One-step synthesis and characterisation of crystalline nano-calcite from phosphogysum by precipitation method

Abstract

In the present study, nano-calcium carbonate (NCC) was prepared from phosphogypsum (PG) as waste material from phosphate industry using Na2CO3 and Al(HCO3)3 as carbonates precursors. The physicochemical characteristics of the prepared nano-calcite CaCO3 were studied using various methods, including X-ray diffraction (XRD), scanning electron microscope (SEM), chemical analysis, plasma spectrometry with inductive coupling (ICP), as well as the Bernard calcimeter. The size of the pure nanocalcite particles produced differs according to the nature of the carbonate precursor; they are 51 nm and 68 with the use of sodium carbonate and aluminum hydrogen carbonate, respectively.

Novel Synthesis of Nanocalcite from Phosphogypsum and Cesium Carbonate: Control and Optimization of Particle Size

“…At temperatures higher than 40 °C, the contraction of raw materials increased due to water vaporization and that led to a decrease in the final product purity. A similar result was found in subsequent results published by our laboratory [4].…”

“…In our previous work published in [4], we compared particle size using the Scherrer formula for different compounds (Table 2). For aluminum hydrogen carbonate, we found the particle size to be approximately 68.43 nm.…”

“…All these parameters were investigated in the present study. Initially, the pH was maintained at a basic value, the temperature at an ambient level, and the stirring time at 48 h [4]. However, the concentration precursor was varied around the mole-to-mole condition while the Cs2CO3 saturation was reached.…”

“…Phosphogypsum, a byproduct of the phosphate-based fertilizer industry, has gained increasing attention as a potential raw material for the production of valuable minerals such as hydroxyapatite, fluorapatite [1,2], brushite [3], and nanocalcite [4]. These minerals are highly sought after for their diverse applications in various fields such as biomedical engineering [5,6], environmental remediation [7], and materials science.…”

Materials for energy harvesting, conversion, storage, environmental engineering and sustainability

“…Within this breathtaking background comes this special issue on materials energy harvesting, conversion, storage, environmental engineering, and sustainability. It addresses several theoretical [1][2] and experimental themes such as microfluidics [3], energy recovery and storage [4][5][6][7][8][9][10][11][12][13], water and corrosion [14][15][16], biosensors [17][18][19] and materials [19][20][21][22][23][24][25][26].…”