By a News Reporter-Staff News Editor at Journal of Engineering -- New research on Chemical Engineering is the subject of a report. According to news reporting originating from Sao Paulo, Brazil, by VerticalNews correspondents, research stated, "Cordierite bonded porous SiC ceramics having pore fractions (epsilon) between 0.33 and 0.72 and pore sizes of 6-50 mu m, flexural strength of 5-54 MPa, and elastic modulus of 6-42 GPa were prepared by oxide bonding at 1350 degrees C in air compacts of SiC, Al2O3 and MgO powders with petroleum coke (PC) as the sacrificial pore former. To test the applicability of the porous ceramics in the fluid flow field, air permeation behavior was studied with fluid superficial velocity from 0.083 to 0.90 m s(-1) and at 26-750 degrees C. The Darcian, k(1), and the non-Darcian, k(2), permeability coefficients were evaluated by fitting Forchheimer's equation to the experimental results."
Our news editors obtained a quote from the research from the University of Ribeirao Preto, "The temperature dependence of the permeability coefficients was explained from structural changes occurring during test conditions. The collection efficiency of filter ceramics (epsilon = 0.62-0.68) operating on removal of nanosized aerosol particles with sizes varying from 7 to 300 nm was determined by counting particles before and after filtration at a fluid superficial velocity of 0.1 m s(-1). Experimental results showed variation of collection efficiency from 96.7 to 99.9%. The size-selective fractional collection efficiency at different porosity levels was derived by using the well-known single-collector efficiency model considering some boundary conditions, and the model data were validated with experimental results."
According to the news editors, the research concluded: "The test results were used for examination of the applicability of the filter ceramics in nanoparticle filtration processes."
For more information on this research see: Permeability and Nanoparticle Filtration Assessment of Cordierite-Bonded Porous SiC Ceramics. Industrial & Engineering Chemistry Research, 2013;52(51):18362-18372. Industrial & Engineering Chemistry Research can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Industrial & Engineering Chemistry Research - www.pubs.acs.org/journal/iecred)
The news editors report that additional information may be obtained by contacting A. Dey, Univ Ribeirao Preto UNAERP, Course Chem Engn, BR-14096900 Sao Paulo, Brazil. Additional authors for this research include N. Kayal, O. Chakrabarti, R.F. Caldato, C.M. Andre and M.D.M. Innocentini.
Keywords for this news article include: Brazil, Sao Paulo, South America, Chemical Engineering
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