Kyoto University · Environmental Science
Professor Masaki Takaoka's research lab specializes in environmental materials science, focusing on the speciation and chemical behavior of heavy metals in municipal solid waste incinerator (MSWI) fly ash. The lab employs advanced synchrotron-based X-ray absorption spectroscopy (XAFS) and in situ XANES techniques to investigate the oxidation states and local electronic structures of toxic metals such as copper, lead, antimony, and zinc during thermal processes. Their work aims to elucidate the mechanisms of dioxin formation and metal transformation in post-combustion environments, contributing to improved pollution control and safer waste management technologies. The lab also explores the role of metal chlorides and fly ash components in catalyzing hazardous compound generation under realistic incineration conditions.
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
Open papers in the app to read, cite, and organize with AI.
