Malayaite ceramic pigments prepared with galvanic sludge

Synthesis of Chromium-Doped Malayaite Pigments from Wastewater Containing Low Chromium(VI)

“…The results show that the malayaite pigment is obtained at 1050°C after 2 hr, which is approximately 150°C lower than previous studies (1200 -1600°C). [13][14][15] The product presents a more saturated red color with a higher a* value of 34.1 than previous studies (Ͻ30). 16 -18 The content of malayaite is greater than 90%.…”

Elaboration of new ceramic composites containing glass fibre production wastes

“…Se prepararon diferentes mezclas de los tres componentes con 15-35 % en peso del lodo, 20% en peso del vidrio y 45-65 % en peso de las arcillas y después de prensarlas fueron tratadas térmicamente para su sinterización en un rango de temperaturas entre 1080 y 1120ºC y con diferentes condiciones. Los materiales obtenidos a temperaturas entre 1090-1100ºC y con las mejores propiedades (porosidad 38-52 %, absorción de agua 39 -47 % y densidad 1,35 -1,67 g/cm 3 , fueron los seleccionados para producción de cerámica porosa y los materiales con porosidad 0,35 -1,1 %, absorción de agua 0,7 -2,6 % y densidad 2,1 -2,3 g/cm 3 , para materiales cerámicos densos. Los resultados obtenidos indican que la incorporación de hasta un 25 % en peso del lodo es beneficiosa para la producción de ambos tipos de materiales cerámicos como lo demuestran las propiedades tecnológicas conseguidas.…”

“…In agriculture sewage sludge is used as composting material for fertilizers, because it contains organic matter created in degradation process of active sludge (bacteria) [1,2]. From literature sources is known the possibility to use sewage sludge as a pigment [3] as well as filler for clay bricks [4]. The innovative technology used for waste water treatment is hydrothermal oxidation in which generates a fine-grain mineral by-product, which is very useful for the ceramics industry due to its high content in argillaceous elements [5].…”

“…Ternary compositions were prepared from mixtures of 15 -35 wt % of sludge, 20 wt % of waste glass and 45 -65 wt % of clay and the pressed green bodies were thermally treated in sintering temperature range from 1080 to 1120 o C in different treatment conditions. Materials produced in temperature range 1090 -1100 o C with the most optimal properties -porosity 38 -52 %, water absorption 39 -47 % and bulk density 1.35 -1.67 g/cm 3 were selected for production of porous ceramics and materials showing porosity 0.35 -1.1 %, water absorption 0.7 -2.6 % and bulk density 2.1 -2.3 g/cm 3 -for dense ceramic composites. Obtained results indicated that incorporation up to 25 wt % of sewage sludge is beneficial for production of both ceramic products and glass-ceramic composites according to the technological properties.…”

Kromit Atığının Tek Pişirim Duvar Karosu Sırlarında Renklendirici Olarak Kullanılması

“…As stated in the literature, possibility of using a wide variety of inorganic wastes has become important aspect in the ceramic sector like as ceramic engobes [2][3], ceramic glazes [4][5][6][7][8], ceramic colorants or pigments [9][10][11][12][13][14][15], glass and glass-ceramics [16][17][18], bricks and roof tiles [19][20][21][22][23][24][25][26][27], and ceramic tiles [28][29][30].…”