High spatiotemporal measurement and modeling of dissolution phenomena in supercritical fluids for innovative soil remediation

2021 Fiscal Year Final Research Report

• Project/Area Number: 20K22381
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0301:Mechanics of materials, production engineering, design engineering, fluid engineering, thermal engineering, mechanical dynamics, robotics, aerospace engineering, marine and maritime engineering, and related fields
• Research Institution: Tohoku University
• Principal Investigator: Kanda Yuki 東北大学, 流体科学研究所, 助教 (00885874)
• Project Period (FY): 2020-09-11 – 2022-03-31
• Keywords: 超臨界流体 / 二酸化炭素 / 光学計測 / 熱物質輸送 / 溶解現象

Outline of Final Research Achievements

In this study, heat and mass transfer phenomena were observed using special laser interferometry and evaluated by a numerical model to understand the dissolution phenomenon in supercritical carbon dioxide. As a result, it was succeeded to observe peculiar heat transfer phenomenon in supercritical carbon dioxide. In addition, acetone was selected as a pollutant, and the mass transfer due to the evaporation of acetone into the air was measured. The mass transfer of acetone in supercritical carbon dioxide was evaluated with numerical calculation.

Free Research Field

熱工学

Academic Significance and Societal Importance of the Research Achievements

超臨界流体を用いた汚染土壌改質手法の実現において、超臨界流体中の非定常熱物質輸送の理解は重要である。本研究では、超臨界二酸化炭素中における輸送現象を高精度に観察し、計測技術の確立、および輸送現象に関する情報を取得した。伝熱工学および計測工学をはじめとする学問分野において学術的意義は高いと考える。また本研究で得た知見は、超臨界流体を用いた汚染土壌改質手法の実現に向けて学術的基礎を成すと考える。