Evaluation of resource value and development of recovery process of buried metal in waste landfills

垃圾填埋场埋藏金属资源价值评价及回收工艺开发

• 批准号: 22760652
• 负责人: ISHIGAKI Tomonori
• 金额: $ 2.5万
• 依托单位: National Institute for Environmental Studies
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22760652/
• 关键词: 有価物回収; 金属回収; 鉄酸化細菌; バイオリーチング; レアメタル

Abundance and leachability of several base metals and rare metals were identified in waste landfills. Estimation of multi-chemical composition indicated that the leaching and recovery of metals from waste must be applied during the stabilized phase of waste landfills. Feasibility of bioleaching for waste sample was examined. Efficiency of mixed culture of sulfur-oxidizing bacteria and iron-oxidizing bacteria as inoculums has been shown. Bioleaching of excavated waste from the landfill by electric incubation of iron-oxidizing bacterium indicated the efficiency of mobilization of metals contained in the waste. Waste landfills should possess high value of metal resources, indicating the high feasibility of biological metal recovery.

在垃圾填埋场中发现了几种贱金属和稀有金属的可吸收性和可再生性。多化学成分的估算表明，在垃圾填埋场的稳定化阶段，必须对垃圾中的金属进行浸出和回收。考察了生物浸矿法处理废弃物的可行性。硫氧化细菌和铁氧化细菌混合培养作为接种物的效果已经被证明。通过电培养铁氧化细菌对垃圾填埋场挖掘出的垃圾进行生物淋滤，表明了垃圾中金属的活化效率。垃圾填埋场应具有较高的金属资源价值，表明生物金属回收的可行性较高。

项目成果

廃棄物埋立地における金属の可溶化促進に関する研究

垃圾填埋场促进金属增溶的研究

• 发表时间: 2011
• 作者: 石垣智基;冨永幸;田中宏和
• 通讯作者: 田中宏和