Accelerated leaching of heavy metals from Landfilled municipal solid waste incineration bottom ash

填埋城市固体废物焚烧底灰中重金属的加速浸出

• 批准号: 21760419
• 负责人: TAKAHASHI Fumitake
• 金额: $ 2.83万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21760419/
• 关键词: 焼却灰; 重金属; 錯体形成; 溶出; 廃棄物再資源化; 廃棄物処理; 土木環境システム; 環境技術; 環境調和型都市基盤整備・建築; 溶出促進

Assisted leaching mechanisms of heavy metals from landfilled municipal solid waste incineration bottom ash was investigated. Citric acid co-existed with urea had the largest effect on the complexation with heavy metals and promoted the leaching of some elements, in particular chromium, copper, iron, and phosphorus. Although fulvic acid generated in landfill site had great complexation capacity with copper cation, it was two orders of magnitude smaller than that of natural fulvic acid. The combination of pH-dependent leaching tests and sequential extraction tests indicated great difference between geochemical simulation results and leaching test results. This suggested that leaching mechanisms were not controlled by some dominant minerals. In addition, it is also concluded that leaching of heavy metals from bottom ash are very complex mechanisms, which consisted of dissolution, precipitation, and conversions of heavy metals to other geochemical forms during leaching.

研究了城市生活垃圾焚烧底灰中重金属的辅助浸出机理。柠檬酸与尿素共存对重金属的络合作用最大，并促进某些元素的浸出，特别是铬、铜、铁和磷。垃圾填埋场产生的黄腐酸虽然与铜阳离子具有很大的络合能力，但比天然黄腐酸小两个数量级。 pH依赖性浸出试验和序贯萃取试验相结合表明地球化学模拟结果与浸出试验结果存在很大差异。这表明浸出机制不受某些主要矿物的控制。此外，还得出结论，底灰中重金属的浸出是非常复杂的机制，包括溶解、沉淀以及浸出过程中重金属向其他地球化学形态的转化。

项目成果

粘土鉱物への銅,フルボ酸およびその錯体物の吸着挙動

铜、黄腐酸及其配合物对粘土矿物的吸附行为

• 发表时间: 2011
• 作者: 横畑一也;高橋史武;島岡隆行
• 通讯作者: 島岡隆行

重金属と一般廃棄物焼却灰由来の腐植物質の錯体形成

城市垃圾焚烧灰中重金属和腐殖质的复合物形成

• 发表时间: 2010
• 作者: 横畑一也;高橋史武;島岡隆行
• 通讯作者: 島岡隆行

上海市の焼却残渣の基本性状および塩素測定方法の検討

上海市焚烧残渣基本性质及氯测定方法研究

• 发表时间: 2010
• 作者: 久良木暢;高橋史武;島岡隆行;趙由才;柴暁利
• 通讯作者: 柴暁利

Mineralogical characterization of municipal solid waste incineration bottom ash with an emphasis on heavy metal-bearing phases.

• DOI: 10.1016/j.jhazmat.2011.01.070
• 发表时间: 2011-03
• 期刊: Journal of hazardous materials
• 影响因子: 13.6
• 作者: Yunmei Wei;T. Shimaoka;Amirhomayoun Saffarzadeh;F. Takahashi

CO2 sequestration capacity based on mineralogical composition of MSWI bottom ash and reacitivity of Ca-contianing minerals

基于城市垃圾焚烧炉底灰的矿物成分和含钙矿物的反应性的二氧化碳封存能力

• 发表时间: 2009
• 期刊: 環境工学研究論文集 46
• 作者: Yunmei WEI;Takayuki SHIMAOKA;Fumitake TAKAHASHI
• 通讯作者: Fumitake TAKAHASHI