emissions, contributing positively to greenhouse gas reduction.
Article
Green & Sustainable Science & Technology
Shuwen Niu et al.
Summary: Research shows that medium- and large-scale biogas projects have strong feasibility in practice, providing clean cooking fuel for rural households and bringing environmental and social benefits. By monetizing these benefits, the multiple advantages of the projects can be effectively evaluated. The government, biogas plants, and users should share the construction and operation costs, and a partially competitive market is a suitable mechanism for operating MLBPs.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Geosciences, Multidisciplinary
Barbora Bencoova et al.
Summary: Renewable energy sources, such as wind, solar, hydro, geothermal, and biomass, are clean, safe, and inexhaustible, playing a significant role in energy production in Europe and Slovakia. Their correct placement can contribute to regional development and social economic cohesion. Efforts to efficiently utilize renewable energy sources are gaining increasing attention and support globally, including in Slovakia.
ACTA MONTANISTICA SLOVACA
(2021)
Article
Green & Sustainable Science & Technology
J. Villarroel-Schneider et al.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2020)
Article
Multidisciplinary Sciences
Patrick Bayer et al.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2020)
Article
Green & Sustainable Science & Technology
Jessica Aline Menezes Lima et al.
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Green & Sustainable Science & Technology
M. H. Khoshgoftar Manesh et al.
Article
Green & Sustainable Science & Technology
Jiahao Xing et al.
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Green & Sustainable Science & Technology
Caiqing Zhang et al.
JOURNAL OF CLEANER PRODUCTION
(2019)
Article
Green & Sustainable Science & Technology
Yu-nan Xue et al.
JOURNAL OF CLEANER PRODUCTION
(2019)
Article
Green & Sustainable Science & Technology
Niklas P. E. Karlsson
SUSTAINABLE PRODUCTION AND CONSUMPTION
(2019)
Article
Agricultural Engineering
A. K. P. Meyer et al.
BIOMASS & BIOENERGY
(2018)
Article
Green & Sustainable Science & Technology
Andrew Purdy et al.
JOURNAL OF CLEANER PRODUCTION
(2018)
Review
Green & Sustainable Science & Technology
Nicolae Scarlat et al.
Proceedings Paper
Energy & Fuels
Prachuab Peerapong et al.
2017 INTERNATIONAL CONFERENCE ON ALTERNATIVE ENERGY IN DEVELOPING COUNTRIES AND EMERGING ECONOMIES
(2017)
Article
Thermodynamics
Anna Mardoyan et al.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2015)
Article
Agriculture, Multidisciplinary
Josef Marousek
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2013)