In-situ monitoring of NOM fouling caused in porous membrane with the use of solid-state excitation emission matrix analysis

2019 Fiscal Year Final Research Report

• Project/Area Number: 17H04941
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Civil and environmental engineering
• Research Institution: Chuo University
• Principal Investigator: Yamamura Hiroshi 中央大学, 理工学部, 教授 (40515334)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Keywords: 膜ろ過 / 励起蛍光分光分析 / 固体測定 / In-situ分析 / 膜ファウリング

Outline of Final Research Achievements

Excitation emission matrix (EEM) is a method for discriminating the type of organic matter by detecting fluorescences emitted when an organic substance is irradiated with excitation light.
In this study, with the aim of applying EEM to the analysis of membrane foulant, (1) a database for peak positions of solid EEM analysis was constructed for samples recovered from various waters, and (2) a continuous monitoring test of membrane fouling was carried out using solid EEM. Despite being the same material, it was revealed that the peak positions were different in the liquid and solid samples.
Solid-state EEM revealed organic matter properties related to the progress of irreversible membrane fouling.

Free Research Field

用排水処理

Academic Significance and Societal Importance of the Research Achievements

本研究により、簡易かつ高感度に膜ファウリング（目詰まり）物質が定性できるようになった。これにより、これまで試行錯誤的に実施されてきた膜ろ過運転の最適化や薬品洗浄条件の選定などを実施できるようになるため、大幅に膜ろ過にかかる導入コストの低減に繋がるものと期待される。
また、本研究により構築したNOM（天然有機物）の固体EEMスペクトルデータベースにより、NOMの特性を簡単かつ非破壊で分析できるようになる。それにより、土壌の性質が簡単に分析できるようになる。