京都大学 · 環境科学
高齢化社会に伴う廃棄物処理の重要性に鑑み、都市ごみ焼却灰に含まれる重金属の化学状態と挙動をXAFS・XANESを用いて解明する研究を推進しています。特に、ダイオキシン類の生成機構に深く関与する銅や鉛、亜鉛の化学的挙動を、実焼却灰およびモデル灰を用いて詳細に分析しています。環境中での重金属の移行・安定性を予測し、持続可能な廃棄物管理に貢献することを目的としています。
Figures are computed from collected data and may differ slightly.
Although many researchers have reported that copper chloride is an important catalyst that generates relatively large amounts of dioxins in heat experiments involving model fly ash, details on the behavior of copper during the process are still unavailable. In this study, we used in situ XANES experiments involving one type of real fly ash, which originated from a municipal solid-waste incinerator (MSWI), and two fly ash models to investigate the behavior of copper in fly ash at temperatures tha
It is important to understand the chemical states of heavy metals in solid waste from municipal incinerator (MSWI) fly ash as both the toxicity and behavior in the environment of heavy metals differ with their chemical states. In this study, direct speciation of lead, antimony and zinc in MSWI fly ash was conducted by XAFS spectroscopy. Three kinds of fly ash from continuous stoker-type MSWIs and a kind of fly ash from an ash melting plant (AMP) were investigated. XAFS measurements were carried
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