Chen Mengjun, Zhang Fu-Shen, Zhu Jianxin
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.
J Hazard Mater. 2009 Jun 15;165(1-3):980-6. doi: 10.1016/j.jhazmat.2008.10.098. Epub 2008 Nov 5.
A novel process for the treatment of hazardous waste Cathode Ray Tube (CRT) glass, based on self-propagating reaction, was proposed. In the process, various types of CRT glass powders were blended with suitable amount of ferric oxide and magnesium, and the mixtures could generate self-propagating reaction once locally ignited by a thermal source. Generally, the self-propagating reaction could be well maintained when the CRT glass content in the mixture was no more than 60 wt.%, and the combustion wave velocity and maximum combustion temperature decreased along with the increase in glass amount. XPS experiments showed that heavy elements in the final products became more stable and were solidified during the process. Leaching tests demonstrated that heavy metals in the final products fulfilled the environmental regulations of USEPA. It is supposed that the detoxified products have the potential of being used as construction materials.
提出了一种基于自蔓延反应的危险废物阴极射线管（CRT）玻璃处理新工艺。在此工艺中，将各类CRT玻璃粉末与适量的氧化铁和镁混合，混合物一旦被热源局部点燃就能产生自蔓延反应。通常，当混合物中CRT玻璃含量不超过60 wt.%时，自蔓延反应能够良好维持，且燃烧波速度和最高燃烧温度会随着玻璃量的增加而降低。X射线光电子能谱（XPS）实验表明，最终产物中的重金属变得更加稳定并在此过程中固化。浸出试验表明，最终产物中的重金属符合美国环境保护局（USEPA）的环境法规。据推测，解毒后的产物有作为建筑材料使用的潜力。
