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Kinetics of the formation and destruction of PCDD/Fs in a laboratory tubular furnace
Chemosphere ( IF 8.1 ) Pub Date : 2021-03-04 , DOI: 10.1016/j.chemosphere.2021.130175
D. Palmer , J.O. Pou , J. Díaz-Ferrero , Juan A. Conesa , N. Ortuño

A kinetic model has been developed for the formation of selected congeners of PCDD/Fs during the thermal decomposition of different wastes in a horizontal reactor. Previously published data on the decomposition of wastes have been correlated using a kinetic model that only considers process parameters, such as the presence of different amounts of oxygen in the atmosphere of reaction, chlorine and metals in the waste. The effect of both chlorine and metals is modelled through an equation assuming a “saturation effect”, i.e., that a certain amount of each substance produces the maximum rate, and that higher amounts do not increase the rate. The presence of oxygen is modelled by a destruction reaction over part of the PCDD/Fs produced. The model, which uses data from more than 64 experiments, correlated the emissions of three selected congeners: 1,2,3,6,7,8-HxCDD, OCDF and 2,3,7,8-TCDF, which are enough to estimate the total amount and toxicity of an emission.



中文翻译:

实验室管式炉中PCDD / Fs形成和破坏的动力学

建立了动力学模型,用于在卧式反应器中不同废物的热分解过程中形成选定的PCDD / F同类物。以前发布的有关废物分解的数据已经使用动力学模型进行了关联,该模型仅考虑工艺参数,例如反应气氛中存在不同量的氧气,废物中的氯和金属。氯和金属的作用均通过假设“饱和效应”的方程式进行建模,即,一定数量的每种物质产生最大速率,而更高的含量则不会增加速率。氧的存在是通过对部分产生的PCDD / Fs进行破坏反应来模拟的。该模型使用了来自64个以上实验的数据,将三个选定同类物的排放量进行了关联:1、2,

更新日期:2021-03-10
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