Clarification of mechanism of liquid-phase adsorption using carbon gels as model adsorbents

2020 Fiscal Year Final Research Report

• Project/Area Number: 19K20478
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 64020:Environmental load reduction and remediation-related
• Research Institution: Hokkaido Research Organization
• Principal Investigator: Yoshida Seiichiro 地方独立行政法人北海道立総合研究機構, 産業技術環境研究本部 工業試験場, 研究職員 (00806002)
• Project Period (FY): 2019-04-01 – 2021-03-31
• Keywords: 吸着 / 多孔質材料 / カーボンゲル / 色素

Outline of Final Research Achievements

In this research, we aimed to elucidate mechanisms of liquid-phase adsorption through adsorption experiments by using carbon gels, porous carbon materials with controllable factors governing liquid-phase adsorption, as model adsorbents and dyes with a wide variety of chemical properties as model adsorbates. As a result of liquid-phase adsorption experiments, we found that pores of carbon gels, which dyes are adsorbed, to depend on molecular weights of dyes. It was also found that the adsorption rate significantly increased with decreasing of particle sizes of the carbon gels, however the equilibrium adsorption amounts were independent of the particle sizes.

Free Research Field

化学工学

Academic Significance and Societal Importance of the Research Achievements

液相吸着は色素の除去やエキスの脱色等の様々な分野で広く用いられているが、その現象が非常に複雑であり詳細なメカニズム解明は困難であった。本研究において、液相吸着の支配因子を自由に制御可能なカーボンゲルをモデル吸着剤に適用することで、液相吸着のメカニズムがより詳細に明らかになった。本成果を活用することで、合理的な液相吸着のプロセス設計や吸着剤の構造設計が可能になると考える。