Authors:Anne G. D. Santos, Vinícius P. S. Caldeira, Mirna F. Farias, Antonio S. Araújo, Luiz D. Souza, and Allan K. Barros
from oil crops, waste cooking oil, or animal fat via a transesterification process [ 1 ]. This process exhibits improved fuel properties as compared to its corresponding oil. Biodiesel shows improved volatility characteristics approaching those of
Authors:L. Freire, T. Bicudo, R. Rosenhaim, F. Sinfrônio, J. Botelho, J. Carvalho Filho, I. Santos, V. Fernandes, N. Antoniosi Filho, and A. Souza
Biodiesel is susceptible to autoxidation if exposed to air, light and temperature, during its storage. Physic nut (Jatropha curcas L.) seeds show potential application for biodiesel production since its oil yields high quality biodiesel. This work aims
to evaluate the thermal behavior of the physic nut oil and biodiesel, from several Brazilian crops, by means of thermoanalytical
techniques. Thermogravimetry (TG) and pressurized-differential scanning calorimetry (PDSC) were used in order to determine
the applicability of physic nut biodiesel as fuel. Results suggest that physic nut biodiesel is a practical alternative as
renewable and biodegradable fuel able to be used in diesel motors.
poccТЙckoΓo HeΦetΓaЭoBoΓo cekTopa (The Macroeconomic Appraisal of the Role of the Russian Oil and Gas Complex). Voprosy Ekonomiki 10 : 4-29.
MakpoЭKOHOMТчeckaЯ oпeHka poл poccТЙckoΓo HeΦetΓaЭoBoΓo cekTopa (The Macroeconomic Appraisal
Authors:G. A. A. Teixeira, A. S. Maia, I. M. G. Santos, A. L. Souza, A. G. Souza, and N. Queiroz
methanol or ethanol [ 1 – 5 ]. In Brazil, biodiesel is used as a B5 mixture (5 vol.% biodiesel and 95 vol.% conventional diesel), being the soybean oil the main raw material. The continuous rise in the biodiesel percentage added to diesel contributes to the
Authors:Tiit Kaljuvee, Merli Keelmann, Andres Trikkel, and Rein Kuusik
Oil shales (OS) are fine-grade sedimentary rocks containing relatively large amounts of combustible organic matter (kerogen) in mineral matrix. The amount and composition of organic matter as well as the
Authors:M. B. Dantas, A. R. Albuquerque, L. E. B. Soledade, N. Queiroz, A. S. Maia, I. M. G. Santos, A. L. Souza, E. H. S. Cavalcanti, A. K. Barro, and A. G. Souza
The use of biodiesel as fuel has become attractive mainly by ecological benefits as it is produced from renewable fonts [ 1 ]. In Brazil, among the raw materials used in the biodiesel obtaining soybean oil [ 2
Authors:Marcelo Kobelnik, Douglas Lopes Cassimiro, Diógenes dos Santos Dias, Clóvis Augusto Ribeiro, and Marisa Spirandeli Crespi
great amounts of fiber, and possesses succulent pulp [ 1 , 2 ]. The study of this oil is nowadays of growing interest because it is highly appreciated for human consumption because of its natural flavor and aroma characteristics and, besides, it is
. Thermal decomposition process yields gaseous and liquid products as well as energy. The thermal degradation kinetics of individual polymers have been described in the previous work [ 1 – 7 ].
Oil shale is one of the most promising sources of energy