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Ceramization of heavy metals in (Ba1−X Mx)Al2Si2O8 celsian solidsolutions and recycling as pigments

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Figure 1. XRD patterns of samples: a) (Ba 1-X M x )Al 2 Si 2 O 8  M=Co, x=0,02 and 0.1 powders  fired at 1500ºC, b) the composition (a) with additions of boric acid (wt%) fired at 1000ºC
Figure 2. UV-Vis-NIR spectroscopy of glazed samples: a) (Ba 1-X M x )Al 2 Si 2 O 8  fired at 1500ºC  and SEM micrograph of the x=0,1 corresponding powder, b) M=Co mineralized by progressive
Table 1. XRD evolution of crystalline phases for samples (Ba 1-X M x )Al 2 Si 2 O 8  with  temperature
Table 2. CIEL*a*b*measurements for powders and 5wt% glazed tiles of (Ba 1-X M x )Al 2 Si 2 O 8 samples fired at 1500ºC

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