News Column

New Chemical Engineering Study Findings Have Been Reported from Nagoya University (Flotation and Sedimentation Properties in Centrifugal Separation...

August 6, 2014



New Chemical Engineering Study Findings Have Been Reported from Nagoya University (Flotation and Sedimentation Properties in Centrifugal Separation of Emulsion-Slurry)

By a News Reporter-Staff News Editor at Journal of Engineering -- Investigators discuss new findings in Chemical Engineering. According to news reporting out of Nagoya, Japan, by VerticalNews editors, research stated, "The centrifugal separation of an emulsion-slurry containing oil droplets and colloidal SiO2 particles was investigated using the microprocessor-controlled analytical photocentrifuge, LUMiFuge. The oil droplets and SiO2 particles were completely separated after centrifugation due to the flotation of the oil droplets and the sedimentation of the SiO2 particles, as a result of the density difference."

Our news journalists obtained a quote from the research from Nagoya University, "The flotation velocity of the oil droplets and the settling velocity of the SiO2 particles were larger than those of the single dispersions (oil-in-water (O/W) emulsion and SiO2 suspension) with the corresponding volume fractions. The acceleration effects of flotation and sedimentation were examined using the flotation and sedimentation coeffcients, in which the effect of centrifugal acceleration on the flotation and sedimentation velocities was cancelled. The flotation and sedimentation coeffcients increased with increasing SiO2 particle or oil droplet volume fractions in the emulsion-slurry, and the acceleration effect of the flotation coefficient was noteworthy due to the marked increase in the density difference between the oil droplets and the emulsion-slurry with increasing SiO2 particle volume fractions."

According to the news editors, the research concluded: "The flotation and sedimentation coefficients were experimentally described using two types of void functions, and accurately described the acceleration effect in the centrifugal separation of the emulsion-slurry."

For more information on this research see: Flotation and Sedimentation Properties in Centrifugal Separation of Emulsion-Slurry. Journal of Chemical Engineering of Japan, 2014;47(5):392-398. Journal of Chemical Engineering of Japan can be contacted at: Soc Chemical Eng Japan, Kyoritsu Building4-16-19 Kohinata, Bunkyo Ku Tokyo, 112, Japan.

Our news journalists report that additional information may be obtained by contacting D.Q. Cao, Nagoya University, Dept. of Chem Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan. Additional authors for this research include E. Iritani and N. Katagiri.

Keywords for this news article include: Asia, Japan, Nagoya, Chemical Engineering

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


For more stories covering the world of technology, please see HispanicBusiness' Tech Channel



Source: Journal of Engineering


Story Tools






HispanicBusiness.com Facebook Linkedin Twitter RSS Feed Email Alerts & Newsletters