Palestra “Supercritical Technology in Brazil: system investigated (1994 – 2004)”
Evento: V EBFS – Brazilian Meeting on Supercritical Fluids
Palestrante: M.Angela. A. Meireles
Abstract In this work, a review of the Brazilian scientific production in the past 10 years in the field of supercritical fluid is presented. The historical facts associated with the previous edition of the Brazilian Meeting on Supercritical Fluids are discussed.
To evaluate the importance of the field worldwide, a search using the words ‘supercritical fluid(s)’ in the ISI Web of Science data was done. The query returned 5511 documents for the period 1994 – 2004. Using a more restrictive query including the word extraction in the following context: ‘supercritical fluid(s) extraction’, ‘compressed carbon dioxide extraction’, ‘pressurized carbon dioxide (extraction)’, ‘pressurized CO2’, ‘supercritical CO2’ resulted in 3678; when the search was restricted to the title 1669 publications met the criteria. The South American countries contributed with 152 papers of these 121 came from Brazil.
In the past 5 years (1999 – 2003) 82 papers from South American countries were published in journals indexed in the Web of Science data basis. Of these, 26 papers were related to the use of SCF as an analytical tool. Supercritical extraction from a variety of vegetable raw material contributed with 38 papers and SFE applied to the petroleum industry added 2 papers to the field. Reactions contributed with 3 publications while thermodynamics and fundamental studies were responsible for 13 publications. The Brazilian contribution represented 53 – 84% of the publications in the above areas.
In spite of the scientific knowledge and the large availability of raw materials presenting both good quality and cost, there is no industrial supercritical fluid unit in Brazil. A brief discussion of the reasons for this situation was presented considering the scientific as well as the political environments of the period considered.