Fossil And Renewable Fuels
Mostrando 1-12 de 39 artigos, teses e dissertações.
-
1. Contribuição dos Sistemas Fotovoltaicos Conectados à Rede Elétrica para a Redução de CO2 no Estado do Ceará
Resumo A questão energética tem um significado relevante no contexto da busca do desenvolvimento sustentável, sendo condição essencial para encontrar caminhos alternativos para substituir o uso de combustíveis fósseis. O estado do Ceará possui potencial para o uso de energias renováveis, especialmente a eólica e solar. Este artigo tem como objetivo
Rev. bras. meteorol.. Publicado em: 21/10/2019
-
2. GEOGRAPHIC MODELLING OF WIND AND SOLAR ENERGY POTENTIAL
Abstract Reducing ‘Greenhouse Gas’ emissions, particularly of CO2, is a global commitment which has gained predominance with the emergence of sources that generate renewable energy as an alternative to traditional energy produced through fossil fuels. Renewable or ‘soft’ forms of energy are all those which use the elements of nature - for example, th
Bol. Ciênc. Geod.. Publicado em: 14/10/2019
-
3. Narrativas científicas sobre petróleo e mudanças do clima e suas reverberações na política climática brasileira
Resumo De uma perspectiva analítica sobre as interações entre ciência e política em torno de questões energéticas e climáticas, o artigo identifica diferentes narrativas científicas referentes ao papel dos combustíveis fósseis, especificamente do petróleo do Pré-sal brasileiro, num contexto de mudança climática e transição para fontes renov�
Sociologias. Publicado em: 02/09/2019
-
4. Evaluation of endoglucanase and β-glucosidase production by bacteria and yeasts isolated from a eucalyptus plantation in the cerrado of Minas Gerais
Resumo O atual cenário ambiental e econômico global tem uma relação intrínseca com o aumento do consumo de combustíveis fósseis causados pelo desenvolvimento de tecnologias e pelo crescimento da população mundial. Assim, é necessário procurar fontes renováveis de biocombustíveis na tentativa de mitigar os efeitos dos combustíveis fósseis no me
Rev. Ambient. Água. Publicado em: 15/07/2019
-
5. Esterificação do ácido oleico utilizando aluminossilicato mesoporoso modificado com óxido de zircônio
RESUMO Os desafios decorrentes do aumento populacional, do uso extensivo e degradação dos recursos naturais e da dependência dos recursos fósseis, tem despertado o interesse pelo desenvolvimento de tecnologias para a produção de combustíveis renováveis. Dentro deste contexto tecnologias para a produção de biodiesel tem sido bastante estudadas de fo
Matéria (Rio J.). Publicado em: 20/05/2019
-
6. Appliance of a high pressure semi-batch reactor: supercritical transesterification of soybean oil using methanol
Abstract This work presents the results of a supercritical transesterification process of soybean oil using methanol, performed in a laboratory high pressure semi-batch reactor. A full description of the equipment and a standard operating procedure are also provided. Since fossil fuels are not renewable, biofuels such biodiesel, have gained attention over t
Food Sci. Technol. Publicado em: 31/01/2019
-
7. CÉLULAS SOLARES DE PEROVSKITAS: UMA NOVA TECNOLOGIA EMERGENTE
Solar energy has been considered as an important source of clean and safe energy to overcome the problems associate to the burn of fossil fuels (e.g. climate changes, pollution, health problems, etc.). In the area of photovoltaics, devices that convert solar energy into electricity, perovskites solar cells (PSC) have attracted great attention due to their ra
Quím. Nova. Publicado em: 2018-01
-
8. Application of Full Factorial Design to Evaluate the Effect of Different Variables on the Stability of Biodiesel:Diesel Blends under Storage Conditions
Biodiesel is obtained from a renewable source and has been used as an alternative to fossil fuels. It has unsaturated fatty acid methyl esters that can degrade due to oxidation of the double bonds. The instability of biodiesel during storage may cause problems regarding the maintenance and operation of motors. This work evaluated the effect of several variab
J. Braz. Chem. Soc.. Publicado em: 2017-10
-
9. Characterization of biomasses from the north and northeast regions of Brazil for processes in biorefineries
Abstract In search for renewable energy sources, the Brazilian residual biomasses stand out due to their favorable physical and chemical properties, low cost, and their being less pollutant. Therefore, they are likely to be used in biorefineries in the production of chemical inputs to substitute fossil fuels. This substitution is possible due to the high con
Food Sci. Technol. Publicado em: 15/09/2015
-
10. 1,3-propanodiol: produção, aplicações e potencial biotecnológico
1,3-propanediol is a high-value specialty chemical which has many industrial applications. Its main use is the production of the polymer polypropylene terephthalate, a thermoplastic used in the textile and automobile industries. The interest in 1,3-propanediol production from glycerol bio-conversion has increased after the employment of biodiesel by various
Quím. Nova. Publicado em: 2014-06
-
11. Química Sem Fronteiras: o desafio da energia
Coal, natural gas and petroleum-based liquid fuels are still the most widely used energy sources in modern society. The current scenario contrasts with the foreseen shortage of petroleum that was spread out in the beginning of the XXI century, when the concept of "energy security" emerged as an urgent agenda to ensure a good balance between energy supply and
Quím. Nova. Publicado em: 2013
-
12. Geração distribuída aplicada à edificações : edifícios de energia zero e o caso do laboratório de ensino da FEC-Unicamp / Distributed generation applied to buildings : net zero energy buildings and the case of the laboratory at FEC-Unicamp
Electricity consumption in Brazil increased 47% in the last decade, and it is estimated that it will increase 55.6% until 2020. Most of the electricity generated in the country is based on large hydroelectric dams, located away from the major cities. The planned expansion of the generation park to meet this increase in the demand is also based on this model,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2012