Article
Environmental Sciences
Xiaowan Wang, Xiaobin Dong, Xue-Chao Wang, Peng Zhang, Ranran Liu, Jiri Jaromir Klemes, Jianghua Zheng
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
Environmental Sciences
Rahul Ravi, Marcella Fernandes de Souza, Anne Adriaens, Ruben Vingerhoets, Hongzhen Luo, Miet Van Dael, Erik Meers
Summary: The Russo-Ukrainian war has raised concerns about the European Union's energy security due to its heavy reliance on Russian natural gas. The RePowerEU initiative aims to increase biomethane production to replace natural gas, aligning with the EU's emission reduction goals. However, using energy crops as biogas feedstock raises land-use concerns. This study investigates the environmental impacts of using roadside grass clippings as an alternative feedstock for biogas production in Northwest Europe and provides insights for sustainable energy strategies.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
Jasmin Cooper, Luke Dubey, Adam Hawkes
Summary: Negative emission technologies (NETs) are important for achieving net-zero and net negative emission goals, but their environmental impacts vary depending on the context. Different NETs have different environmental impacts, and the choice should be based on specific goals.
SUSTAINABLE PRODUCTION AND CONSUMPTION
(2022)
Article
Green & Sustainable Science & Technology
Hossein Khajehpour, Yadollah Saboohi, George Tsatsaronis
Summary: The research proposes a new approach to map the carbon emissions production chain, with results showing varying levels of imported emissions to total CExA and penalties for import-oriented developed countries. While the ratio of CBA to PBA depends on economic states, the ratio of CExA to PBA does not follow a unique trend among developing or developed countries.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Caiqing Zhang, Lixin Wu
Summary: This paper aims to enhance the economics of farm biogas projects and explore a win-win model for economic and environmental benefits by studying the economic impact of participation in carbon trading. The results show that participating in carbon trading can improve the economic performance of farm biogas projects and contribute significantly to greenhouse gas emission reductions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Caiqing Zhang, Lixin Wu
Summary: The application of farm biogas projects is an effective measure to address the global climate problem and energy crisis, and it can support the achievement of carbon peaking and carbon neutrality. However, poor economic benefits hinder its development. This study explores the economic impact of participating in carbon trading on farm biogas projects, and finds that participation can enhance economic benefits and accelerate greenhouse gas emission reduction.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Agronomy
Long Liang, Bradley G. Ridoutt, Liyuan Wang, Bin Xie, Minghong Li, Zhongbai Li
Summary: Tea is an important cash crop and widely consumed across the world, with China being the largest producer. Research shows that emissions from tea production and processing in China are relatively high, but there is a potential to reduce emissions by 58% through improved practices.
Article
Green & Sustainable Science & Technology
W. Pan, Y. Teng
Summary: This study identified 11 variables affecting the results of embodied carbon assessment in buildings and found that after normalization, the average embodied carbon in the manufacturing, transportation, and construction stages significantly decreased. Noteworthy variations in assessment results were observed as a result of changes in modeling approaches, emission factor databases, and building structures.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Physics, Multidisciplinary
Marina Torelli Reis Martins Pereira, Monica Carvalho, Carlos Eduardo Keutenedjian Mady
Summary: This study focuses on analyzing the energy demand and greenhouse gas emissions of a typical Brazilian household, finding that urban transportation has the highest intensity of greenhouse gas emissions and energy consumption, while electricity has relatively low emissions. Additionally, the chemical exergy of solid waste presents an opportunity for improvement.
Article
Green & Sustainable Science & Technology
Tjokorda Gde Tirta Nindhia, Morag McDonald, David Styles
Summary: Small-scale anaerobic digestion of wet organic waste can contribute positively to climate mitigation, energy security, and nutrient cycling. However, lack of capacity to utilize biogas fuel may lead to biomethane venting, contributing to climate change. Policy support in Bali, Indonesia has resulted in the installation of small anaerobic digesters, but insufficient means to convert the potential fuel into useful energy has led to wasted biomethane emissions.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Jinghan He, Ninghui Han, Mingchao Xia, Tianyi Sun, Hadi Ghaebi
Summary: In this study, a new design of a multi-generation integrated energy system powered by biogas energy is proposed, assessed, and optimized. Energy, exergy, exergo-economic, and economic investigations are conducted to evaluate the system's performance. The designed system is capable of generating 108.7 kW of power, 888.7 kW of cooling load, and 703.3 kg/h of hydrogen. The energy and exergy efficiencies of the system are determined to be around 31.51% and 31.14%, respectively. Comprehensive parametric evaluation and optimization are performed to assess the influence of key variables on the system's operation, leading to the establishment of two different optimization styles. The optimization results show that a TCOP of 16.23 S/GJ and a net power of 158.21 kW can be achieved in the multiobjective optimization mode.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Jara Laso, Israel Ruiz-Salmon, Maria Margallo, Pedro Villanueva-Rey, Lucia Poceiro, Paula Quinteiro, Ana Claudia Dias, Cheila Almeida, Antonio Marques, Eduardo Entrena-Barbero, Maria Teresa Moreira, Gumersindo Feijoo, Philippe Loubet, Guido Sonnemann, Ronan Cooney, Eoghan Clifford, Leticia Regueiro, David Alonso Baptista de Sousa, Celine Jacob, Christelle Noirot, Jean-Christophe Martin, Morgan Raffray, Neil Rowan, Sinead Mellett, Ruben Aldaco
Summary: This paper presents the objectives and methodologies of the NEPTUNUS project, which aims to enhance the sustainability of the seafood sector by promoting eco-innovation and eco-labelling methods for a transition towards a circular economy. The project focuses on resource efficiency and the water-energy-seafood nexus, aligning with the United Nations Sustainable Development Goals and European policy frameworks.
Article
Construction & Building Technology
Yubing Zhang, Xiaoyan Jiang, Caiyun Cui, Martin Skitmore
Summary: This study presents a method for integrating the life cycle carbon emissions and costs of buildings to assess their carbon emission intensity based on BIM technology. Through a case study, the feasibility of the method is verified, and the conversion of high carbon emission materials is explored. The proposed methodology provides solutions for achieving low carbon emissions and costs throughout the building life cycle.
BUILDING AND ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Tamiru Kefalew, Boja Tilinti, Mulugeta Betemariyam
Summary: The study investigated the potential of biogas technology in fuelwood saving and carbon emission reduction in the Central Rift Valley of Ethiopia. Results showed that biogas technology can reduce fuelwood use and carbon emissions.
Article
Agronomy
Jan Matustik, Vladimir Koci
Summary: Using biomass as a substitute for fossil resources is considered a sustainable approach to addressing climate change. However, comprehensive climate impact assessments are necessary to make science-based policy recommendations. Currently, there is a tendency to adopt a simplistic neutrality assumption in these assessments, which can lead to inaccurate results and undesired consequences. This article argues for more comprehensive evaluations of biomass projects, taking into account the complexity of production, timing of emissions, allocation procedures, and climate change characterization methodology.
GLOBAL CHANGE BIOLOGY BIOENERGY
(2022)
Article
Mathematics, Applied
Zahid Nisar, Tasawar Hayat, Ahmed Alsaedi, Bashir Ahmad
Summary: The current article investigates the magnetohydrodynamic (MHD) radiative peristaltic flow of a couple stress nanoliquid in a symmetric channel. The influences of Joule heating, viscous dissipation, Brownian motion, thermophoresis, and a first-order chemical reaction on the flow characteristics are examined. The findings show that temperature increases with increasing Brownian motion and thermophoresis parameters, while it decreases with radiation variable. The concentration of the fluid decreases for a couple stress fluid variable, and the heat transfer coefficient increases with the Eckert number.
MATHEMATICAL METHODS IN THE APPLIED SCIENCES
(2023)
Article
Mathematics, Applied
Santosh Biswas, Bashir Ahmad, Subhas Khajanchi
Summary: In this paper, we investigate a predator-prey system with cannibalism and infection. We study the model in presence of delays for the maturation of prey and predator. The local stability and bifurcation analysis around realistic steady states are investigated. Our findings demonstrate the destabilizing effect of maturation delays and the self-regulatory role of cannibalism in controlling disease transmission and stabilizing the oscillations in the system.
MATHEMATICAL METHODS IN THE APPLIED SCIENCES
(2023)
Article
Computer Science, Artificial Intelligence
G. Narayanan, M. Syed Ali, Hamed Alsulami, Tareq Saeed, Bashir Ahmad
Summary: This paper proposes a novel approach to solve the synchronization problem of T-S fuzzy fractional-order discrete-time complex-valued genetic regulatory networks. Several effective conditions are derived based on algebraic inequality and complex-valued linear matrix inequalities. Our results are less conservative than existing ones.
NEURAL PROCESSING LETTERS
(2023)
Article
Mathematics
Ahmed Alsaedi, Mokhtar Kirane, Ahmad Z. Fino, Bashir Ahmad
Summary: By using the nonlinear capacity method, some results are obtained regarding the nonexistence of nontrivial solutions to time and space fractional differential evolution equations with transformed space argument. These results are then applied to a 2 x 2 system of equations with transformed space arguments.
BULLETIN OF MATHEMATICAL SCIENCES
(2023)
Article
Engineering, Environmental
Yating Liu, Bin Chen, Cuncun Duan, Hao Wang
Summary: An economic loss assessment framework was proposed to evaluate the economic losses of urban waterlogging. The integrated catchment management model was used to simulate the waterlogging conditions, while the information-based network environ analysis was employed to quantify the control relationships among different economic sectors. The results of a case study in Beijing showed significant direct economic losses and the transfer of waterlogging risk through the national supply chain.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Mathematics, Interdisciplinary Applications
Ahmed Alsaedi, Hana Al-Hutami, Bashir Ahmad
Summary: In this paper, a new class of nonlinear multi-term impulsive anti-periodic boundary value problems involving Caputo type fractional q-derivative operators of different orders and the Riemann-Liouville fractional q-integral operator is introduced and investigated. The uniqueness of solutions to the given problem is proved with the aid of Banach's fixed point theorem. An existence result for the problem is also obtained by applying a Shaefer-like fixed point theorem. Examples are constructed to illustrate the obtained results.
FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY
(2023)
Article
Green & Sustainable Science & Technology
Yidan Ai, Wenxin Huai, Bin Chen, Zhonghua Yang, Huilin Wang
Summary: The ability of suspended vegetation to handle solute accumulation in natural waters through their roots has been of great interest for improving water quality. This research investigates the evolution of solute cloud in channels with suspended vegetation after point source release on the water surface. The results show that the solute cloud behavior is influenced by various factors including gap ratio and vegetation density.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Automation & Control Systems
Ahmed Alsaedi, Jinde Cao, Bashir Ahmad, Ahmed Alshehri, Xuegang Tan
Summary: This article proposes a distributed adaptive control scheme for second-order leader-following multiagent systems with only position information as output. An auxiliary network is used to estimate unmeasurable velocity information and make the output-based distributed adaptive control protocol effective. The distributed synchronization criteria are established, and the convergence analysis is provided based on the stability theory. Several simulation examples are presented to validate the proposed criteria.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2023)
Article
Chemistry, Multidisciplinary
Sohail A. Khan, T. Hayat, A. Alsaedi
Summary: In this study, the magnetohydrodynamic bioconvective flow of a non-Newtonian nanomaterial over a stretched sheet is analyzed. The convective conditions and irreversibility analysis in the presence of gyrotactic micro-organisms are discussed. Energy expressions considering thermal radiation, heat generation, and ohmic heating are used. By employing Buongiorno's model, the characteristics of the nanoliquid through thermophoresis and random diffusions are studied. Nonlinear expressions of the model are transformed through adequate transformations and computed using the Newton built in-shooting technique. Graphical studies are conducted on influential variables for velocity, concentration, microorganism field, temperature, and entropy rate. Significant findings include velocity reduction with bioconvection Rayleigh number and magnetic variable, temperature augmentation with higher heat generation variable, and entropy and temperature enhancement with increased magnetic variable.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Aneeta Razaq, Tasawar Hayat, Sohail A. Khan, Ahmed Alsaedi
Summary: This study investigates the hydromagnetic entropy optimized flow of a hybrid nanoliquid (Pb + Fe2O3/C2H6O2) on a curved stretchable surface. The Darcy-Forchheimer model is used for the porous space, with lead (Pb) and ferric oxide (Fe2O3) as the nanoparticles and ethylene glycol (C2H6O2) as the base liquid. The effects of various variables on velocity, thermal field, and entropy are analyzed. The results show that an increase in thermal relaxation time enhances heat transport rate and temperature, while an increase in the magnetic variable intensifies entropy and thermal field.
NANOSCALE ADVANCES
(2023)
Article
Mathematics, Interdisciplinary Applications
Bashir Ahmad, Manal Alnahdi, Sotiris K. Ntouyas
Summary: In this study, a new notion of nonlocal closed boundary conditions is presented. By applying these conditions, the existence of solutions for a mixed nonlinear differential equation involving a right Caputo fractional derivative operator and left and right Riemann-Liouville fractional integral operators of different orders is discussed. A decent and fruitful approach of fixed point theory is employed to establish the desired results. Examples are provided to illustrate the main findings. The paper concludes with some interesting observations.
FRACTAL AND FRACTIONAL
(2023)
Article
Green & Sustainable Science & Technology
Yanhui Guo, Hui Wang, Wen Zhang, Bin Chen, Dan Song
Summary: This study evaluates the sustainability of protected vegetable production system (PVPS) in China using emergy synthesis. The results show that reducing artificial environment construction input can decrease emergy input and improve sustainability. Technological improvements can further enhance the sustainability of PVPS.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Multidisciplinary
Sohail A. Khan, T. Hayat, A. Alsaedi
Summary: In this study, the magnetohydrodynamic bioconvective flow of a non-Newtonian nanomaterial over a stretched sheet is examined. The convective conditions and the effects of gyrotactic micro-organisms are analyzed. The obtained results show that the velocity decreases with the bioconvection Rayleigh number and magnetic variable, while the temperature and entropy increase with higher heat generation and magnetic variable. The concentration in the microorganism field decreases with a higher Peclet number, and the temperature distribution increases with radiation and solutal Biot number. The entropy rate increases with radiation and diffusion variables.
NANOSCALE ADVANCES
(2023)
Article
Mathematics, Applied
Abdelhamid Bensalem, Abdelkrim Salim, Bashir Ahmad, Mouffak Benchohra
Summary: This paper investigates the existence of mild solutions to a non-instantaneous integrodifferential equation using resolvent operators in the sense of Grimmer in Frechet spaces. Sufficient criteria ensuring the controllability of the given problem are presented by utilizing the technique of measures of noncompactness in conjunction with the Darbo's fixed point theorem. An illustrative example is also discussed.
CUBO-A MATHEMATICAL JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
M. Genovese, F. Piraino, P. Fragiacomo
Summary: This research proposes the concept of a hydrogen valley in southern Italy, where hydrogen is produced centrally and delivered via fuel cell hybrid trains to refueling stations, providing transportation services. The analysis from both technical and economic perspectives shows that the cost of hydrogen and energy efficiency reached competitive levels, and hydrogen rail transport offers significant benefits in terms of emissions reduction and economic gains compared to conventional diesel trains and fully electric trains.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Miaomiao Liu, Payam Nejat, Pinlu Cao, Carlos Jimenez-Bescos, John Kaiser Calautit
Summary: This article provides a critical review of the performance of windcatchers, pointing out the current research gaps and issues, and proposing directions for further investigation and market prospects.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Solomon Boadu, Ebenezer Otoo
Summary: Despite Africa's vast energy resources, including wind energy, the continent faces challenges in developing its wind energy industry. Northern African countries and South Africa currently dominate the wind energy sector in Africa. To uplift Africa's socio-economic status, strong political will, supportive policies, and institutional frameworks are needed to drive the development of wind energy and overcome existing challenges.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
E. K. Grubbs, S. M. Gruss, V. Z. Schull, M. J. Gosney, M. V. Mickelbart, S. Brouder, M. W. Gitau, P. Bermel, M. R. Tuinstra, R. Agrawal
Summary: As the global population grows, the demand for food, energy, and water will increase significantly. However, limited land availability and competition for solar resources pose challenges to resource generation technologies. In the United States, both agriculture and solar energy production have adopted densification schemes to improve yields and energy output per unit of land. This research proposes an Agrivoltaic food and energy coproduction architecture that optimizes power generation while maintaining crop productivity by implementing ideal anti-tracking during critical growth periods. This technology offers a viable pathway for widespread solar implementation throughout the contiguous United States.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Han Shao, Rui Henriques, Hugo Morais, Elisabetta Tedeschi
Summary: The integration of offshore wind energy into the electric grid provides opportunities in terms of environmental sustainability and cost efficiency, but poses challenges to power quality. This survey offers a deeper understanding of disturbance detection and classification tools, exploring root causes, disturbance locations, and algorithmic solutions. It highlights synchronized waveform measurement and discusses evaluation metrics for detection and classification algorithms. Additionally, a novel system-wide monitoring framework is proposed.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Eleni Davidson, Yair Schwartz, Joe Williams, Dejan Mumovic
Summary: A continued upward trend in global greenhouse gas emissions poses risks to global infrastructure and built assets. Maintaining high indoor environmental quality standards is a challenge for higher education institutions under future climates. Passive cooling mechanisms may be insufficient to tolerate predicted temperature increases. Different building typologies have varying energy demand projections.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
Kexin Pang, Jian Zhou, Stamatis Tsianikas, David W. Coit, Yizhong Ma
Summary: This study proposes a new framework for long-term microgrid expansion planning, using deep reinforcement learning method to consider various uncertainties and constraints. The framework aims to enhance the effectiveness of microgrid expansion planning from the perspectives of economy, resilience, and greenhouse gas emission reduction.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
Jun Zhao, Kangyin Dong, Xiucheng Dong
Summary: The continuous growth of global electricity penetration has provided modern energy for alleviating energy poverty, but its impact on carbon neutrality has been overlooked. The research reveals that clean electricity from traditional fossil energy and renewable energy has a positive influence on the greenhouse effect. Eradicating energy poverty can effectively alleviate the greenhouse effect, especially in non-Belt and Road Initiative (B&RI) nations.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Hossein Shahbeik, Hamed Kazemi Shariat Panahi, Mona Dehhaghi, Gilles J. Guillemin, Alireza Fallahi, Homa Hosseinzadeh-Bandbafha, Hamid Amiri, Mohammad Rehan, Deepak Raikwar, Hannes Latine, Bruno Pandalone, Benyamin Khoshnevisan, Christian Sonne, Luigi Vaccaro, Abdul-Sattar Nizami, Vijai Kumar Gupta, Su Shiung Lam, Junting Pan, Rafael Luque, Bert Sels, Wanxi Peng, Meisam Tabatabaei, Mortaza Aghbashlo
Summary: This review explores the production of biocrude oil from biomass feedstocks through the process of hydrothermal liquefaction (HTL). It discusses the impact of process parameters on the quality, quantity, cost, and environmental impacts of biofuels. The review also highlights the challenges and prospects for the future development of biocrude oil.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
Meysam Majidi Nezhad, Mehdi Neshat, Georgios Sylaios, Davide Astiaso Garcia
Summary: Digital twins promise innovation for the marine renewable energy sector by using modern technological advances and the existing maritime knowledge frameworks. This research presents critical aspects of digital twin implementation challenges in marine energy digitalization approaches that use and combine data systems.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
Yeganeh Sharifian, Hamdi Abdi
Summary: This paper discusses the background and objectives of the multi-area economic dispatch problem, as well as various techniques and methods applied in this field. It also covers comprehensive formulations of the problem and important issues in the field of probabilistic MAED, along with some related concepts and suggestions.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
J. G. B. Churchill, V. B. Borugadda, A. K. Dalai
Summary: The increasing global energy demand and the need to reduce fossil fuel reliance have created a demand for renewable and sustainable fuel sources. This review explores the potential of tall oil, a by-product of the pulping industry, as a feedstock for biofuels. The review provides an overview of tall oil production, purification, and treatment, and investigates recent trends and barriers towards tall oil-derived biofuels.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
David C. Broadstock, Xiangnan Wang
Summary: This study provides a general review of research on district cooling, identifying key topics and themes and highlighting potential research priorities for future studies.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Green & Sustainable Science & Technology
L. Scharnhorst, D. Sloot, N. Lehmann, A. Ardone, W. Fichtner
Summary: This study investigates and analyzes the barriers to demand response in industrial and commercial sectors, highlighting their significance. Concerns about diminished product quality, disruptions to production processes, human resource management, and revenue uncertainty are identified as the most frequently cited barriers. Overcoming these barriers requires bridging knowledge gaps, allocating sufficient resources, and adapting external incentives and policies.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Green & Sustainable Science & Technology
Tong Feng, Yuechi Sun, Yating Shi, Jie Ma, Chunmei Feng, Zhenni Chen
Summary: Air pollution is a significant global challenge, and policymakers have implemented policies to reduce it. Evaluating the effectiveness of these policies is critical, and our study reveals trends and gaps in air pollution policy research. We found that research has shifted from focusing solely on air pollutants to including methodologies, policies, and health implications. China has emerged as a major contributor in this field of research.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)