scholarly journals Ca4Sb2O and Ca4Bi2O: Two Promising Mixed-Anion Thermoelectrics

2021 ◽  
Author(s):  
Warda Rahim ◽  
Jonathan Skelton ◽  
David O Scanlon
Keyword(s):  
Global Warming ◽  
Fossil Fuels ◽  
Clean Energy ◽  
Energy Sources ◽  
Environmental Burden ◽  
Widespread Interest

The environmental burden of fossil fuels and the rising impact of global warming have created an urgent need for sustainable clean energy sources. This has led to widespread interest in...

Social, Environmental and Economic Impacts of Adopting Clean Energy Use

2019 ◽  
Vol 11 (4) ◽  
pp. 29-49 ◽  
Author(s):  
Muhammad Razi ◽  
Yousaf Ali
Keyword(s):  
Renewable Energy ◽  
Fossil Fuels ◽  
Energy Use ◽  
Renewable Energy Sources ◽  
Clean Energy ◽  
Energy Sources ◽  
Crucial Issue ◽  
Per Capita ◽  
Social Environmental ◽  
Alternative Solutions

These days, the excessive industrialization, elevated levels of pollution, and the increased energy crisis has led nations towards the use of renewable energy sources. Through the use of renewable energy sources, global warming can also be decreased, which is currently the biggest environmental issue worldwide. Pakistan, being a developing country, relies on the use of fossil fuels for the generation of electricity. The alarming increase in population, energy consumption per capita and energy wastages lead to a shortfall. To resolve this crucial issue, the alternative solutions considered include the use of renewable sources of energy such as hydro, solar and wind. The use of these renewable energy sources is governed by various environmental, economic and social parameters. The influence of these parameters on the use of renewable energy sources is studied through the use of DEMATEL and revised DEMATEL techniques.

ENERGY SECURITY: TODAY AND TOMORROW

2016 ◽  
Vol 4 (2) ◽  
pp. 59 ◽  
Author(s):  
Dr. Babita Srivastava
Keyword(s):  
Global Warming ◽  
Energy Consumption ◽  
Alternative Energy ◽  
Fossil Fuels ◽  
Energy Sector ◽  
Single Step ◽  
Energy Sources ◽  
Fuel Price ◽  
Energy Consuming ◽  
Multiple Challenges

Purpose:To emphasize the importance of renewable and alternative energy, as nations become increasingly reliant on increasingly less available conventional energy sources. Simultaneously, the long-term and detrimental effects of such reliance is explored and quanitified so as to better justify investments into renewable, widely available, and less polluting energy sources.Design/Metholody/Approach:Data is collected from a variety of publicly available sources and their relevance is explored through contrast and comparison. The graphs and data used primarily focus on energy and energy consumption such as fuel pricing and exporting as well as the rate of fuel exporting by various nations.Findings:Based on the data analyzed, through the continuous use of fossil fuels, a country faces multiple challenges: depletion of fossil fuel reserves, global warming, environmental concerns, geopolitical and military conflicts and, of late, a continued and significant fuel price rise. The authors conclude these problems create an unsustainable situation and that without converting their energy sector to at least be in part less reliant on hydrocarbons and similar fuels and more reliant on more widely available and less polluting energy sources such as sunlight or geothermal energy a nation will inevitably face a catastrophic collapse of their energy sector.Research Limitations/Implications:Without cooperation of the governments of leading energy consuming nations in redeveloping their energy sector based on this or similar research, little of what has been explored can be widely applied. Consequently, the conclusions of this paper represent a single step in the process of redefining worldwide energy consumption rather than giving an explicit answer. Further research will be needed in order to most fully present an effective argument to the public sector, the private sector, and the common citizen that energy habits must be changed.Originality/value:The conclusions reached are an essential part to understanding the wide reaching effects of the world’s current energy habits. With the ever increasing threat of global warming, emptying fuel reserves, and unnecessary polluting and waste habits of most nation’s energy sectors, this research, along with the cited data, can aid in the redirection of such energy habits before a point of no return. 

1. What are renewables?

2020 ◽  
pp. 1-15
Author(s):  
Nick Jelley
Keyword(s):  
Climate Change ◽  
Global Warming ◽  
Renewable Energy ◽  
Mass Production ◽  
Fossil Fuels ◽  
Industrial Revolution ◽  
18Th Century ◽  
Clean Energy ◽  
The World ◽  
History Of

‘What are renewables?’ defines renewable energy and provides a brief history of its use. It focuses on energy generated by solar, wind, and hydropower. These energy sources are renewable, in the sense that they are naturally replenished within days to decades. Only a few years ago, giving up our reliance on fossil fuels to tackle global warming would have been very difficult, as they are so enmeshed in our society and any alternative was very expensive. Nearly all of the sources of energy up to the 18th century were from renewables, after which time the world increasingly used fossil fuels. They powered the industrial revolution around the globe, and now provide most of our energy. But this dependence is unsustainable, because their use causes global warming, climate change, and pollution. Other than hydropower, which grew steadily during the 20th century and now provides almost a sixth of the world’s electricity demand, renewable energy was a neglected resource for power production for most of this period, being economically uncompetitive. But now, renewables are competitive, particularly through the support of feed-in tariffs and mass production, and governments are starting to pay more attention to clean energy, as the threat of climate change draws closer. Moving away from fossil fuels to renewables to supply both heat and electricity sustainably has become essential.

scholarly journals Nanomaterials for photocatalytic hydrogen production: from theoretical perspectives

RSC Advances ◽  
2017 ◽  
Vol 7 (55) ◽  
pp. 34875-34885 ◽  
Author(s):  
Mahesh Datt Bhatt ◽  
Jae Sung Lee
Keyword(s):  
Global Warming ◽  
Hydrogen Production ◽  
Clean Energy ◽  
Energy Sources ◽  
High Demand ◽  
Photocatalytic Hydrogen Production ◽  
Theoretical Perspectives ◽  
Increasing Demand

To overcome the increasing demand of energy worldwide and global warming due to CO2emissions from the use of traditional fuel sources, renewable and clean energy sources are in high demand.

scholarly journals The Great Drama, Global Warming and Its Mechanism

2020 ◽  
Vol 7 (2) ◽  
pp. 29
Author(s):  
Jan-Erik Lane
Keyword(s):  
Earth Sciences ◽  
Global Warming ◽  
Renewable Energy ◽  
Co2 Emissions ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
The Earth ◽  
Coal Power

Well-known professor Johan Rockström at Stockholm University claims that we are in control of things, now that the Earth Sciences have proven the biological  limits of our existing civilisations. But we do not know or have not begun the necessary large global adjustments towards a sustainable Planet Earth. The failure of the UN COP framework is blatant stating the ends but not the means of reducing significantly CO2 emissions. All major countries plan for much more energy in coming decades treating renewable energy sources as merely compliment to fossil fuels,  not substitutes. To accomplish the Paris Accord objevties (COP 21), coal power should be phased out.

A Study of Green and Risk-Resilient Supply Chain Strategy

2021 ◽  
pp. 100-127
Author(s):  
Renuka Deshmukh
Keyword(s):  
Water Pollution ◽  
Global Warming ◽  
Renewable Energy Sources ◽  
Rapid Development ◽  
Clean Energy ◽  
Environmental Problems ◽  
Social Progress ◽  
Energy Sources ◽  
Supply Chain Strategy ◽  
Global Problems

With the rapid development of the economy, environmental problems have become increasingly prominent. Environmental pollution and degradation have become global problems. Environmental problems, such as global warming, ozone depletion, smog, and water pollution, have largely affected economic development and social progress for the next generations. With the increase in the number of people and the consumption of resource-based companies, coal, oil, natural gas, and other non-renewable energy sources are gradually decreasing or even being depleted. The use of these non-clean energy sources exacerbates the deterioration of the environment.

scholarly journals Review of Anodic Catalysts for SO2 Depolarized Electrolysis for “Green Hydrogen” Production

Catalysts ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 63 ◽  
Author(s):  
Sergio Díaz-Abad ◽  
María Millán ◽  
Manuel A. Rodrigo ◽  
Justo Lobato
Keyword(s):  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Cell Voltage ◽  
Water Electrolysis ◽  
Clean Energy ◽  
Primary Energy ◽  
Energy Sources ◽  
Electrolysis Cell ◽  
Advantages And Disadvantages ◽  
Near Future

In the near future, primary energy from fossil fuels should be gradually replaced with renewable and clean energy sources. To succeed in this goal, hydrogen has proven to be a very suitable energy carrier, because it can be easily produced by water electrolysis using renewable energy sources. After storage, it can be fed to a fuel cell, again producing electricity. There are many ways to improve the efficiency of this process, some of them based on the combination of the electrolytic process with other non-electrochemical processes. One of the most promising is the thermochemical hybrid sulphur cycle (also known as Westinghouse cycle). This cycle combines a thermochemical step (H2SO4 decomposition) with an electrochemical one, where the hydrogen is produced from the oxidation of SO2 and H2O (SO2 depolarization electrolysis, carried out at a considerably lower cell voltage compared to conventional electrolysis). This review summarizes the different catalysts that have been tested for the oxidation of SO2 in the anode of the electrolysis cell. Their advantages and disadvantages, the effect of platinum (Pt) loading, and new tendencies in their use are presented. This is expected to shed light on future development of new catalysts for this interesting process.

scholarly journals Causality between CO2 Emissions and Stock Markets

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2893 ◽  
Author(s):  
Chia-Lin Chang ◽  
Jukka Ilomäki ◽  
Hannu Laurila ◽  
Michael McAleer
Keyword(s):  
Global Warming ◽  
Stock Returns ◽  
Granger Causality ◽  
Co2 Emissions ◽  
Fossil Fuels ◽  
Oil And Gas ◽  
Energy Sources ◽  
Causality Test ◽  
Gas Combustion ◽  
Stock Market Returns

It is generally accepted in the scientific community that carbon dioxide (CO2) emissions, which lead to global warming, arise from using fossil fuels, namely coal, oil and gas, as energy sources. Consequently, alleviating the effects of global warming and climate change necessitates substantial reductions in the use of fossil fuel energy. This paper uses a financial market-based approach to investigate whether positive stock returns cause changes in CO2 emissions, or vice-versa, based on the Granger causality test to determine cause and effect, or leader and follower. If Granger causality can be determined in any direction, this will enable a clear directional statement regarding temporal predictability between stock returns and CO2 emissions. The empirical data include annual CO2 emissions from fuel combustion of the three main fossil energy sources, namely coal, oil and gas, based on 18 countries with sophisticated financial markets that are in the Morgan Stanley Capital International (MSCI) World Index from 1971 to 2017. The empirical results show clearly that all the statistically significant causality findings are unidirectional from the stock market returns to CO2 emissions from coal, oil and gas, but not the reverse. More importantly, the regression results suggest that when stock returns rise by 1%, CO2 emissions from coal combustion decrease by 9% among the countries that are included in MSCI World Index. Furthermore, when stock returns rise 1%, CO2 emissions from oil combustion increase by 2%, but stock returns have no significant effect on CO2 emissions from gas combustion.

Diffusion, Transport and Water Absorption Properties of Eco-Friendly Polymer Composites

2019 ◽  
Vol 23 ◽  
pp. 222-231
Author(s):  
Mehmet Harbi Calimli ◽  
Busra Balli ◽  
Esra Kuyuldar ◽  
Fatih Sen
Keyword(s):  
Fuel Cells ◽  
Water Absorption ◽  
Polymer Composites ◽  
Fossil Fuels ◽  
Polymer Electrolyte Membrane ◽  
Clean Energy ◽  
Energy Sources ◽  
Absorption Properties ◽  
Diffusion Transport ◽  
Sustainable Resources

The availability of sustainable and environmentally friendly energy sources is one of the biggest challenges faced by scientists and engineering communities. First of all, the fossil fuels used to meet existing energy demands cause the depletion of resources, the increase of greenhouse gas emissions, and eventually destruction of nature. Polymers have many industrial application areas due to the ease of processing, the reasonable price and the ability to modify with the desired features. Biopolymers have become a focus of attention in terms of the polymer sector because biomass can be separated into harmless products such as CO2 and H2O in the natural environment and can have sustainable resources. The studies on biomass and hydrogen fuel cells are more advantageous than other alternative and clean energy sources because they have the continuous energy supply, compact design, and wide application areas without being dependent on nature. In practice, the polymer electrolyte membrane fuel cells are pinched among the other fuel cells. For this purpose, in this chapter diffusion, transport and water absorption properties of eco-friendly polymer composites generally used are discussed.

scholarly journals POTENTIAL OF AGROENERGY RESIDUES FOR THE GENERATION OF BIOGS IN THE STATE OF TOCANTINS

2019 ◽  
Vol 34 (01) ◽  
pp. 67-81
Author(s):  
Denise Domingos dos Santos Martins ◽  
Juan Carlos Valdés Serra
Keyword(s):  
Exploratory Study ◽  
Fossil Fuels ◽  
Clean Energy ◽  
The State ◽  
Energy Sources ◽  
Energy Potential ◽  
Fossil Energy ◽  
Generation Capacity ◽  
Alternative Sources ◽  
Interesting Alternative

Concerns over the depletion of traditional fossil energy sources and the consequent greenhouse effect generated by the use of fossil fuels have increased, creating a need to search for alternative sources of clean energy. Thus, this work had the objective of portraying the potential of residues from agroenergy in the State of Tocantins for generation of Biogas. This article was developed under the principle of the exploratory study, through data surveys from the State. The agroenergy residues researched were soybean, cassava (manioc), rice, sugarcane, maize, sorghum and beans. The energy potential of the studied  residues represents 3.56% of the energy generation capacity by biomass sources. The source of highest agroenergy potential for biogas generation was maize, with an energy capacity of 498.90 MW. The use of biomass as an energy source presents itself as an interesting alternative in the survey carried throughout this work.

Sign in / Sign up

Export Citation Format

Share Document