Department of Applied Physics, University of Huelva, Huelva, Spain.
J Hazard Mater. 2011 Jul 15;191(1-3):269-76. doi: 10.1016/j.jhazmat.2011.04.075. Epub 2011 Apr 23.
In order to find a potential valorization of a waste generated in the industrial process devoted to the production of TiO(2) pigments, and as an essential and basic step, this waste must firstly be physically and chemically characterized. Moreover, the content of radioactivity is taken in to account due to it comes from a NORM (Naturally Occurring Radioactive Material) industry. With this end, microscopic studies were performed by applying scanning electron microscopy with X-ray microanalysis (SEM-XRMA), while the mineralogical compositions were carried out by means of the X-ray diffraction (XRD) technique. The concentrations of its major elements were determined by X-ray fluorescence (XRF), while heavy metals and other trace elements were ascertained through Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The results obtained for this waste have revealed several lines of research into potential applications. Firstly, with the refractory properties of mineral phases observed leading to a possible use in the ceramics industry or in thermal isolators. And secondly, attending to the characteristic particle-size spectra can be used as an additive in the manufacture of cement and finally, its high concentration of titanium may be used as a bactericide in brick production.
为了寻找一种可能的方法来利用在生产 TiO(2)颜料的工业过程中产生的废物，作为一个基本和必要的步骤，首先必须对这种废物进行物理和化学特性分析。此外，由于它来自于天然放射性物质（NORM）行业，因此必须考虑放射性含量。为此，通过扫描电子显微镜和 X 射线微分析（SEM-XRMA）进行了微观研究，而矿物成分则通过 X 射线衍射（XRD）技术进行了研究。通过 X 射线荧光（XRF）测定了其主要元素的浓度，而通过电感耦合等离子体质谱（ICP-MS）则确定了重金属和其他微量元素的含量。对这种废物的研究结果表明，有几条潜在的应用研究路线。首先，观察到矿物相的耐火性能可能使其在陶瓷工业或隔热材料中得到应用。其次，考虑到特征粒度谱，可以将其用作水泥制造中的添加剂，最后，其高浓度的钛可用作砖生产中的杀菌剂。
