Preparation, characterisation of thermally treated Algerian dolomite powders and application to azo-dye adsorption

The thermochemical activity of dolomite occurred in dolomite–palygorskite

“…Sasaki et al revealed the relationship between phase change, pore structure, adsorption, and calcination temperature. (2) The application of dolomite and activated dolomite as adsorbents of heavy metals and dyes (Pehlivan et al, 2009;Boucif et al, 2010;Albadarin et al, 2012). Albadarin et al identified the kinetics and dynamics of dolomite as an adsorbent of Cr(VI).…”

“…Pehlivan et al studied the ability of dolomite to adsorb Cu 2+ and Pb 2+ . Boucif et al (2010) investigated the adsorptive behavior of thermally treated dolomite in adsorbing azo dyes. (3) The use of thermally treated dolomite as an esterification catalyst (Ngamcharussrivichai et al, 2007;Miao et al, 2010;Yoosuk et al, 2011;Ilgen, 2012 (4) The application of dolomite as a catalyst in the catalytic pyrolysis of organic waste (Yu et al, 2009;Andrés et al, 2011;González et al, 2011;Sarıoğlan, 2012;Sun et al, 2012;Wang et al, 2012).…”

Anionic Dye Alizarin Red S Removal Using Heat-Treated Dolomite

“…Meanwhile, the KL value was about 6 L/mmol for HDol and 1.5 L/mmol for Dol, an increase in ARS affinity by a factor of 4 for HDol (Figure 2a). It was previously reported that the sorption of azo dye orange I by HDol heated to 900 °C also increased by a factor of 4 when compared to its adsorption by raw Dol [10].…”

“…In addition to clay minerals, carbonate minerals such as calcite (Cal) and dolomite (Dol) were also studied for the removal of color dyes before and after heat treatment. Previous results showed that Dol will decompose into Cal, magnesium oxide, and carbon dioxide at temperatures of 700 • C [10,11], 800 • C [12,13], or 900 • C [14]. Dol heated at 800 • C for 4 h was evaluated for the removal of dyes basic violet 16 ) from initial concentrations of 10 to 50 mg/L (constant mass volume ratio of 1.5 g/0.5 L of solution) [15].…”