| 地聚物固化生活垃圾焚烧飞灰固化体抗氧化硫杆菌腐蚀性能的研究 |
| 摘要点击 2743 全文点击 1488 投稿时间：2011-12-07 修订日期：2012-02-21 |
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| 中文关键词 地聚物 氧化硫杆菌 质量损失 抗压强度 浸出浓度 耐酸机制 |
| 英文关键词 geopolymer Thiobacillus weight loss compressive strength leaching concentration mechanism of anti-acid |
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| 中文摘要 |
| 为了探讨地聚合物固化生活垃圾焚烧飞灰后形成的固化体抗强酸性微生物的侵蚀性能,模拟氧化硫杆菌的腐蚀过程,考察经氧化硫杆菌浸泡前后地聚物固化体质量、抗压强度、浸出浓度的变化. 结果表明,地聚物固化体具有良好的抗氧化硫杆菌侵蚀能力:浸泡28 d后,质量损失<1%; 抗压强度仍达到了21.88MPa,抗蚀系数在0.9以上; 重金属Cr、Cu、Zn、Cd、Hg、Pb的最大浸出浓度仅为:107.7、22.71、39.18、0.56、34.84和3.03 μg·L-1. 并且重金属的浸出浓度随浸泡时间而降低,表明了地聚物具有良好的抗氧化硫杆菌腐蚀的性能. 实验通过X-ray衍射(XRD)、傅立叶红外光谱(FTIR)、扫描电镜(SEM)的分析对地聚物固化体的微观结构进行了表征,并探讨了地聚物固化体抗酸腐蚀性能的机制. |
| 英文摘要 |
| In order to discuss the anti-Thiobacillus corrosion performance of geopolymer solidification MSWI fly ash, the research simulated the Thiobacillus corrosion process by experiment, investigated the change of mass, compressive strength, leaching concentration. The results showed that geopolymer had a good anti-corrosion ability: weight loss within 1%, the compressive strength still reached 21.88 MPa after 28 days, the corrosion resistance coefficient was above 0.9.The maximum leaching concentration of Cr, Cu, Zn, Cd, Hg, Pb were 107.7 μg·L-1, 22.71 μg·L-1, 39.18 μg·L-1, 0.56 μg·L-1, 34.84 μg·L-1 and 3.03 μg·L-1, respectively. And the leaching concentration of geopolymer reduced with the immersion time, showed a good anti-Thiobacillus corrosion performance. Through the X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscope spectra of geopolymer, we investigated the microstructure and mechanism of geopolymer anti-corrosion. |
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