Article
Agricultural Engineering
Kabir Abogunde Abdulyekeen, Wan Mohd Ashri Wan Daud, Muhamad Fazly Abdul Patah, Faisal Abnisa
Summary: The potential for producing high calorific value solid fuel was investigated using a helical screw rotation-induced (HSRI) fluidized bed reactor. The study showed that HSRI torrefaction improved the properties of the torrefied product, increasing the CV, fixed carbon, and ash content while decreasing volatile matter, moisture content, mass, and energy yields. The CV of the torrefied solid fuel increased by a factor of 1.43 and 1.58 at 280℃ for the 40 and 0 rpm conditions, respectively. HSRI torrefaction also enhanced the removal of hydroxyl functional groups and improved the hydrophobicity of the torrefied solid fuel. Therefore, the HSRI fluidized bed reactor enables a more uniform temperature distribution, higher heat transfer rate, and homogeneous torrefied solid product compared to a fixed bed reactor.
BIORESOURCE TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
James L. Hanson, Michael T. Onnen, Nazli Yesiller, Kevin B. Kopp
Summary: This article reviews the heat generation in municipal solid waste landfills and focuses on the extraction heat management strategy. Numerical analysis was conducted to study the feasibility of a vertical heat extraction system and the effects of system configuration on overall performance. The results show that the extraction system has the greatest influence on landfill temperatures at central depths, while the influence at cover and liner locations is less significant. The temperature-depth profiles demonstrate preferential heat extraction from central depths and the return of waste temperatures to reference conditions at a great radial distance. The study also finds that fluid velocity has a greater impact on heat extraction than pipe diameter for extraction system parameters, and waste height has a stronger influence than waste placement rate for landfill operational conditions. The heat extraction systems provide a long-term sustainable alternative energy source with substantial energy production compared to other renewable technologies due to the transition to geothermal systems after the heat production lifetime of landfills.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Green & Sustainable Science & Technology
Nathalia Silva de Souza Lima Cano, Eleni Iacovidou, Emilia Wanda Rutkowski
Summary: This article examines the terminology used to describe recycling value chains globally and provides an overview of the current state of MSW recyclable waste materials management in developed and developing economies. It proposes a typology for describing recyclable waste material management and highlights the complex, context-specific nature of recycling value chains. The study emphasizes the importance of governance in coordinating recycling networks and improving recycling performance.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Chemical
Miorita Ungureanu, Juhasz Jozsef, Valeria Mirela Brezoczki, Peter Monka, Nicolae Stelian Ungureanu
Summary: This study explores the possibility of energy recovery from municipal solid waste in Maramures County by analyzing data from the waste management system and conducting experiments to estimate the energy potential of the waste. The analysis concludes that municipal solid waste in Maramures County is a potential source of renewable energy.
Review
Engineering, Multidisciplinary
Gertruth Leevhan Tihin, Kim Hung Mo, Chiu Chuen Onn, Hwai Chyuan Ong, Y. H. Taufiq-Yap, Hwei Voon Lee
Summary: The generation rate and composition of global municipal solid waste (MSW), as well as the potential of converting MSW into refuse-derived fuel (RDF) for energy recovery, are discussed. The importance of pre-treatment processes to enhance RDF properties is highlighted. Additionally, the review provides an overview of MSW generation, composition, pretreatment, and application in the cement industry, as well as recent advancements in thermochemical upgrading technologies.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Ioan-Robert Istrate, Enrique Medina-Martos, Jose-Luis Galvez-Martos, Javier Dufour
Summary: This study utilized material flow analysis to quantify the energy recovery potential of MSW in Madrid for 2030. The results suggest a potential decrease in overall energy recovery due to increased recycling rates of plastic, paper, and cardboard. However, waste streams suitable for energy recovery represent a significant portion of the MSW generated in the scenarios for 2030.
Article
Thermodynamics
Atul Kumar, Sukha Ranjan Samadder
Summary: Due to heterogeneity in MSW characteristics, accurate estimation methods for heating value are needed for developing countries. This study developed linear and non-linear prediction models for lower heating value (LHV) based on the composition analysis of both mixed MSW and combustible components. The LHV prediction models showed high accuracy and the models using combustible components had slightly better performance. Additionally, an appropriate RDF mix was determined and the energy recovery potential from mass-burn incineration and RDF incineration was evaluated, with the predicted RDF and mixed MSW having energy recovery potentials of 1310 kWh/tonne and 837 kWh/tonne of dry weight, respectively.
Article
Energy & Fuels
Cansu Birgen, Elisa Magnanelli, Per Carlsson, Oyvind Skreiberg, Jostein Mosby, Michael Becidan
Summary: The Gaussian processes regression (GPR) models developed in this study successfully predicted the daily lower heating value of municipal solid waste (MSW), showing better accuracy compared to models reported in the literature and minimizing the laborious data analysis. The prediction model not only allows for online operation but also dynamically adjusts with new data, providing a reliable basis for further process optimization and control.
Article
Environmental Sciences
Eyasu Derbew Demeke, Mekonnen Abebayehu Desta, Yedilfana Setarge Mekonnen
Summary: Producing biomass briquettes from industrial solid wastes is an environmentally friendly approach for Ethiopia to meet its growing energy demands and manage waste in industrial parks. This study successfully produced biomass briquettes using a mixture of textile sludge, cotton residue, and avocado peels as a binder. The briquettes made from a 50:50 ratio of industrial sludge to cotton residue showed the highest efficiency. The inclusion of avocado peels improved the binding and heating properties of the briquettes. This research suggests that mixing different industrial solid wastes with fruit waste can be an effective method for producing sustainable biomass briquettes and promoting waste management.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Sidhartha Sondh, Darshit S. Upadhyay, Sanjay Patel, Rajesh N. Patel
Summary: The article explores the significant problem of untreated Municipal solid waste accumulation in the modern world, emphasizing the necessity of an efficient and sustainable MSW management system for environmental preservation and sustainable development.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Green & Sustainable Science & Technology
E. V. Tsipis, D. A. Agarkov, Yu. A. Borisov, S. V. Kiseleva, A. B. Tarasenko, S. I. Bredikhin, V. V. Kharton
Summary: This study focuses on the feasibility of utilizing various waste gas mixtures for electric power and heat generation using solid oxide fuel cells (SOFCs), and discusses their sources and related technological aspects. The advantages and limitations of SOFCs are analyzed in comparison with other mature technologies, and the dynamics of high-calorific waste generation, gas purification methods, and state-of-the-art SOFC developments are briefly addressed.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Energy & Fuels
Wu Yang, Deepak Pudasainee, Rajender Gupta, Wei Li, Ben Wang, Lushi Sun
Summary: The submicron particles generated from MSW combustion mainly consist of organic components, alkali chlorides, alkali sulfates, and refractory inorganic minerals. The formation of submicron particles includes five modes: condensation, nucleation, accumulation, crystallization, and fragmentation.
Article
Green & Sustainable Science & Technology
Rawan A. Tayeh, Mohammed F. Alsayed, Yahya A. Saleh
Summary: Palestinian territories depend on imported energy from Israel and struggle with MSW accumulation. The government is seeking sustainable solutions, with waste-to-energy seen as a promising option.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Mengqiu Li, Zhuze Shao, Guodi Zheng
Summary: Sampling at different waste sites in Suzhou revealed that anaerobic digestion plants and transfer stations were the main sources of VOCs and ozone formation, as well as odor pollution. The VOC emissions from the anaerobic digestion plant reached up to 31.8 mg/m3, followed by the transfer station at 22.9 mg/m3. The study provides valuable information for reducing ozone formation potential and odor pollution in municipal solid waste management.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Green & Sustainable Science & Technology
Rabia Amen, Javaria Hameed, Gadah Albashar, Hafiz Waqas Kamran, Mansoor Ul Hassan Shah, Muhammad Khaliq U. Zaman, Ahmad Mukhtar, Sidra Saqib, Saqib Iqbal Ch, Muhammad Ibrahim, Sami Ullah, Abdullah G. Al-Sehemi, Sajid Rashid Ahmad, Jiri Jaromir Klemes, Awais Bokhari, Saira Asif
Summary: The research developed correlations to accurately predict the energy content of municipal solid waste (MSW), with model 13 based on ultimate analysis demonstrating the highest accuracy. This approach helps save experimentation costs and provides theoretical foundations for modeling waste combustion, pyrolysis processes, and thermal conversion.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Green & Sustainable Science & Technology
Cameron Bracken, Nathalie Voisin, Casey D. Burleyson, Allison M. Campbell, Z. Jason Hou, Daniel Broman
Summary: This study presents a methodology and dataset for examining compound wind and solar energy droughts, as well as the first standardized benchmark of energy droughts across the Continental United States (CONUS) for a 2020 infrastructure. The results show that compound wind and solar droughts have distinct spatial and temporal patterns across the CONUS, and the characteristics of energy droughts are regional. The study also finds that compound high load events occur more often during compound wind and solar droughts than expected.
Article
Green & Sustainable Science & Technology
Ning Zhang, Yanghao Yu, Jiawei Wu, Ershun Du, Shuming Zhang, Jinyu Xiao
Summary: This paper provides insights into the optimal configuration of CSP plants with different penetrations of wind power by proposing an unconstrained optimization model. The results suggest that large solar multiples and TES are preferred in order to maximize profit, especially when combined with high penetrations of wind and photovoltaic plants. Additionally, the study demonstrates the economy and feasibility of installing electric heaters (EH) in CSP plants, which show a linear correlation with the penetration of variable energy resources.
Article
Green & Sustainable Science & Technology
M. Szubel, K. Papis-Fraczek, S. Podlasek
Article
Green & Sustainable Science & Technology
J. Silva, J. C. Goncalves, C. Rocha, J. Vilaca, L. M. Madeira
Summary: This study investigated the methanation of CO2 in biogas and compared two different methanation reactors. The results showed that the cooled reactor without CO2 separation achieved a CO2 conversion rate of 91.8%, while the adiabatic reactors achieved conversion rates of 59.6% and 67.2%, resulting in an overall conversion rate of 93.0%. Economic analysis revealed negative net present worth values, indicating the need for government monetary incentives.
Article
Green & Sustainable Science & Technology
Yang Liu, Yonglan Xi, Xiaomei Ye, Yingpeng Zhang, Chengcheng Wang, Zhaoyan Jia, Chunhui Cao, Ting Han, Jing Du, Xiangping Kong, Zhongbing Chen
Summary: This study investigated the effect of using nanofiber membrane composites containing Prussian blue-like compound nanoparticles (PNPs) to relieve ammonia nitrogen inhibition of rural organic household waste during high-solid anaerobic digestion and increase methane production. The results showed that adding NMCs with 15% PNPs can lower the concentrations of volatile fatty acids and ammonia nitrogen, and increase methane yield.
Article
Green & Sustainable Science & Technology
Zhong Ge, Xiaodong Wang, Jian Li, Jian Xu, Jianbin Xie, Zhiyong Xie, Ruiqu Ma
Summary: This study evaluates the thermodynamic, exergy, and economic performance of a double-stage organic flash cycle (DOFC) using ten eco-friendly hydrofluoroolefins. The influences of key parameters on performance are analyzed, and the advantages of DOFC over single-stage type are quantified.
Article
Green & Sustainable Science & Technology
Nicolas Kirchner-Bossi, Fernando Porte-Agel
Summary: This study investigates the optimization of power density in wind farms and its sensitivity to the available area size. A novel genetic algorithm (PDGA) is introduced to optimize power density and turbine layout. The results show that the PDGA-driven solutions significantly reduce the levelized cost of energy (LCOE) compared to the default layout, and exhibit a convex relationship between area and LCOE or power density.
Article
Green & Sustainable Science & Technology
Chunxiao Zhang, Dongdong Li, Lin Wang, Qingpo Yang, Yutao Guo, Wei Zhang, Chao Shen, Jihong Pu
Summary: In this study, a novel reversible liquid-filled energy-saving window that effectively regulates indoor solar radiation heat gain is proposed. Experimental results show that this window can effectively reduce indoor temperature during both summer and winter seasons, while having minimal impact on indoor illuminance.
Article
Green & Sustainable Science & Technology
Alessandro L. Aguiar, Martinho Marta-Almeida, Mauro Cirano, Janini Pereira, Leticia Cotrim da Cunha
Summary: This study analyzed the Brazilian Equatorial Shelf using a high-resolution ocean model and found significant tidal variations in the area. Several hypothetical barrages were proposed with higher annual power generation than existing barrages. The study also evaluated the installation effort of these barrages.
Article
Green & Sustainable Science & Technology
Francesco Superchi, Nathan Giovannini, Antonis Moustakis, George Pechlivanoglou, Alessandro Bianchini
Summary: This study focuses on the optimization of a hybrid power station on the Tilos island in Greece, aiming to increase energy export and revenue by optimizing energy fluxes. Different scenarios are proposed to examine the impact of different agreements with the grid operator on the optimal solution.
Article
Green & Sustainable Science & Technology
Peimaneh Shirazi, Amirmohammad Behzadi, Pouria Ahmadi, Sasan Sadrizadeh
Summary: This research presents two novel energy production/storage/usage systems to reduce energy consumption and environmental effects in buildings. A biomass-fired model and a solar-driven system integrated with photovoltaic thermal (PVT) panels and a heat pump were designed and assessed. The results indicate that the solar-based system has an acceptable energy cost and the PVT-based system with a heat pump is environmentally superior. The biomass-fired system shows excellent efficiency.
Article
Green & Sustainable Science & Technology
Zihao Qi, Yingling Cai, Yunxiang Cui
Summary: This study aims to investigate the operational characteristics of the solar-ground source heat pump system (SGSHPS) in Shanghai under different operation modes. It concludes that tandem operation mode 1 is the optimal mode for winter operation in terms of energy efficiency.
Article
Green & Sustainable Science & Technology
L. Bartolucci, S. Cordiner, A. Di Carlo, A. Gallifuoco, P. Mele, V. Mulone
Summary: Spent coffee grounds are a valuable biogenic waste that can be used as a source of biofuels and valuable chemicals through pyrolysis and solvent extraction processes. The study found that heavy organic bio-oil derived from coffee grounds can be used as a carbon-rich biofuel, while solvent extraction can extract xantines and p-benzoquinone, which are important chemicals for various industries. The results highlight the promising potential of solvent extraction in improving the economic viability of coffee grounds pyrolysis-based biorefineries.
Article
Green & Sustainable Science & Technology
Luiza de Queiroz Correa, Diego Bagnis, Pedro Rabelo Melo Franco, Esly Ferreira da Costa Junior, Andrea Oliveira Souza da Costa
Summary: Building-integrated photovoltaics, especially organic solar technology, are important for reducing greenhouse gas emissions in the building sector. This study analyzed the performance of organic panels laminated in glass in a vertical installation in Latin America. Results showed that glass lamination and vertical orientation preserved the panels' performance and led to higher energy generation in winter.
Article
Green & Sustainable Science & Technology
Zhipei Hu, Shuo Jiang, Zhigao Sun, Jun Li
Summary: This study proposes innovative fin arrangements to enhance the thermal performance of latent heat storage units. Through optimization of fin distribution and prediction of transient melting behaviors, it is found that fin structures significantly influence heat transfer characteristics and melting behaviors.