scholarly journals Analysis of Performance, Emission and combustion characteristics of a single cylinder VCR engine when run on blends of 1-octanol and Diesel

2021 ◽  
Author(s):  
Ashish Kumar Singh ◽  
◽  
Amardeep Amardeep ◽  
Vinod Kumar Yadav ◽  
◽  
...  
Keyword(s):  
Fossil Fuels ◽  
Fossil Fuel ◽  
Crude Petroleum ◽  
Heating Value ◽  
Single Cylinder ◽  
The Past ◽  
Alternate Fuel ◽  
The World ◽  
Variable Compression Ratio Engine ◽  
Analysis Of Performance

Phenomenal Changes are taking place in the world. The energy consumption of the country has grown many folds over the past few years, thereby putting pressure on the fossil fuel reserves. Though, recently due to COVID-19, the price of crude oil has fallen since few months but it would again rise which would lead to heavy expenditure over imports of crude petroleum. Also the fossil fuels increase the problem of global warming and carbon emissions. Alternate fuel such as alcohols poses a sustainable alternative solution of the problem. In the present investigation, Blends of 1-octanol are formed with neat diesel i.e. OC-5, OC-10, OC-15 & OC-20 and analyzed for efficiency, fuel economy and effluents of the single cylinder variable compression ratio engine. It was perceived that there was increment in viscosity of the blends containing n-octanol while the heating value lowered by increasing the absorption of 1-octanol. The peak BTE and lowest fuel consumption was found to be with blend containing 20% 1-octanol. Lower CO and UBHC emissions were reported with the addition of 1-octanol in the different blends formed.

FOSSIL FUEL ENVIRONMENTAL CONTAMINATION: A STRATEGY USING RADIOCARBON, N-ALKANES, AND ALGAE

Radiocarbon ◽  
2021 ◽  
pp. 1-9
Author(s):  
Túlio César Aguiar Silva ◽  
Carla Carvalho ◽  
Bruno Libardoni ◽  
Kita Macario ◽  
Felippe Braga de Lima ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Environmental Contamination ◽  
Aquatic Ecosystems ◽  
Fossil Fuels ◽  
Fossil Fuel ◽  
Maximum Intensity ◽  
Effective Technique ◽  
The World ◽  
Work Samples

ABSTRACT Fossil fuels are of utmost importance to the world we live in today. However, their use can cause major impacts on the environment, especially on water resources. In this regard, algae have been intensively used as a strategy for remediation and monitoring of environmental pollution due to its efficient absorption of contaminants. In this work, samples of seaweed collected in Niterói/RJ—contaminated with kerosene and diesel—were analyzed by radiocarbon (14C) accelerator mass spectrometry (AMS) and by n-alkane quantification with gas chromatography to evaluate bioaccumulation in function of the dosage of contaminants. The biogenic content measured by radiocarbon analysis resulted in 95.6% for algae contaminated with 10 mL of kerosene and 67.6% for algae contaminated with 10 mL of diesel. The maximum intensity of n-C17 n-alkane in algae with 5 mL, 10 mL, and 15 mL of diesel was 768.2, 1878.1, and 5699.2 ng.g-1, respectively. While the maximum concentration of n-C27 in algae with 5 mL, 10 mL and 15 mL of kerosene was 3.3, 35.9, and 150.3 ng.g-1. We concluded that, for both contaminants, their incorporation into algae increases as the contamination dosage increases, making this methodology an effective technique for monitoring and remediation of urban aquatic ecosystems.

scholarly journals Catalytic Production of Jet Fuels from Biomass

Molecules ◽  
2020 ◽  
Vol 25 (4) ◽  
pp. 802 ◽  
Author(s):  
Manuel Antonio Díaz-Pérez ◽  
Juan Carlos Serrano-Ruiz
Keyword(s):  
Molecular Weight ◽  
Global Warming ◽  
Natural Gas ◽  
Heterogeneous Catalysts ◽  
Fossil Fuels ◽  
Fossil Fuel ◽  
Liquid Hydrocarbon ◽  
Jet Fuels ◽  
Renewable Source ◽  
The World

Concerns about depleting fossil fuels and global warming effects are pushing our society to search for new renewable sources of energy with the potential to substitute coal, natural gas, and petroleum. In this sense, biomass, the only renewable source of carbon available on Earth, is the perfect replacement for petroleum in producing renewable fuels. The aviation sector is responsible for a significant fraction of greenhouse gas emissions, and two billion barrels of petroleum are being consumed annually to produce the jet fuels required to transport people and goods around the world. Governments are pushing directives to replace fossil fuel-derived jet fuels with those derived from biomass. The present mini review is aimed to summarize the main technologies available today for converting biomass into liquid hydrocarbon fuels with a molecular weight and structure suitable for being used as aviation fuels. Particular emphasis will be placed on those routes involving heterogeneous catalysts.

scholarly journals Unconventionals in Europe: Best Practice vs. Worst Case - The Conflict Between Facts and Public Perception

2016 ◽  
Vol 23 (3) ◽  
pp. 377-386 ◽  
Author(s):  
Peter Burri
Keyword(s):  
Natural Gas ◽  
Public Perception ◽  
Human Error ◽  
Fossil Fuels ◽  
Fossil Fuel ◽  
Hydrocarbon Exploration ◽  
Negative Consequences ◽  
Rapid Improvement ◽  
Worst Case ◽  
The World

Abstract In spite of great progress in energy efficiency and in the development of renewable energy the world is likely to need significant amounts of fossil fuel throughout this century and beyond (the share of fossil fuels in the world mix has remained at about 86% of primary energy from 1990 to today). Gas, being the by far cleanest fossil fuel is the ideal bridging fuel to a world with predominantly renewable supplies. Thanks to the recent perfection of unconventional technologies there is no shortage of gas for this bridging function for at least the next 100-200 years. EASAC and several other European Institutions, notably the German Academy of Technical Sciences (acatech) have in the last few years carried out expert studies to assess the alleged environmental risks of unconventional hydrocarbon exploration and production. All these studies have, in agreement with other competent studies worldwide, come to the conclusion that there exists no scientific reason for a ban on hydraulic fracturing. With good practices, clear standards and adequate control the method causes no enhanced risks to the environment or the health of humans. Special attention has to be paid to the surface handling of drilling and fracking fluids. In Europe alone many thousand frac jobs have been carried out by the industry in the last 60 years without any severe accidents. The mishaps in North America have largely been the cause of unprofessional operations and human error. Especially in places with high air pollution, like many megacities of Asia, natural gas has to be seen as a unique chance to achieve a rapid improvement of the air quality and a significant reduction of CO2 emissions. This is also true for Europe where especially the use of domestic natural gas brings important benefits to the environment. The alternative to gas is in many regions of the world an increased consumption of coal, with all negative consequences.

scholarly journals Influence of injection timing on the performance, emissions, combustion analysis and sound characteristics of Nerium biodiesel operated single cylinder four stroke cycle direct injection diesel engine

2010 ◽  
Vol 7 (1) ◽  
pp. 201-207 ◽  
Author(s):  
S. Prabhakar ◽  
V. N. Banugopan ◽  
K. Annamalai ◽  
P. Sentilkumar ◽  
G. Devaradjane ◽  
...  
Keyword(s):  
Fossil Fuel ◽  
Direct Injection ◽  
Injection Timing ◽  
Emission Characteristics ◽  
Single Cylinder ◽  
Performance And Emission ◽  
Oil Blends ◽  
Alternate Fuel ◽  
Stroke Cycle ◽  
Selection Of

The automobile sector which is growing day to day consumes the fossil fuel more than its growth. So there is a demand for exploring new sources of fuels for existing engines. This led to the growth in bio diesels which is an alternate fuel. An alternative fuel must be technically feasible, economically competitive, environmentally acceptable, and readily available. In this project esterified Nerium oil is used as an alternate fuel. A single cylinder stationary kirloskar engine is used to compare the performance and emission characteristics between pure diesel and Nerium blends. In this project selection of suitable nerium blend and selection of optimized injection timing for the blend is done. The Nerium oil blends are in percentage of 20%, 40%, 60%, 80%, and 100% of Nerium oil to 80%, 60%, 40%, 20% & 0% of diesel. From this project it is concluded that among all nerium and diesel blends 20% of nerium and 80% of diesel blend at 30º BTDC gives better performance nearing the diesel. When comparing the emission characteristics HC, CO is reduced when compared to diesel, however NOx emission is slightly increased when compared to diesel. Hence Nerium blend can be used in existing diesel engines with minimum modification in the engine. It also describes the usage of non-edible oil to a greater extent.

scholarly journals Catalysts for Biodiesel Production: A Review

2021 ◽  
Vol 33 (9) ◽  
pp. 1985-1999
Author(s):  
K.A.V. Miyuranga ◽  
D. Thilakarathne ◽  
Udara S.P.R. Arachchige ◽  
R.A. Jayasinghe ◽  
N.A. Weerasekara
Keyword(s):  
Energy Demand ◽  
Fossil Fuels ◽  
Reaction Rate ◽  
Fossil Fuel ◽  
Sustainable Energy ◽  
Biodiesel Production ◽  
Energy Sources ◽  
World Population ◽  
Economic Issues ◽  
The World

As the world population and modernization increase, energy demand increases. One of the non-sustainable energy sources is fossil fuels. However, fossil fuel consumption raises various environmental and economic issues. Most of the studies focus on sustainable energy sources, which can replace fossil fuel dependence. Biodiesel is an alternative sustainable fuel for diesel power. Biodiesel can produce through the transesterification process. Since the catalyst plays a significant role in the biodiesel yield during a defined reaction time, the addition of a catalyst can increases the reaction rate. This article is outlined the several catalysts used by multiple researchers over the years to increase biodiesel yields.

scholarly journals The Effect of Optimal Use of Soil on Sustainability of Iranian Desert Buildings with Iranian Sustainable Architecture Approach

2019 ◽  
Vol 30 ◽  
pp. 165-181
Author(s):  
Lida Hosseinzadeh
Keyword(s):  
Sustainable Development ◽  
Research Method ◽  
Fossil Fuels ◽  
Vernacular Architecture ◽  
Thermal Capacity ◽  
Sustainable Architecture ◽  
The Past ◽  
Library Research ◽  
The World ◽  
Original Type

In the past architecture of Iran, traditional architects had been able to provide comfort for residents through the smart use of architectural materials and strategies. Soil architecture is the most original type of Iranian architecture and the use of soil with characteristics such as high thermal capacity and thermal latency is at the cutting edge of this field in energy consumption and the pursuit of sustainable architecture in the world. This type of architecture not merely in the form of constructing a building in a single ground, but it has been united proportional to the scale and location of the project on the ground and an indivisible part of it. The research method adopted in this paper is based on text studies and the use of visual documents in the context of library research and descriptive-analytical method. In this research, a comparative study of the principles of sustainability with the vernacular architecture of Iran and the sustainable elements, including Shaw Shawādān, sunken gardens and etc. have been addressed in traditional Iranian architecture. The results of these studies show that desirable solutions derived from this vernacular architecture for achieving sustainable architecture can be presented for reducing fossil fuels and as a result reducing contamination that plays a significant role in these issues and the issue of sustainable development.

Energy and the Complexity of International Order

2021 ◽  
pp. 1-22
Author(s):  
Thomas Oatley
Keyword(s):  
Industrial Policy ◽  
Fossil Fuels ◽  
Fossil Fuel ◽  
International Order ◽  
The Political ◽  
Agricultural Systems ◽  
The Past ◽  
Political Incentives ◽  
Green Industrial Policy

Abstract This article explores the role of states and industrial policy in shaping the historical coevolution of energy and international order. I explore how states, by narrowly self-interested pecuniary goals, the desire for geopolitical advantage, and concerns about the political ramifications of domestic economic structure, use industrial policy to encourage the development of energy-intensive transportation and agricultural systems. Over time, increasingly energy-intensive systems allowed an increasingly complex international order to develop, one characterized by significant differentiation and specialization organized over a geographically expansive area. This contemporary complex order is dependent on fossil fuels. I argue that states retain geopolitical and domestic political incentives to use green industrial policy to develop the technologies needed to transition away from this fossil fuel dependence, but industrial policy today faces greater challenges than it did in the past.

scholarly journals Traversing the mountaintop: world fossil fuel production to 2050

2009 ◽  
Vol 364 (1532) ◽  
pp. 3067-3079 ◽  
Author(s):  
Richard Nehring
Keyword(s):  
Energy Demand ◽  
Energy Production ◽  
Fossil Fuels ◽  
Fossil Fuel ◽  
Past Century ◽  
World Population ◽  
Fuel Production ◽  
Half Century ◽  
The Past ◽  
Per Capita

During the past century, fossil fuels—petroleum liquids, natural gas and coal—were the dominant source of world energy production. From 1950 to 2005, fossil fuels provided 85–93% of all energy production. All fossil fuels grew substantially during this period, their combined growth exceeding the increase in world population. This growth, however, was irregular, providing for rapidly growing per capita production from 1950 to 1980, stable per capita production from 1980 to 2000 and rising per capita production again after 2000. During the past half century, growth in fossil fuel production was essentially limited by energy demand. During the next half century, fossil fuel production will be limited primarily by the amount and characteristics of remaining fossil fuel resources. Three possible scenarios—low, medium and high—are developed for the production of each of the fossil fuels to 2050. These scenarios differ primarily by the amount of ultimate resources estimated for each fossil fuel. Total fossil fuel production will continue to grow, but only slowly for the next 15–30 years. The subsequent peak plateau will last for 10–15 years. These production peaks are robust; none of the fossil fuels, even with highly optimistic resource estimates, is projected to keep growing beyond 2050. World fossil fuel production per capita will thus begin an irreversible decline between 2020 and 2030.

scholarly journals Biogas and Biodiesel: Fuels for the New Millennium

2002 ◽  
Vol 1 (1) ◽  
pp. 46-56
Author(s):  
Jitendra Prakash
Keyword(s):  
South Africa ◽  
Power Generation ◽  
Adverse Effect ◽  
Energy Production ◽  
Fossil Fuels ◽  
The Past ◽  
The World ◽  
Alternative Sources ◽  
Biodiesel Fuels ◽  
Biological Wastes

The rapid depletion of fossil fuels and their adverse effect on the environment have led scientists to look for alternative sources and technologies of energy production. India took the lead in utilising biological wastes for the production of 'biogas' with varied applications like cooking and power generation. South Africa first used transesterified vegetable oil as 'biodiesel' to power vehicles. With the numerous benefits to mankind and environment, the use of biological fuels is gaining momentum throughout the world. With a little more streamlining, biofuels will be soon replacing the existing fuel sources, at the same time helping us to rectify the thoughtless exploitation of the past.

scholarly journals “Design of Automatic Organic Waste Shredder for Composting”

2020 ◽  
Vol 8 (6) ◽  
pp. 899-902
Keyword(s):  
Climate Change ◽  
Global Warming ◽  
Fossil Fuels ◽  
Organic Waste ◽  
Fossil Fuel ◽  
Natural Process ◽  
The World ◽  
Chemical Inputs ◽  
Solar Powered ◽  
Harmful Effects

Developing means of farming and agriculture is the reason humans live in the world they do today. It is a necessary means of survival, without which there would be famines all over the world. For thousands of years, agricultural was a natural process that did not harm the land it was done on. Environmental impacts caused due to the harmful effects of human activities are a worldwide problem causing global warming and climate change. Too much dependence on the usage of chemical inputs and the burning of farm wastes was identified as the major ones. Since this issues are threat to mankind and to the existing agriculture equipment’s and the shredder machine is one among them. The machines available in the market are powered via fossil fuels which is also contributing to global warming, this directed the researchers to design and develop a Solar-Powered Shredder machine which can be efficiently operated using solar energy without the dependency on fossil fuel. This project aims at providing solar powered automatized vertical shredder machine to our farmers that is compact and can be operated by using solar.

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