Manabu Fujii Lab, Department of Civil and Environmental Engineering, School of Environment and Society, Tokyo Institute of Technology


炭素材(修飾活性炭、カーボンフォーム等)やナノ材料(光触媒等)を用いた新規水処理技術の開発 / Development of Novel water treatment technology using carbon material (modified activated carbon, carbon foam etc) and nanomaterials (photocatalysis etc)


More than 100,000 chemicals are used in modern society, with thousands of new ones being developed each year. Many of these chemicals enter wastewater as emerging trace pollutants, while persistent substances such as pharmaceuticals and pesticides, organo-fluorine compounds (PFAS), microplastics, etc are released into the environment without undergoing biodegradation during the wastewater treatment process. Therefore, appropriate treatment of emerging pollutants is an important issue from the viewpoint of sustainable water use and healthy ecosystem conservation under climate change. In this study, we will develop efficient treatment methods for persistent pollutants using various approaches such as photocatalytic, electrochemical and adsorption methods.

【新規炭素材料を活用した新興汚染物質の促進酸化処理技術の開発 / Advanced oxidation process using a novel carbon material for emerging contaminant removal】


Many emerging contaminants have biologically persistent aromatic structures which are composed of chemically stable cyclic conjugates, and the treatment efficiency is low in conventional microbial treatment (activated sludge method, etc.). On the other hand, although there have been many previous studies on the treatment of persistent emerging contaminants, such as treatment using physisorption or chemical oxidation, but the material resources, robustness, and effects of treatment disturbance in the actual environment are often not fully considered. Therefore, the objective of this study was to develop an advanced oxidation treatment technology that can decompose persistent emerging contaminants with high efficiency under real-world conditions. Specifically, we aimed to develop a sustainable oxidation treatment method by synthesizing functional carbon materials (e.g., porous carbon foam) from biomass using pyrolysis treatment methods. Then, we proposed a sustainable water treatment technology by conducting oxidation and removal tests of emerging pollutants under realistic environmental conditions and evaluating its performance.

多孔質性カーボンフォームの開発/Development of porous carbon foam (figure from Zhang et al 2024)

多孔質性カーボンフォームの電気フェントン反応への応用/Application of porous carbon foam to electro-Fenton reaction (figure from Zhang et al 2024)

スイスロール電極を用いた電気化学的高度酸化プロセスによるカルボフランの効率的分解 / Swiss-roll electrodes for efficient degradation of carbofuran by electrochemical advanced oxidation processes (figure from Zhang et al 2022)


【アミン修飾炭素材料によるペルフルオロおよびポリフルオロアルキル物質(PFAS)の効率的吸着除去 / Efficient Adsorption Removal of Per- and Polyfluoroalkyl Substances (PFAS) by Amine-Modified Carbon Materials】


In this study, the surface of commercial activated carbon was coated with a cationic polymer, polydiallyldimethylammonium chloride (PolyDADMAC), to carry anion exchange function. This amine-modified carbon material showed excellent adsorption capacity for PFOA, and improved adsorption performance was confirmed at a sufficiently higher dose of PolyDADMAC. In addition, an adsorption performance test was conducted for low concentrations of PFOS at natural water condition (with a view to practical application), and sufficient removal was confirmed after a contact time of approximately several minutes. The regeneration process was also investigated. This study provides an important basis for establishing a sustainable PFAS removal technology.

アミン修飾炭素材によるペルフルオロオクタン酸(PFOA)の吸着除去/Adsorptive removal of perfluorooctanoic acid by amine-modified carbon materials (Data and figures from presentation at JSCE conference, and Kato et al 2023 [加藤ら2023])

PFASの吸着除去と再生/Adsorptive removal regeneration of PFAS

短鎖PFASに着目した吸着除去特性/Adsorptive removal for short-chain PFAS


【ランタノイド系光触媒の開発と水処理への応用/Development of lanthanide-based photocatalysts and their application to water treatment】


For example, we will develop photocatalysts with strong oxidizing effects by improving the quantum yield of quantum dots and lanthanides under quantum mechanical constraints, such as photoluminescence effect. In addition to the academic viewpoints of elucidating the reaction mechanism and improving efficiency, we will also work on the design of reactor based on fluid mechanics and life cycle assessment of environmental effects for social implementation.


関連文献 / Reference

  • 科研費挑戦的研究(萌芽) 2019-20年度「量子化学計算による高度処理での有機微量汚染物質の反応経路解析、等.


    東京工業大学 環境・社会理工学院 土木・環境工学系 藤井 学 研究室 〒152-8552 東京都目黒区大岡山2-12-1-M1-22 / TEL: 03-5734-3687 / E-mail: fujii.m.ah(at)
    Manabu Fujii Lab, Department of Civil and Environmental Engineering, School of Environment and Society, Tokyo Institute of Technology, 2-12-1-M1-22, Ookayama, Meguro-ku, Tokyo 152-8552, Japan / TEL: +81-3-5734-3687 / E-mail: fujii.m.ah(at)