廃棄物からのリンおよびエネルギー高効率回収に向けて―リンを含む灰粒子が高温条件で付着する現象を解明― Toward High Efficiency Recovery of Phosphorus and Energy from Waste ― Clarification of the Adhesion of Phosphorus-Containing Ash Particles under High Temperature Conditions ―
当学科の教員らは、廃棄物焼却灰粒子に含まれるリンがその付着性に与える影響を明らかにしました。同時に、リンが原因で発生する付着トラブルを、わずか3 wt%の酸化鉄ナノ粒子添加で抑制させることに成功しました。この成果により、リンを含む廃棄物を高効率に安定して焼却することが可能となり、リン回収による水環境保護およびリンの再資源化、さらには廃棄物からのエネルギー回収まで、持続可能な社会の実現に向けたプロセスの構築に貢献できます。A research group in our department have revealed the effect of phosphorus in waste incineration ash particles on their adhesion. At the same time, the addition of only 3 wt% iron oxide nanoparticles was able to suppress adhesion problems caused by phosphorus. As a result, waste containing phosphorus can be incinerated in a highly efficient and stable manner, contributing to the construction of processes for the realization of a sustainable society, including the protection of the water environment through the recovery of phosphorus, the recycling of phosphorus, and the recovery of energy from waste.
詳細：ACS Sustainable Chem. Eng. 2021 (Role of Phosphorus and Iron in Particle Adhesiveness at High Temperatures Using Synthetic Ashes Genki Horiguchi, Masahiro Ito, Atsuki Ito, Hidehiro Kamiya, and Yohei Okada (ACS Sustainable Chem. Eng. 2021)
今後の展開 Future development
複雑で詳細が不明だった粒子の高温付着性について、本研究結果を含めた我々の成果により体系的な理解が進んでいます。得られた知見を基に、付着性をあらかじめ予測する手法や、多様な燃料由来の灰の付着を適切に制御できる技術を開発し、産業界に貢献していくことを目標としています。The high temperature adhesiveness of particles, which was complicated and unknown in detail, has been systematically understood based on the findings of this study and other results. Based on the knowledge obtained, the goal is to contribute to the industry by developing methods to predict adhesion in advance and technologies to appropriately control the adhesion of ash derived from various fuels.