Department of Physical Chemistry, Faculty of Environmental Sciences, University of Castilla-La Mancha, Avenida Carlos III, s/n, 45071 Toledo, Spain.
J Environ Manage. 2012 Oct 30;109:43-53. doi: 10.1016/j.jenvman.2012.05.007. Epub 2012 Jun 7.
The optimized BCR sequential extraction procedure was applied to washing aggregate sludge and fly ash, the raw materials used to produce artificial lightweight aggregates (LWAs) in a previous study. The mixtures of the raw materials and the two types of LWAs obtained have also undergone this procedure. As a result, it has been possible to evaluate the effects of the heating process on the extraction behaviour of twenty-eight elements. The thermal process reduces the availability of all the studied heavy metals, with the exception of Mo. The availability of the other elements is also reduced, with the exceptions of As and Sb, which increase in the non-residual fractions.
优化后的 BCR 连续提取程序应用于洗涤集料污泥和飞灰，这些原料用于在之前的研究中生产人造轻集料 (LWA)。原材料和两种类型的 LWA 的混合物也经过了此程序。因此，可以评估加热过程对二十八种元素提取行为的影响。热过程降低了所有研究重金属的有效性，除了 Mo。其他元素的有效性也降低了，但 As 和 Sb 除外，它们在非残留部分增加。
