scholarly journals BIOFUELS FROM ALGAE AS A DIRECTION FOR THE DEVELOPMENT OF THE «GREEN» ECONOMY: THE CURRENT STATE AND PROSPECTS

2021 ◽  
pp. 21-36
Author(s):  
Hanna SHEVCHUK
Keyword(s):  
Alternative Energy ◽  
Alternative Fuels ◽  
Biodiesel Production ◽  
Biofuel Production ◽  
Basic Knowledge ◽  
Energy Sources ◽  
Third Generation ◽  
Current State ◽  
Algae Biofuel ◽  
The Impact

The article describes environmental aspects of the impact of traditional energy sources on the environment. It is substantiated that energy needs and environmental problems lead to the search for alternative renewable fuels. A comparative analysis of the structure of general supply between traditional and alternative energy sources is done. The current state of production and use of traditional fuels and prospects for the production of biofuels in Ukraine are analyzed. The projected structure of the use of traditional and alternative fuels according to the Energy Strategy of Ukraine until 2035 «Safety, energy efficiency, competitiveness» is presented. The classification of biofuels is provided depending on raw materials: first, second and third generation. Unlike biofuels from crops such as sugar cane and corn (first-generation biofuels), as well as animal and vegetable wastes (second-generation), algae-derived fuels (third-generation biofuels) have many benefits. In particular, this is a greater potential for biofuel production compared to previous systems: a variety of possible fuels (biodiesel, bioethanol, biobutanol, biogas and even jet fuel); flexible production technologies. Algae cultivation technologies have been studied: especially cultivation in open reservoirs or in more advanced closed ponds and bioreactors. It is substantiated that algae are most often used for biodiesel production; a comparison of different technologies for its production is made. The foreign experience of algae biofuel production and its usage by various automobile companies and enterprises, as well as the prospects of algae biofuel production in Ukraine are presented. Despite the prospects for the production of the third-generation biofuels, there we think, that the issue of investigation has been not been studied properly by scientists and Ukrainian producers don’t have basic knowledge.

WIND-DIESEL INSTALLATIONS FOR ISOLATED FAR NORTH AREAS

2020 ◽  
Author(s):  
Александр Григорьевич Комков ◽  
Александр Константинович Сокольский
Keyword(s):  
Energy Supply ◽  
Alternative Energy ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Economic Potential ◽  
Far North ◽  
Alternative Energy Sources ◽  
Current State ◽  
Solar Power Plants

В статье рассмотрено современное состояние энергоснабжения и перспективы развития альтернативных источников энергии на территории Крайнего Севера. Отмечено, что несмотря на острую потребность во внедрении возобновляемых источников энергии, установленные мощности всех ветряных и солнечных электростанций в регионе не превышают 7-8 МВт. Также в работе рассчитаны технический и экономический потенциал ветровой энергии региона, на основании которых подобрана наиболее эффективная установка. The article discusses the current state of energy supply and the prospects for the development of alternative energy sources in the Far North. It is noted that despite the urgent need for the introduction of renewable energy sources, the installed capacities of all wind and solar power plants in the region do not exceed 7-8 MW. Also, the technical and economic potential of the region’s wind energy was calculated based on which the most efficient installation was selected.

scholarly journals ECONOMICS AND RISK MANAGEMENT OF BIOFUEL PRODUCTION IN AGRICULTURE

2021 ◽  
Vol 2 (37) ◽  
pp. 271-279
Author(s):  
I. Perevozova ◽  
Iu. Samoilyk ◽  
О. Radchenko ◽  
N. Shportiuk ◽  
M. Demydova
Keyword(s):  
Risk Management ◽  
Alternative Fuels ◽  
Production Management ◽  
Jel Classification ◽  
Climatic Conditions ◽  
Biofuel Production ◽  
Limit Values ◽  
Agricultural Enterprises ◽  
The Cost ◽  
The Impact

Abstract. The development of the biofuel market in the world has a positive dynamic for growth. The substantiation of the directions of further improvement of the methodology of production management of alternative fuels is taking into account the policy of climate change and the possibility of reducing dependence on external suppliers of traditional fuels. Ukraine has favorable natural and climatic conditions for the development of production of non-traditional fuels. The most common crops that can be grown in Ukraine for biofuels are rapeseed and corn. Based on the material and technical base and production conditions, rapeseed is the best crop for cultivation. Therefore, the object that we have chosen for this study is the production of biodiesel, which does not require significant capital expenditures by agricultural enterprises. For the purposes of the study, the risks were grouped according to various classification criteria (operational and production; marketing; financial; legal and infrastructural; weather; environmental) and the weights of their impact on the performance of agricultural enterprises. The structural scheme of the algorithm of the automated estimation of influence of risk factors for development of bases of the analysis and management of risks of production of biodiesel is constructed. The author's method of calculating the impact of the risk complex takes into account the limit values of the intervals of fuzzy quantities. To preserve soil fertility and reduce the corresponding risks, the proportion of rapeseed in growing areas should be at the limit of 17—18% (when also growing sunflower the upper limit is 12%), then all three analyzed farms can not only use their own land for rapeseed crops, but also, if necessary, rent the necessary plot, or, according to the results of the relevant analysis, its part. In some cases, farms even purchase some of the seeds needed to load the equipment. The results of calculations of the cost of production of biofuels showed that the increase in the cost for small and medium producers is not significant compared to large producers. Keywords: biofuels, biodiesel, risk management, agricultural enterprises, risk management, efficiency. JEL Classification O13, Q42 Formulas: 6; fig.: 1; tabl.: 5; bibl.: 19.

scholarly journals The impact of metal hydride material activation to storage percentage of hydrogen in this material

2020 ◽  
Vol 8 (1) ◽  
pp. 25-31
Author(s):  
Lubica Bednarova ◽  
Tomáš Brestovič ◽  
Natália Jasmisnká ◽  
Marián Lázár ◽  
Romana Dobáková ◽  
...  
Keyword(s):  
Metal Hydride ◽  
Alternative Energy ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Absorption Process ◽  
Absorption Properties ◽  
High Pressure And Temperature ◽  
Alternative Energy Sources ◽  
The World ◽  
The Impact

Currently, a lot of focus is dedicated to metal hydride alloy and options of their utilization. Mankind must solve energy problems due to constant population growth and use of non-renewable energy sources. The World resources of oil are limited and therefore the mankind must start utilizing the alternative energy sources for example hydrogen. Its known that the hydrogen can be stored by metal hydride alloys what it represents the safety way of storage with absence high pressure and temperature. The process by produce of the alloy with good absorption properties the research does not end. Some alloy absorbs the hydrogen after they produce immediately, however a lot of them need the activation for improvement or starting absorption process. Process of activation is very important for achieving the maximum capacity at moderate temperature.

scholarly journals Renewable electricity in Western Balkans: Support policies and current state

2018 ◽  
Vol 22 (6 Part A) ◽  
pp. 2281-2296
Author(s):  
Nikola Rakic ◽  
Dusan Gordic ◽  
Vanja Sustersic ◽  
Mladen Josijevic ◽  
Milun Babic
Keyword(s):  
Renewable Energy ◽  
Electricity Market ◽  
Electricity Generation ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Western Balkans ◽  
Renewable Electricity ◽  
Current State ◽  
Balkan Countries ◽  
The Impact

The use of renewable energy sources for electricity generation in the Western Balkan countries is analyzed in this review paper. Since those countries are part of EU or intend to be, data for Western Balkan are also compared with data for EU-28. The first part of the paper presents a brief overview of main promotion mechanism for electricity generation from renewable energy sources. As a dominant support policy, the feed-in tariff is more elaborated as an incentive measure and a de?tailed overview of the amount of tariffs and quotas for dominant technologies in the Western Balkan countries is presented. Furthermore, the current state of installed capacities and annual productions of three particular renewable electricity technologies (small hydro power, wind power, and solar photovoltaic) are analyzed in detailes. Based on presented data, there is a discussion and consideration of the impact of incentive measures on the electricity market and power production from renewable sources.

scholarly journals Potential of renewable sources in Ukraine

2021 ◽  
pp. 25-31
Author(s):  
Andrii Doronin ◽  
Olena Polishchuk ◽  
Vitalii Rybchak
Keyword(s):  
Alternative Energy ◽  
Alternative Fuels ◽  
Financial Economic ◽  
Oil Products ◽  
Energy Sources ◽  
Product Substitution ◽  
Joint Actions ◽  
Foreign Experience ◽  
Alternative Energy Sources ◽  
Market Relations

Bearing in mind a serious dependence of Ukraine on the import of oil products, it is of great significance for Ukraine to develop own manufacture and to increase the share of oil product substitution with biofuel. It is not possible to develop biofuel market without solving a number of economic and organizational problems, which is why it is expedient to introduce financial-economic stimuli for biofuel producers and to build a stable demand for alternative kinds of fuel. In Ukraine the manufacture of alternative fuels almost terminated, however the solution of the problem of biofuel manufacture will depend on the coordination of joint actions of the state, participants of market relations and the development of the system of measures aimed at the creation of pre-conditions to enhance a competitive biofuel market in Ukraine, taking into consideration foreign experience and current tendencies of the manufacture and use of the alternative energy sources.

scholarly journals EDITORIAL

2007 ◽  
Vol 6 (1) ◽  
pp. 02
Author(s):  
J. V. C. Vargas
Keyword(s):  
Diesel Fuel ◽  
Sugar Cane ◽  
Alternative Fuels ◽  
Fossil Fuels ◽  
Biodiesel Production ◽  
Biofuel Production ◽  
Global Demand ◽  
Oil Productivity ◽  
Carbon Neutral ◽  
Near Future

Fossil fuels are currently recognized as unsustainable because of depleting supplies and the contribution of these fuels to the accumulation of carbon dioxide in the environment. Therefore, renewable, carbon neutral, alternative fuels are necessary for environmental and economic sustainability. Several countries have been considering the use of alternative fuels derived from agriculture. In that context, ethanol derived from sugar-cane and/or corn crops, and biodiesel derived from oil crops are potential renewable and carbon neutral alternatives to fossil fuels. Unfortunately, fuel from crops, waste and animal fat cannot realistically satisfy even a small fraction of the existing global demand for fuels. In Brazil, the government has been subsiding ethanol from sugar-cane crops for more than 30 years, and together with research investment on oil off-shore exploration, the initiative made possible for the country, at least for the moment, to become energy self sufficient, but due to oil supplies depletion, that scenery will change in the near future. Another limiting factor is cost. For example, the economic aspect of biodiesel production limits its development and large-scale use. Biodiesel usually costs almost twice the price per liter of conventional diesel fuel, currently in the US.Apart from economic aspects, it is clear that biofuel production technology needs to be improved to meet global fuel demand rate. One possible direction is the use of microalgae, that appear to be the only source of renewable biodiesel that is capable of meeting the diesel fuel global demand. Like plants, microalgae use sunlight to produce oils but they do so more efficiently than crop plants. Oil productivity of many microalgae greatly exceeds the oil productivity of the best producing oil crops.Approaches for making microalgal biodiesel economically competitive therefore need to be developed.The mission of Engenharia Térmica is to document the scientific progress in areas related to energy, particularly oil and renewables. We are confident we will continue to receive articles’ submissions that help enable sustainable energy solutions in the near future.

An Inquiry into the Efficiency of Carbon Pricing Policy: A study of Sweden, United Kingdom, and Japan

2020 ◽  
Author(s):  
Angela Thomas ◽  
Keyword(s):  
Alternative Energy ◽  
Energy Sources ◽  
Inclusive Growth ◽  
Exploratory Research ◽  
Lower Income ◽  
Pricing Policy ◽  
Carbon Pricing ◽  
Pricing Policies ◽  
Alternative Energy Sources ◽  
The Impact

This study uses an exploratory research methodology to analyse the efficiency of carbon pricing policies in driving sustainable development by effectively reducing carbon emissions, encouraging research and development of alternative energy sources and innovations. The study also attempts to assess the impact of carbon pricing as a driver for inclusive growth. This is through the analysis of relevant indicators to evaluate the distributive policies used by the governments to mitigate the disproportionate effect of lower income households is analysed

Cost Benefit Analysis of Alternative Fuel and Motive Power

2013 ◽  
Author(s):  
Chris Pinney ◽  
Melissa Shurland ◽  
Brian Smith
Keyword(s):  
Environmental Protection Agency ◽  
Energy Security ◽  
Alternative Energy ◽  
Decision Model ◽  
Alternative Fuels ◽  
Research Effort ◽  
Department Of Energy ◽  
Energy Sources ◽  
Potential Cost ◽  
The Us

A research initiative by the Federal Railroad Administration (FRA) and Transportation Technology Center, Inc. (TTCI) was developed to better understand the potential cost and benefits of using alternative fuels for United States freight and passenger locomotive operations. The framework for a decision model was developed to evaluate the feasibility of these newly emerging technologies. Because these alternatives (fuels and engine designs) are at early stages of development, the objective is to identify the most feasible alternatives and support their future development. Energy security policies developed by the US Department of Energy (DOE) and emission standards set forth by US Environmental Protection Agency (EPA) are driving most of the technology initiatives related to alternative fuels in the US. Identifying alternatives that may provide benefits in the areas of emissions and energy security in relation to their potential cost, safety, and operating efficiencies are the main analysis objectives of this study. Some of the alternative energy sources being studied, and that may be in limited use are biomass, natural gas and coal. These energy sources have the potential to replace diesel fuel and provide power for locomotive operations. However, most are considered experimental by the railway industry. In most cases engine modifications or complete motive power design changes are required. As a result, the use of alternative fuels or locomotives that are different from current diesel engine designs represent only a small percent of the total railroad fleet. The main drivers for the decision model identified in this research effort are Cost, Energy, Security, Emissions, Safety and Efficiency. Under each decision driver there are multiple criteria that may be used for comparison between proposed alternatives. The goal of the decision model is to understand if the criteria under the decision drivers are independently a cost or benefit to industry stakeholders as compared to a baseline case.

scholarly journals Priority directions of the energy sector development in the Republic of Turkey

2019 ◽  
Vol 124 ◽  
pp. 04022
Author(s):  
O. V. Luskatova ◽  
R. A. Eyvazov ◽  
M. M. Haytanova
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Alternative Energy ◽  
Renewable Energy Sources ◽  
Energy Sector ◽  
Energy Sources ◽  
Alternative Power ◽  
The Republic ◽  
The Impact ◽  
Republic Of Turkey

The impact of renewable energy sources on the national economy of the countries across the world will only increase in the near future. It is linked both with the policy of reducing the dependence on imported sources and the opportunities offered by alternative power. Having great prospects for using renewable energy sources in power generation, Turkey has been implementing coherent policy in this field. The article deals with the energy policy Republic of Turkey, analyzes its legislation, studies the trends in the alternative energy sector development as well as the current situation in the domestic power generation.

scholarly journals Biomass Production and Ester Synthesis byIn SituTransesterification/Esterification Using the MicroalgaSpirulina platensis

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Tatiana Rodrigues da Silva Baumgartner ◽  
Jorge Augusto Mendes Burak ◽  
Dirceu Baumgartner ◽  
Gisella Maria Zanin ◽  
Pedro Augusto Arroyo
Keyword(s):  
Energy Demand ◽  
Alternative Energy ◽  
Reaction Times ◽  
Biodiesel Production ◽  
Energy Sources ◽  
Alkyl Esters ◽  
Alternative Energy Sources ◽  
Different Temperatures ◽  
Acid Transesterification

The increasing energy demand and reduction in the availability of nonrenewable energy sources, allied with an increase in public environmental awareness, have stimulated a search for alternative energy sources. The present study was aimed at producing biomass from the microalgaSpirulina platensisand at assessingin situsynthesis of alkyl esters via acid transesterification/esterification of biomass to produce biodiesel. Two alcohols (ethanol and methanol) and two cosolvents (hexane and chloroform) were tested, at different temperatures (30, 45, 60, 75, and 90°C) and reaction times (10, 20, 30, 60, and 120 min). The factorial analysis of variance detected an interaction between the factors (): temperature, reaction time, alcohol, and cosolvent. The best yields were obtained with the combination ethanol and chloroform at 60°C, after 30 min of reaction, and with hexane at 45°C, after 10 min of reaction.In situtransesterification/esterification of alga biomass to form esters for biodiesel production adds unconventional dynamics to the use of this feedstock.

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