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The primary objective of this paper was to synthesize a calcium silicate (CaSiO 3 ) and investigate the effect of CaO/SiO 2  compositions on the structure formation of synthetic material. CaSiO 3  was prepared through the solid-state method using CaO from chicken eggshells and commercial SiO2 powder as starting material. To investigate the effect of CaO/SiO 2  on the structure of CaSiO 3 , the different molar ratios of CaO/SiO 2  (i.e., 1:1, 1:7, 2:7, and 3:7) were used. BET results show the resulting product has a high specific surface area of 13,18 ±30.53 m2g-1 and a pore size of 15,16 ±18.4 nm obtained as mesoporous material. The obtained CaSiO 3  particles, then to be applied for the degradation of dye pollutants in water. The adsorption capacity was evaluated by methylene blue (MB) and brilliant green (BG) degradation. The parameters of CaO/SiO 2  mass ratio and contact time on the degradation efficiency of BG and MB were investigated, respectively. The results showed that the best model for BG adsorption onto CaSiO 3  was a pseudo-first-order model, whereas the best model for MB adsorption was a pseudo-second-order model.

iop conference series. earth and environmental science

Effect of CaO/SiO<sub>2</sub> compositions on the structure formation of mesoporous calcium silicate (CaSiO<sub>3</sub>) composite particles as adsorbent for organic dye removal

Effect of CaO/SiO2 compositions on the structure formation of mesoporous calcium silicate (CaSiO3) composite particles as adsorbent for organic dye removal

Effect of CaO/SiO₂ compositions on the structure formation of mesoporous calcium silicate (CaSiO₃) composite particles as adsorbent for organic dye removal