نتایج جستجو برای: fossil fuels

تعداد نتایج: 37203  

2014
Kyeongsik Yoo Eunil Park Heetae Kim Jay Y. Ohm Taeyong Yang Joon Kim Hyun Joon Chang Marc A. Rosen

The South Korean government has long been attempting to reduce the nation’s heavy reliance on fossil fuels and increase environmental safety by developing and installing renewable power generation infrastructures and implementing policies for promoting the green growth of Korea’s energy industry. This study focuses on the use of independent renewable power generation systems in the more than 30...

2014
Hakan Eggert

The U.S., Brazil and a number of European and other countries worldwide have introduced various support schemes for bioethanol and biodiesel. The advantage of these biofuels is that they are relatively easily integrated with the current fossil fuel-based transport sector, at least up to a certain point. However, recent studies point to various negative effects of expanding the production of fir...

2007
R. Rostrup - Nielsen Thomas Rostrup - Nielsen

There is a growing need for hydrogen and a future hydrogen economy is high on the political agenda. But where should the hydrogen come from? The “sustainable” routes are still too expensive. Steam reforming of hydrocarbons is the most feasible route today. If CO2-sequestration is accepted, fossil fuels may play an important role in a starting future “hydrogen economy”. This will happen by use o...

2009
Marian Leimbach Nico Bauer Lavinia Baumstark Michael Lüken Ottmar Edenhofer

Within this paper, we explore the technical and economic feasibility of very low stabilization of atmospheric GHG concentration based on the hybrid model REMIND-R. The Fourth Assessment Report of the IPCC and the scientific literature have analyzed some low stabilization scenarios but with as yet little attention being given to the regional distribution of the global mitigation costs. Our study...

Journal: :Journal of environmental management 2017
Martha Georgiopoulou Gerasimos Lyberatos

The benefits of using alternative fuels (AFs) in the cement industry include reduction of the use of non-renewable fossil fuels and lower emissions of greenhouse gases, since fossil fuels are replaced with materials that would otherwise be degraded or incinerated with corresponding emissions and final residues. Furthermore, the use of alternative fuels maximizes the recovery of energy. Seven di...

2014
Ugo Bardi Virginia Pierini Alessandro Lavacchi Christophe Mangeant

The modern industrial cycle is mainly based on non-renewable mineral resources extracted from the Earth’s crust. After being processed and transformed into commodities, the products of mining become manufactured products which go through the economic system and are then discarded in the form of gaseous, liquid or solid waste. Eventually, the mass of the output in the form of waste must balance ...

2009
Kakali Mukhopadhyay

Concern over the environmental effects of fossil fuels in India has been growing as domestic consumption levels increase. Along with industry, households are major consumers of commercial energy and, consequently, major contributors to the total energy use in India. Emission levels in the country are gradually increasing. The present study estimates emissions related to fossil fuel combustion i...

2016
Ronan Bolton Timothy J Foxon Stephen Hall

This paper examines how actors in the UK electricity sector are attempting to deliver investment in low carbon generation. Low carbon technologies, because of their relative immaturity, capital intensity and low operational costs, do not readily fit with existing electricity markets and investment templates which were designed for fossil fuel based energy. We analyse key electricity market and ...

2004
Frank Kreith

This article presents a critical analysis of all the major pathways to produce hydrogen and to utilize it as an energy carrier to generate heat or electricity. The approach taken is to make a cradle to grave analysis including the production of hydrogen, the conversion of hydrogen to heat or electricity, and finally the utilization of that heat or electricity for a useful purpose. This methodol...

2017
Agnieszka Ruppert

Independence of the limited fossil fuel supplies as a main source of energy and chemicals remains a highly attractive perspective [1]. Biomass of the second to fourth generation constitutes a possible solution. Due to its recalcitrant nature, its conversion is however not trivial. Moreover, molecules obtained from biomass need further upgrading which is mostly done by hydrogenation, with fossil...

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