Article
Economics
Dario Cottafava, Michele Gastaldo, Francesco Quatraro, Cristina Santhia
Summary: This study focuses on the socioeconomic impact of COVID-19 lockdowns, using Italy as a case study. By using an input-output model, the researchers analyze the economic losses and greenhouse gas emissions reductions caused by the restrictions. The study also proposes different scenarios to highlight the utility of the model in policymaking.
ECONOMIC MODELLING
(2022)
Review
Green & Sustainable Science & Technology
Eskinder Gemechu, Amit Kumar
Summary: Hydropower is an important renewable energy source, but there is controversy over whether it is carbon-neutral like solar and wind power. Research shows that the characteristics of hydropower projects can lead to significant greenhouse gas emissions. This paper reviews the inconsistencies in using life cycle assessment for hydropower projects, particularly in accurately estimating and modeling reservoir greenhouse gas emissions.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Energy & Fuels
Yang Yang, Sai Liang, Yi Yang, Guang Hui Xie, Wei Zhao
Summary: This study evaluated the greenhouse gas emissions of seven corn straw-based bioenergy conversion pathways across 30 provinces in China. It found that the spatial disparity of economic supply chains led to varying emissions levels across provinces, with most pathways showing emission reduction benefits but a few pathways exhibiting emissions in certain provinces. Additionally, the spatial teleconnection of economic supply chains showed that bioenergy production in one province could impact GHG emissions in other provinces.
Article
Chemistry, Physical
Shunichi Hienuki, Haruka Mitoma, Mari Ogata, Izumi Uchida, Shigemi Kagawa
Summary: This study analyzes and compares the energy consumption and GHG emissions of hydrogen and gasoline energy systems over their entire life cycle, finding that hydrogen energy system performs better. The development of hydrogen energy may have positive impacts on future energy systems.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
Haiyan Zhang, Yue Xu, Michael L. Lahr
Summary: Over the past three decades, as China urbanized and its economy grew rapidly, the country's food production and consumption patterns underwent drastic changes, leading to a significant increase in greenhouse gas emissions. This was mainly due to agricultural modernization, shifts in consumption patterns, and a rise in imported meat.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
A. Levasseur, S. Mercier-Blais, Y. T. Prairie, A. Tremblay, C. Turpin
Summary: Hydropower is often seen as a low-carbon electricity source, but the flooding caused by dam construction can lead to an increase in biogenic greenhouse gas emissions, which are often overlooked in life cycle assessments. This study compares different methods to estimate hydropower reservoir emissions and finds that they contribute to a portion of the carbon footprint of electricity distributed in the Canadian province of Quebec.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Engineering, Environmental
Timothy R. Simon, Daniel Inman, Rebecca Hanes, Gregory Avery, Dylan Hettinger, Garvin Heath
Summary: This study compares the carbon impacts of different energy storage technologies and finds that pumped storage hydropower has the lowest life cycle greenhouse gas emissions. The study focuses on the assessment of closed-loop pumped storage hydropower (PSH) in the United States and its global warming potential. The results suggest that closed-loop PSH offers climate benefits over other energy storage technologies.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Public, Environmental & Occupational Health
Minami Sugimoto, Kentaro Murakami, Keiko Asakura, Shizuko Masayasu, Satoshi Sasaki
Summary: By using three different calculation methods, the average daily diet-related greenhouse gas emissions per day for Japanese adults varied significantly. There were also significant differences at the food group level. Regardless of the method used, meat was consistently identified as the top contributor to greenhouse gas emissions.
PUBLIC HEALTH NUTRITION
(2021)
Article
Thermodynamics
Jinrui Zhang, Hans Meerman, Rene Benders, Andre Faaij
Summary: This study evaluated the techno-economic performance and life cycle greenhouse gas emissions of various liquefied natural gas (LNG) supply chains in China, finding that natural gas with full cryogenic carbon dioxide capture is the most beneficial pathway for avoiding GHG emissions and costs. Hydrogen pathways require technology maturity and cost reductions to become attractive.
Article
Engineering, Environmental
Dongxue Li, Yiliu Wang, Dianjun Lu, Xiaoqin Chen, Zhenling Cui, Xinping Chen, Jianwei Lu, Jun Nie, Huoyan Wang, Jianmin Zhou
Summary: Bio-straw is a valuable and renewable organic resource, with the majority of global production taking place in China. The recycling of straw is closely tied to carbon and nitrogen cycles, agricultural productivity, and green development. Through a life cycle assessment and scenario analysis, straw recycling was found to partially alleviate negative potassium surplus and increase yields in wheat, maize, and rice. The recycling also reduced net greenhouse gas (GHG) emissions in wheat and maize, but increased them in rice due to higher methane emissions. Implementing crop-specific recycling targets and combining with optimal fertilizer inputs can further reduce net GHG emissions and contribute to higher crop yields and green development.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Environmental Sciences
Ezequiel M. Arrieta, Milva Geri, Julia Becaria Coquet, Carlos Matias Scavuzzo, Maria Elisa Zapata, Alejandro D. Gonzalez
Summary: The survey revealed inadequate intake of healthy foods and excess of unhealthy nutrients among different socio-economic levels in Argentina, along with high environmental footprints. The Argentinian diet was found to be unhealthy and unsustainable across all socio-economic levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Agronomy
Chaochen Tang, Bingzhi Jiang, Asif Ameen, Xueying Mo, Yang Yang, Zhangying Wang
Summary: Sweet potato plays a significant role in China's agricultural poverty relief strategy, and selecting appropriate cropping systems can achieve energy, economic, and environmental benefits. The comprehensive assessment of diversified sweet-potato-based cropping systems in South China showed that extended rotation systems effectively reduce greenhouse-gas emissions while maintaining or increasing productivity.
Article
Multidisciplinary Sciences
Mohammad S. Masnadi, Giacomo Benini, Hassan M. El-Houjeiri, Alice Milivinti, James E. Anderson, Timothy J. Wallington, Robert De Kleine, Valerio Dotti, Patrick Jochem, Adam R. Brandt
Summary: The expanded use of novel oil extraction technologies has diversified the global oil supply's carbon footprint. Past life-cycle assessment studies have overlooked upstream emission heterogeneity and assumed that a decline in oil demand will displace average crude oil. The study reveals a non-linear relationship between carbon emissions reductions and oil demand reductions, depending on the magnitude of demand drop and the global oil market structure.
Article
Environmental Sciences
Annika Linkhorst, Jose R. Paranaiba, Raquel Mendonca, David Rudberg, Tonya DelSontro, Nathan Barros, Sebastian Sobek
Summary: The study found that in tropical regions, CH4 emissions from reservoirs are primarily through bubble ebullition, with emission levels significantly influenced by spatial and temporal variability. High spatial resolution measurements are crucial for constraining CH4 estimates at the reservoir-wide level, and different upscaling approaches yielded similar results.
GLOBAL BIOGEOCHEMICAL CYCLES
(2021)
Review
Energy & Fuels
C. Oliveira Henriques, S. Sousa
Summary: This paper reviews the Economic Input-Output Life Cycle Assessment (EIO-LCA), one of the underutilized but important approaches in assessing environmental implications of electricity generation. The EIO-LCA analysis, using economic input-output tables and sector-level environmental and energy data, enables comprehensive evaluation of the impacts of all sectors involved in electricity generation. The paper provides an overview of the methodology, its assumptions, and various applications in electricity generation, as well as addressing the issue of disaggregation in the electricity sector.
Article
Thermodynamics
Rajneesh Kumar, Varun Goel, Suvanjan Bhattacharyya, V. V. Tyagi, Abdullah M. Abusorrah
Summary: The performance of a solar air heater can be significantly improved by introducing artificial-roughness over the heat-collector plate. The study conducted provides correlations for Nusselt number and friction factor based on experimental data, showing good agreement with the developed mathematical expressions.
EXPERIMENTAL HEAT TRANSFER
(2022)
Article
Energy & Fuels
Sudhir Kumar Pathak, Ashish Nayyar, Varun Goel
Summary: Research shows that diesel engines can partially replace compressed natural gas to reduce NOx and smoke emissions; in dual fuel mode, the highest reduction rates for NOx and smoke can reach 21% and 18% respectively.
Article
Green & Sustainable Science & Technology
Rajneesh Kumar, Varun Goel
Summary: The study investigates the influence of various roughness elements on the performance of solar air heater, with experiments conducted in a triangular passage solar air heater. Results show that among different geometries, the forward-chamfered rectangular rib has the best thermohydraulic performance parameter.
Article
Green & Sustainable Science & Technology
Varun Goel, Rajneesh Kumar, Suvanjan Bhattacharyya, V. V. Tyagi, Abdullah M. Abusorrah
Summary: This study investigated the impact of using hemispherical dimple-cavities on the flow dynamics in a solar air heater, showing significant changes in Nusselt number and friction factor. The best heat transfer augmentation was observed at the trailing edge, with higher heat transfer efficiency compared to the leading edge. A close fit curve was obtained between the developed correlation and experimental values, with maximum errors of 6.61% and 7.03%, respectively.
Article
Green & Sustainable Science & Technology
Suvanjan Bhattacharyya, Debraj Sarkar, Rahul Roy, Shramona Chakraborty, Varun Goel, Eydhah Almatrafi
Summary: In this study, the heat transfer and thermal performance of solar air-heater tubes with helical corrugation were predicted using a machine learning regression technique. A statistical analysis of heat transfer was conducted by developing an artificial neural network-based machine learning model, which showed high prediction accuracies. The models based on experimental data features provide accurate estimation of experimental output, reducing the time and cost of experiments.
Article
Construction & Building Technology
Dilawar Husain, Ravi Prakash, Akbar Ahmad
Summary: A novel methodology has been developed to assess the overall environmental impact of a building during its lifespan, taking into account various resources used. The study found that the low environmental impact of building materials can reduce the ecological footprint of buildings, and the use of renewable energy can also reduce the operational ecological footprint. It is recommended to assess the ecological footprint of all existing and proposed buildings in order to develop strategies for a sustainable construction sector.
ADVANCES IN CIVIL ENGINEERING
(2022)
Article
Environmental Sciences
Y. Ansari, D. Husain, S. M. Haadi, J. Haloi, R. Prakash
Summary: The rapid growth of the construction sector has a significant impact on natural resource demands, waste assimilation, and environmental pollution. The combination of life cycle assessment and Ecological Footprint analysis allows for measuring the environmental imprint of a building. The study found that the Ecological Footprint of building construction accounts for 15.41% of the total Ecological Footprint of a low-rise building. The operational phase of the building has the highest Ecological Footprint contribution, accounting for 83.67% of the lifecycle phases. Replacing traditional bricks with low environmental impact bricks can reduce the Ecological Footprint of the building.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Thermodynamics
Samar Singhal, Ashwini Kumar Yadav, Ravi Prakash
Summary: In tropical conditions, the temperature exceeding the recommended range in greenhouse is a major concern. This study evaluated the thermal performance of an Earth Air Tunnel Heat Exchanger (EATHE) assisted single span saw-tooth greenhouse using both a developed code and a commercial computer program (ANSYS-Fluent). The effectiveness of coupling EATHE to control the greenhouse temperature was assessed under different scenarios of side vent opening. Air movement caused by wind and stack effect was found to be a significant factor affecting the temperature uniformity within the greenhouse. The best thermal performance for optimum plant growth was achieved when both side vents of the greenhouse were connected to EATHE.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Green & Sustainable Science & Technology
Yakub Ansari, Dilawar Husain, Umesh Kumar Das, Jyotirmoy Haloi, Nasar Ahmad Khan, Ravi Prakash, Mujahid Husain
Summary: Currently, the use of conventional cement in concrete production causes natural resource depletion, CO2 emissions, and energy supply issues. This study proposes using stone dust and water treatment sludge to partially replace cement in M20-grade concrete, reducing the environmental impact. The ecological footprint and sustainability index are used to evaluate the environmental impact of different concrete types. The results show that sun-dried water treatment sludge and stone dust can effectively replace cement without compromising strength, reducing the ecological footprint and enhancing sustainability.
Article
Green & Sustainable Science & Technology
Ravi Prakash, Satyajit Malode, Jagadish Chandra Mohanta, Aakarsh Kumar Dubey, Jatin, Dilawar Husain
Summary: The life cycle water use of coal-based thermal power plants in India was assessed and found to be higher than the global average. To reduce water dependency, an air-cooled condenser with vapor absorption chillers and a seawater cooling-based thermal power generation scheme were proposed.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Thermodynamics
Samar Singhal, Ashwini Kumar Yadav, Ravi Prakash
Summary: The thermal performance of an earth air tunnel heat exchanger (EATHE)-integrated single-span saw-tooth greenhouse (GH) was assessed in peak summer. The results show that EATHE can effectively lower the temperature inside the greenhouse and maintain optimum plant growth temperature. The experimental and simulation results have good agreement.
JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS
(2023)
Article
Environmental Sciences
Satyajit Malode, Ravi Prakash, Jagadish Chandra Mohanta
Summary: In recent years, the focus has been on clean power generation and assessing the environmental impact of pollution control technologies in power plants is crucial. This study uses life cycle assessment (LCA) to evaluate the environmental impacts of coal-fired thermal power plants with different emission control techniques in an Indian scenario. The results showed that power plant operation is the most significant contributor to environmental impact, and a combination of ESP, FGD, SCR, and CCS is favorable for cleaner energy generation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Thermodynamics
Sunil Kumar, Rajneesh Kumar, Varun Goel, Suvanjan Bhattacharyya, Alibek Issakhov
Summary: This study investigates the impact of different roughness geometries on the exergetic efficiency of a solar air heater (SAH), finding that the exergetic efficiency of a semicircular ribbed SAH is 26% higher than that of square roughness. Recommendations are made based on the design plots developed to enhance the efficiency of the SAH.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Green & Sustainable Science & Technology
Ajay Biswas, Dilawar Husain, Ravi Prakash
Summary: This study evaluates the ecological footprint of a grid-connected rooftop solar photovoltaic system in a tropical climate, finding that the environmental impact of solar PV panels accounts for 76% of the total impact, while the ecological footprint per unit electricity generation of the RSPV system is 1.59 x 10(-5) gha/kWh, indicating high ecological benefits.
INTERNATIONAL JOURNAL OF SUSTAINABLE ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Dilawar Husain, Pulkit Garg, Ravi Prakash
Summary: The study presented the Ecological Footprint assessment of four different food products manufactured in an Indian food processing industry and estimated the reduction potential in terms of the EF through the use of sustainable technologies. The focus was on the bio-productive land usage during food processing and the impact of suggested sustainable technologies on the ecological footprint.
INTERNATIONAL JOURNAL OF SUSTAINABLE ENGINEERING
(2021)
