モルタル骨材としてのCIS 系廃太陽光パネルの環境安全性評価

DOI 機関リポジトリ 機関リポジトリ (HANDLE) オープンアクセス

書誌事項

タイトル別名
  • Environmental Safety Evaluation of Waste CIS Photovoltaic Panels as Aggregate for Mortar
公開日
2024-10-23
資源種別
departmental bulletin paper
DOI
  • 10.34481/0002000810
公開者
宮崎大学工学部

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説明

To evaluate the environmental safety of waste CIS photovoltaic panels mainly consisted of substrate glass as aggregate for mortar, he JIS A 5011-1 leaching and content tests were conducted for the aggregate and use-simulated samples of waste CIS photovoltaic panels. Use-simulated samples were prepared by replacing sand in the mortar by waste CIS photovoltaic panels: replacement rates by waste CIS photovoltaic panels were 0, 0.1, 1, 10 and 100%. In addition, the possibility of landfill disposal of waste CIS photovoltaic panels was investigated by using JLT13. The JIS content test results showed that waste CIS photovoltaic panels satisfied environmentally sound quality standard of all harmful items for aggregate and all use-simulated samples. The JIS leaching test results showed that aggregate and a use-simulated sample 100% replaced by waste CIS photovoltaic panels did not satisfy environmentally sound quality standard of selenium. However, use-simulated samples less than or equal to 10% replacement rate by waste CIS photovoltaic panels satisfied environmentally sound quality standard of leaching concentration of selenium. These results indicated that waste CIS photovoltaic panels could be used as aggregate for mortar under the conditions of less than or equal to 10% replacement rate by waste CIS photovoltaic panels. It was found that the mixing of waste CIS photovoltaic panels with cement might causes acceleration of selenium leaching from waste CIS photovoltaic panels during the leaching and content tests. Waste CIS photovoltaic panels could not be disposed of in a Controlled final landfill site without intermediate treatment because the selenium leaching concentration of the waste CIS photovoltaic panels were 0.36mg/L, which did not satisfy the landfill standard of 0.3mg/L.

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