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Environmental Preservation Engineering Lab (Environment Preservation Center)
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The lab studies society through the lens of waste to show the path toward a sound material-cycle society.

AboutAbout the lab
Seeing society through waste.
The Environmental Preservation Engineering Lab studies society through its waste to gain the knowledge needed to build a sound material-cycle society.
It analyzes material cycles by linking technologies for properly managing waste with how chemicals behave in the environment.
It also develops models for building a sound material-cycle society and evaluates policies such as recycling laws.
Located in the Environment Preservation Center, which handles environmental management at Kyoto University, the lab also studies the sustainability of the campus.
Key terms
- Material Flow Analysis
- A method for quantifying how much of a material or product flows through production, use, and disposal
- Life Cycle Assessment
- A method for numerically evaluating the environmental burden a product imposes over its entire life (LCA)
- Persistent Organic Pollutants
- Harmful organic compounds that resist degradation and remain for a long time in the environment and in living organisms (e.g., PCBs)
ResearchResearch themes
Linking technologies for proper waste management with the behavior of chemicals in the environment, the lab studies systems analysis of material cycles and models for building a sound material-cycle society. It also works on environmental conservation and sustainability of the university campus.
*Illustrative imageGreenhouse Gas and Life Cycle Analysis
The lab captures the production, use, and disposal of materials and products with material flow analysis, and quantifies their environmental impact with life cycle assessment. It is working to estimate the lifespans of home appliances and automobiles and to improve the accuracy of greenhouse gas calculations for waste incineration.
*Illustrative imageSystems Analysis for Chemical Management
The lab estimates where in a product's life cycle, and how much, persistent organic pollutants such as PCBs and heavy metals such as mercury and lead are released into the environment. It predicts concentrations and human intake with environmental fate models and verifies the results against observational data.
*Illustrative imageCitizens' Lifestyles and the Effects of Environmental Policy
The lab surveys the composition of waste, clarifies the amounts of single-use plastics such as plastic shopping bags and of food loss, and evaluates the effects of environmental policies. It examines how residents' sorting and disposal habits relate to what is in the waste, and considers effective policies.
*Illustrative imageEnvironmental Conservation on University Campuses
The lab conducts fundamental research on waste liquids and wastewater, waste, energy, and greenhouse gases at the university, and works to build environmental management systems and realize a sustainable campus. It analyzes data such as chemical usage and experimental wastewater.
MembersFaculty
- ProfessorYasuhiro Hirai
- Associate ProfessorJunya Yano
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “University of Kyoto Katsura Campus” Bineapple / CC BY-SA 3.0 (cropped)
- Greenhouse Gas and Life Cycle Analysis: “Greenhouse gas emissions by gas, Canada, 1850 to 2022” Our World in Data / CC BY 4.0 (cropped)
- Systems Analysis for Chemical Management: “Chemicals Management Building sign, Sep 17” An Errant Knight / CC BY-SA 4.0 (cropped)
- Citizens' Lifestyles and the Effects of Environmental Policy: “Havant Household Waste Recycling Centre June ))” Djm-leighpark / CC BY-SA 4.0 (cropped)
- Environmental Conservation on University Campuses: “Kyoto University Main Campus 2018 a” 桂鷺淵 / CC BY-SA 4.0 (cropped)
- Related lab (Environmental Quality Prediction Lab (Research Center for Environmental Quality Management)): “EPA GULF BREEZE LABORATORY, CHEMISTRY LAB. THE CHEMIST IS TESTING WATER SAMPLES FOR PESTICIDES - NARA - 546277” William C. Shrout / Public domain (cropped)
- Related lab (Environmental Design Engineering Lab): “Deer Island Waste Water Treatment Plant from lookout” 4300streetcar / CC BY 4.0 (cropped)
- Related lab (Radioactivity Environmental Dynamics Engineering Lab (Institute for Integrated Radiation and Nuclear Science)): “Radioactive contamination monitor EKO-C” Łukasz Karolewski / CC BY-SA 4.0 (cropped)
- Related lab (Water Environment Engineering Lab): “ČBu, wastewater treatment plant 05” Czeva / CC BY-SA 4.0 (cropped)
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