Quantification of environmental safety variability in recycled materials and proposal of risk management method

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K06273
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Civil and environmental engineering
• Research Institution: Osaka City University
• Principal Investigator: MIZUTANI Satoshi 大阪市立大学, 大学院工学研究科, 准教授 (80283654)
• Co-Investigator(Kenkyū-buntansha): 遠藤 智司 大阪市立大学, 都市研究プラザ, 特任准教授(テニュアトラック) (30748934)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 循環資材 / 環境安全性 / ばらつき / サンプリング頻度

Outline of Final Research Achievements

For the effectively use recycled materials in the environment, it is necessary to evaluate the environmental safety indicated by acid extractable contents and leached quantity of hazardous elements so as not to cause environmental pollution. However, its evaluation method and sampling frequency are not clearly defined. In this study, we studied the variation of environmental safety of the recycled materials such as molten slag of municipal solid waste incineration bottom ash, concrete recycled crushed stone made from demolition waste of the buildings and granulated blast furnace slag, that a byproduct of steel industry. Environmental safety is evaluated by acid extractable contents and leached quantity of substances. The results are evaluated by statistical methods. Furthermore, based on the variation data and statistical estimation methods, we propose sampling method and sampling frequency for the recycled materials.

Free Research Field

廃棄物の適正処理と有効利用における環境安全評価