scholarly journals Biofuels from wastes in the Marmara Region, Turkey: Potentials and constraints

2021 ◽  
Author(s):  
Semra Ocak ◽  
Sevil Acar
Keyword(s):  
Energy Security ◽  
Energy Production ◽  
Fossil Fuels ◽  
Electricity Consumption ◽  
Agricultural Wastes ◽  
Marmara Region ◽  
Economic Costs ◽  
Direct Combustion ◽  
Animal Wastes ◽  
The Cost

Abstract Turkey as an energy importing country, is heavily dependent on fossil fuels, which causes an increase in environmental problems and raises concerns on energy security. However, biowastes offer a significant potential, especially in the Marmara Region of the country. In this study, the waste potential of the region for energy production is analyzed. Within this context, agricultural and livestock wastes are examined in terms of their amounts, theoretical energy potentials and costs to generate electricity. To evaluate economic costs, collection and feedstock costs for animal and agricultural wastes are handled in three different scenarios based on FAO’s assessment. Given the results for wastes and energy potentials, it has been deduced that biowastes can theoretically meet more than half of the electricity consumption of the region. The results of the cost analysis demonstrate that both direct combustion of agricultural wastes and conversion of animal wastes to biogas in CHP plants to produce electricity are economical according to several scenario options considering the LCOE and feed-in-tariff values.

scholarly journals Environmental and economic potential of rice husk use in An Giang province, Vietnam

2017 ◽  
Vol 8 (3) ◽  
pp. 206-211
Author(s):  
Thi Mai Thao Pham
Keyword(s):  
Power Generation ◽  
Rice Husk ◽  
Life Cycle Analysis ◽  
Large Scale ◽  
Fossil Fuels ◽  
Small Scale ◽  
Emission Mitigation ◽  
Mitigation Potential ◽  
Direct Combustion ◽  
The Cost

To evaluate CO2 emission mitigation potential and cost effectiveness of rice husk utilization, Life Cycle Analysis was conducted for 9 scenarios. The results showed that, gasification is the most efficient CO2 mitigation. From cost analysis, the cost mitigation can be achieved by replacing the current fossil fuels in cooking scenarios. Among the power generation scenarios, it was found that 30MW combustion and 5MW gasification power generations were the most economically-efficient scenarios. The briquette combustion power generation appeared less cost-competitive than direct combustion, whilst the large-scale gasification scenarios and the pyrolysis scenarios give the increase in cost from the baseline. From the viewpoints of both CO2 and cost, it was indicated that the win-win scenarios can be the rice husk use for cooking, for large-scale combustion power generation, and for small-scale gasification. Để đánh giá tiềm năng giảm thiểu phát thải CO2 và hiệu quả chi phí của việc sử dụng trấu, phương pháp đánh giá vòng đời sản phẩm đã được thực hiện cho 9 kịch bản. Kết quả cho thấy, khí hóa trấu để sản xuất điện có tiềm năng giảm phát sinh khí CO2 nhiều nhất. Kết quả phân tích chi phí cho thấy việc giảm thiểu chi phí có thể đạt được khi thay thế sử dụng nhiên liệu hóa thạch trong kịch bản dùng trấu cho nấu ăn. Giữa các kịch bản về sản xuất điện, hiệu quả kinh tế cao nhất trong trường hợp đốt trực tiếp trấu để sản xuất điện ở quy mô công xuất lớn (30MW) và khí hóa ở quy mô trung bình (5MW). Trường hợp dùng củi trấu không mang lại hiệu quả kinh tế so với dùng trực tiếp trấu để phát điện. Hai trường hợp dùng trấu để sản xuất dầu sinh học và khí hóa gas công suất lớn (30MW) cho thấy chi phí tăng cao so với điều kiện biên. Kịch bản cho kết quả khả thi về hiệu quả kinh tế và giảm phát thải CO2 là dùng trấu để nấu ăn, đốt trực tiếp để phát điện công suất lớn và khí hóa công suất trung bình.

scholarly journals Energy Security and Scenario Analysis of Province No. 1 of Federal Republic Nepal

2018 ◽  
Vol 4 ◽  
pp. 163-173
Author(s):  
Sujan Dulal ◽  
Shree Raj Shakya
Keyword(s):  
Energy Security ◽  
Fossil Fuels ◽  
Electricity Consumption ◽  
High Growth ◽  
Normal Growth ◽  
Provincial Government ◽  
Electrical Systems ◽  
Security Indicators ◽  
Business As Usual ◽  
Intervention Scenario

This paper presents the current energy security status of the province No.1 of Nepal using numerous indicators. In addition to that, with the development of six economic growth scenarios i.e. Business As Usual (BAU), Low growth (LOW), High growth (HIG), Accelerated growth (ACC), Normal growth (NOR) and Intervention scenario (INT), the future energy mix and energy security indicators for the year 2040 are also calculated. The paper also gives an overview of the variation/progress of the different indicators during the considered period of study. The study shows that the, energy intensity in the intervention scenario is brought down to 4.44 GJ/$1000 compared to that of 15 GJ/$1000. Also, the electricity consumption per capita is increased to 574 kWh from 116 in the base year. However, these values are only achieved if the provincial government helps implementing central government's plan of promoting the electrical systems instead of traditional fuel woods and fossil fuels system.

scholarly journals PENGARUH KOMPOSISI BIODIESEL TERHADAP KINERJA MESIN DAN EMISI GAS BUANG

2016 ◽  
Vol 11 (3) ◽  
pp. 381
Author(s):  
Martin Djamin ◽  
Soni S.Wirawan
Keyword(s):  
Renewable Energy ◽  
Energy Security ◽  
Energy Production ◽  
Fossil Fuels ◽  
Raw Materials ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Short Term ◽  
Renewable Fuel ◽  
Promising Solution

Renewable energy sources make a distinction as a promising solution towardssustainable and environmentally friendly energy production. Developing biodiesel isvery important for Indonesia due to various reasons including the abundanceavailability of the raw materials; an alternative renewable fuel to strengthen thecountry energy security and it is a solution to improve local air quality in severalIndonesian major cities. Biodiesel offers a realistic short-term alternative tosubstitute fossil fuels, and it will also be a necessary addition to the emissionfree technology for the future. This paper is intended to provide assessment andinvestigation of the use of different composition of biodiesel and its impact to theenvironment.Key words: Energy security, renewable energy, Biodiesel.

scholarly journals POLAND'S ENERGY SECURITY IN THE PROCESS OF ENERGY TRANSFORMATION

2021 ◽  
pp. 37-44
Author(s):  
M. Koczan
Keyword(s):  
International Organizations ◽  
Energy Security ◽  
Energy Production ◽  
Fossil Fuels ◽  
Raw Materials ◽  
Theoretical Aspect ◽  
The European Union ◽  
Taking Action ◽  
High Share ◽  
Practical Dimension

The issue of energy security has been present in the literature for several decades. Scientific studies focus mainly on the theoretical aspect of this concept. Many of them also describe and analyse the practical dimension of energy security, such as: international trade in raw materials, safety of transport of raw materials, energy production and transmission systems. For over a dozen years, the awareness of climate change, its causes and effects has been growing. Countries and international organizations are taking action to reduce greenhouse gases. The European Union is one of the world leaders in this process. Poland as a member state is obliged to implement the adopted energy and climate commitments. The electro-energy sector in Poland is based on the combustion of fossil fuels. Reducing a high share of coal in the energy mix is a long and very costly process. The speed and efficiency of this transformation affects the level of energy security in Poland.

scholarly journals Energy production analysis of Common Reed – Phragmites australis (Cav.) Trin.

2017 ◽  
Vol 44 (2) ◽  
pp. 107-113
Author(s):  
Jaroslav Demko ◽  
Ján Machava ◽  
Miroslav Saniga
Keyword(s):  
Energy Storage ◽  
Phragmites Australis ◽  
Energy Production ◽  
Fossil Fuels ◽  
Biogas Production ◽  
Calorific Value ◽  
Common Reed ◽  
Combustion Heat ◽  
Direct Combustion ◽  
The Common

AbstractSlovakia is acountry with limited natural resources, therefore its essential task is to search for new renewable sources of energy to reduce its dependence on imported fossil fuels. The results of research confirmed that the Common Reed (Phragmites australis(Cav.) Trin.) has considerable potential of phytomass production and energy storage (calorific value reached 17,448 J g−1d.w.). Biomass production of Common Reed under natural conditions of the lower Liptov region reached 12.702 tons of a dry mater per hectare with the calculated energy storage of 221.622 GJ ha−1. The average biogas production was 351.31 l kg−1of a dry matter of which the methane (CH4) content represents 185.21 l kg−1(52.72%). With regards to the values of combustion heat, a calorific value and the production of methane it can also be noted that in case of Common Reed it is more profitable to focus on direct combustion of biomass than the production of biogas and methane.

scholarly journals The American Public's Energy Choice

Daedalus ◽  
2012 ◽  
Vol 141 (2) ◽  
pp. 61-71 ◽  
Author(s):  
Stephen Ansolabehere ◽  
David M. Konisky
Keyword(s):  
Global Warming ◽  
Public Opinion ◽  
Energy Production ◽  
Fossil Fuels ◽  
Energy Sources ◽  
Economic Costs ◽  
Unified Framework ◽  
Carbon Policy ◽  
Environmental Attributes ◽  
Energy Choice

Public opinion about energy can be understood in a unified framework. First, people evaluate key attributes of energy sources, particularly a fuel's cost and environmental harms. Americans, for example, view coal as relatively inexpensive but harmful, natural gas as less harmful but more expensive, and wind as inexpensive and not harmful. Second, people place different weights on the economic and environmental attributes associated with energy production, which helps explain why some fuels are more popular than others. Americans' attitudes toward energy are driven more by beliefs about environmental harms than by perceived economic costs. In addition, attitudes about energy sources are largely unrelated to views about global warming. These findings suggest that a politically palatable way to reduce greenhouse gas emissions is through regulation of traditional pollutants associated with fossil fuels, rather than a wholly new carbon policy.

Identyfikacja kosztów pogorszenia reputacji przedsiębiorstwa z perspektywy interesariuszy

2014 ◽  
pp. 10-15
Author(s):  
Danuta Szwajca ◽  
Alina Rydzewska ◽  
Tomasz Nawrocki
Keyword(s):  
Cost Analysis ◽  
Economic Costs ◽  
Crisis Situation ◽  
Modern Economy ◽  
The Cost ◽  
A Company ◽  
Crisis Situations

In the realities of modern economy even the best-managed company is not able to avoid threats and bad decisions, that can cause a crisis. Each crisis situation, that a company experiences, generates not only measurable economic costs, but also more difficult to assess and measure costs of a deteriorated reputation. These costs are the result of infringement of interests or failing to satisfy different stakeholders expectations. The aim of this article is an attempt to identify the cost of reputation deterioration in the context of the various interests of stakeholders groups. In the first part, the paper presents the effects of good and bad reputation, the reputation "contamination" path in a crisis situation and a cost analysis caused by it. The second part is empirical, where the identification of crisis situations measurable costs and reputation deterioration based on the examples of three selected companies was performed.

Energy After COVID

2020 ◽  
Vol 119 (820) ◽  
pp. 317-322
Author(s):  
Michael T. Klare
Keyword(s):  
Renewable Energy ◽  
Electric Vehicles ◽  
Fossil Fuels ◽  
Fossil Fuel ◽  
White Collar ◽  
Peak Oil ◽  
Business Travel ◽  
Reduce Energy Consumption ◽  
The Cost ◽  
Energy Companies

By transforming patterns of travel and work around the world, the COVID-19 pandemic is accelerating the transition to renewable energy and the decline of fossil fuels. Lockdowns brought car commuting and plane travel to a near halt, and the mass experiment in which white-collar employees have been working from home may permanently reduce energy consumption for business travel. Renewable energy and electric vehicles were already gaining market share before the pandemic. Under pressure from investors, major energy companies have started writing off fossil fuel reserves as stranded assets that are no longer worth the cost of extracting. These shifts may indicate that “peak oil demand” has arrived earlier than expected.

Editor in Chief’s Note on the Green Hydrogen Fuel from Solar / Wind Power

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Seyed Ehsan Hosseini
Keyword(s):  
Solar Wind ◽  
Crude Oil ◽  
Fossil Fuels ◽  
Sustainable Energy ◽  
Green Energy ◽  
Hydrogen Fuel ◽  
Fuel Production ◽  
Crude Oil Prices ◽  
Trade War ◽  
The Cost

Renewable and sustainable energy has an evolving story as the ongoing trade war in the word is influencing crude oil prices. Moreover, the global warming is an inevitable consequence of the worldwide increasing rate of fossil fuel utilization which has persuaded the governments to invest on the clean and sustainable energy resources. In recent years, the cost of green energy has tumbled, making the price of renewables competitive to the fossil fuels. Although, the hydrogen fuel is still extremely expensive compared to the crude oil price, investigations about clean hydrogen fuel production and utilization has been developed significantly which demonstrate the importance of the hydrogen fuel in the future. This article aims to scrutinize the importance of green hydrogen fuel production from solar/wind energy.

Assessing desalination as a sustainable alternative using a multiple criteria decision support model

2008 ◽  
Vol 3 (3) ◽  
Author(s):  
M. B. Fernandes ◽  
M. C. Almeida ◽  
A. G. Henriques
Keyword(s):  
Decision Support ◽  
Energy Production ◽  
Fossil Fuels ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
High Energy ◽  
Economic Benefits ◽  
Multiple Criteria ◽  
Water Production ◽  
Decision Support Model

Desalination technologies provide an alternative for potable water production, having significant potential for application where fresh water scarcity exists. Potential benefits have to be balanced with other factors, such as high costs, high energy consumption, and significant environmental impacts, for the understanding of real risks and gains of desalination within the context of integrated water resources management. Multiple factors can be considered when analysing the viability of a desalination project but often a limited approach is used. The complexity in the analysis lies in finding the alternatives that obey to multiple objectives (e.g. reduced environmental impact, social acceptance, less cost associated). In this paper, development of a methodology based on multiple criteria decision support system for the evaluation and ranking the potential of desalination technologies is described and applied to a Portuguese case study. Relevant factors to the selection of desalination technologies were identified using SWOT analysis and the MACBETH (Measuring Attractiveness by a Categorical Based Evaluation Technique) approach was applied. Technical alternatives considered include reverse osmosis and multi-effect desalination (MED), together with energy production by fossil fuels or solar energy. Production of water by conventional approaches was also considered. Results, for non-economic benefits, show higher score for MED solar but, in the cost-benefit analysis, conventional methods of water production have higher ranking since costs of renewable energies are not yet competitive. However, even if not preferred in economic terms, desalination is ranked significantly above the conventional approaches for non-economic criteria.

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