| 城市生活垃圾焚烧飞灰对CO_2的固定 |
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| 引用本文： | 蒋建国,陈懋喆,张妍,许鑫,罗曼. 城市生活垃圾焚烧飞灰对CO_2的固定[J]. 清华大学学报(自然科学版), 2008, 0(12) |
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| 作者姓名： | 蒋建国 陈懋喆 张妍 许鑫 罗曼 |
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| 作者单位： | 清华大学环境科学与工程系;中国农业大学环境学院; |
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| 基金项目： | 国家自然科学基金资助项目(50778099) |
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| 摘 要： | 为无害化处理焚烧飞灰,并实现CO2减排,利用中国城市生活垃圾焚烧飞灰作为吸附剂,固定CO2,并稳定垃圾中重金属。考察水分添加量、CO2分压等因素并进行热重-差热实验、X射线衍射及连续浸取实验。结果表明:干燥飞灰可吸收其自身质量3%的CO2;水分添加量大于10%时,纯CO2吸收效果较好;CO2的吸收及其碳酸化过程使飞灰中C a(OH)2转化为C aCO3,同时飞灰中可交换态Pb质量的40%左右转化为碳酸盐结合态而得以稳定。
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| 关 键 词： | 城市生活垃圾 焚烧飞灰 CO2固定 重金属稳定化 |
Sequestration of CO_2 using municipal solid waste incinerator fly ash |
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| JIANG Jianguo,CHEN Maozhe,ZHANG Yan,XU Xin,LUO Man. Sequestration of CO_2 using municipal solid waste incinerator fly ash[J]. Journal of Tsinghua University(Science and Technology), 2008, 0(12) |
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| Authors: | JIANG Jianguo CHEN Maozhe ZHANG Yan XU Xin LUO Man |
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| Affiliation: | JIANG Jianguo1,CHEN Maozhe1,ZHANG Yan1,XU Xin1,LUO Man2(1.Department of Environment Science , Engineering,Tsinghua University,Beijing 100084,China,2.College of Resources , Environment,China Agriculture University,Beijing 100094,China) |
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| Abstract: | Municipal solid waste(MSW) incinerator fly ash works effectively as a calcium sorbent for sequestration of CO2 to reduce CO2 emissions as well as stabilization of heavy metals in the fly ash.The effect of the water content and CO2 pressure on the capture mechanism was evaluated using thermogravimetry analysis-differential thermal analysis(TGA-DTA),X-ray diffraction(XRD) and sequential extraction procedure.The results show that the MSW incinerator fly ash can capture CO2 by 3% of the ash mass.Water contents ... |
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| Keywords: | municipal solid waste(MSW) incinerator fly ash sequestration of CO2 heavy metal stabilization |
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