Quantitative analysis of calcium carbonate formation in magnetized water

Sronsri, Chuchai; U-yen, Kongpop; Sittipol, Wanpasuk

doi:10.1016/j.matchemphys.2020.122735

Cited by 15 publications

(18 citation statements)

References 27 publications

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“…In addition, using Debye Scherrer's formula, the mean crystal size of CaCO3 powder is 53.306 nm. These results confirm that, a nano-order structure is formed in CaCO3 powder [7].…”

Section: Figure 1 Xrd Pattern Of Caco3 Powdersupporting

confidence: 87%

Synthesis and material characterization of calcium carbonate (CaCO₃) from the waste of chicken eggshells

Ningrum

Humaidi

Sihotang

et al. 2022

J. Phys.: Conf. Ser.

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Synthesis and basic characterization of calcium carbonate (CaCO3) material produced from the extraction of chicken egg shells is proposed. The studied method is applied for the basic analysis of the mineral CaCO3 in the field of membrane materials. Three basic characteristics of CaCO3 have been investigated, namely microstructure, crystal structure and vibrational modes. Microstructure were measured using a scanning electron microscope (SEM), while crystal structure were measured using an X-ray diffractometer (XRD). Fourier transform infra-red (FTIR) spectroscopies were used to determine the vibrational modes. Experimental results show that the morphology of the sample has the characteristics of a microstructure with a mean grain size of 3 μm, the morphology of the resulting microstructure has a loose spacing between grains so as to provide an empty space between the sample grains. The crystal structure of CaCO3 formed is trigonal and has a crystal size of 53.306 nm, indicating the formation of nano crystals in the sample, while the FTIR spectroscopies data show the appearance of the three highest peaks at wave numbers of 3637 cm−1, 1438 cm−1, and 871 cm−1, which indicates the OH strain functional groups in Ca(OH)2, CO and calcite groups, respectively. Several studies also reported that the hydroxyl and carbonation groups at similar wave numbers were 3643 cm−1, 1445 cm−1 and 877 cm−1, and at 712 cm−1, 876 cm−1, and 1425 cm−1 which correspond to C=C, CO, and CS vibrations.

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“…In addition, using Debye Scherrer's formula, the mean crystal size of CaCO3 powder is 53.306 nm. These results confirm that, a nano-order structure is formed in CaCO3 powder [7].…”

Section: Figure 1 Xrd Pattern Of Caco3 Powdersupporting

confidence: 87%

Synthesis and material characterization of calcium carbonate (CaCO₃) from the waste of chicken eggshells

Ningrum

Humaidi

Sihotang

et al. 2022

J. Phys.: Conf. Ser.

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“…13 The impact of magnetic elds on CaCO 3 formation was also investigated. 10 Thus, an increase in the magnetic ux densities from 60 to 460 mT increased the aragonite formation from 10 to 82%.…”

Section: Introductionmentioning

confidence: 94%

“…Overall, the magnetic ux density should be higher than a certain value to achieve higher scale removal. 3,4,[8][9][10][11][12][13] The magnetic effect depends on the characteristics of the solution (e.g., salt concentration, ionic strength, and pH). 4,14 Some studies measured the scale deposition rate on pipe walls, 1 and others measured the rate of calcite growth inhibition under the magnetic effect.…”

Section: Introductionmentioning

confidence: 99%

Effect of the magnetic field produced by a Halbach array magnetizer on water UV absorption, removal of scale and change in calcium carbonate polymorphs

2022

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“…To prepare the infrared adsorption sample, each non-soluble (NSP30, NSP50, and NSP80) and recrystallized (RCP30, RCP50, and RCP80) product was homogeneously mixed with the potassium bromide (KBr, spectroscopic grade) powder at the mass ratio of 1:10 [19]. The obtained mixture was compressed into a small pellet form using manual hydraulic press and then placed inside a sample holder of the infrared spectrophotometer [20]. Thermal decomposition behavior of the recrystallized samples was analyzed by thermogravimetric/differential thermal analysis (TG/DTA, Pyris Diamond, Perkin Elmer) instrument.…”

Section: Characterizationmentioning

confidence: 99%

Recrystallization of Triple Superphosphate Produced From Oyster Shell Waste for Agronomic Performance and Environmental Issue

Seesanong¹,

Seangarun²,

Boonchom³

et al. 2022

Preprint

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Calcium dihydrogen phosphate monohydrate [Ca(H2PO4)2·H2O] (a fertilizer) was successfully synthesized by the recrystallization process by using a prepared triple superphosphate (TSP) that derived from oyster shell waste as starting material. This bio-green, eco-friendly process to produce an important fertilizer can promote a sustainable society. The shell-waste-derived TSP was dissolved in distilled water and kept at 30, 50, and 80 °C. Non-soluble powder and TSP solution were obtained. The TSP solution fraction were then dried and the recrystallized products (RCP30, RCP50, and RCP80) were obtained and confirmed as Ca(H2PO4)2·H2O. Whereas the non-soluble products (NSP30, NSP50, and NSP80) were observed as calcium hydrogen phosphate dihydrate (CaHPO4·2H2O). The recrystallized yields of RCP30, RCP50, and RCP80 were found to be 51.0%, 49.6%, and 46.3%, whereas the soluble percentages were 98.72%, 99.16%, and 96.63%, respectively. RCP30 shows different morphological plate sizes, while RCP50 and RCP80 present the coagulate crystal plates. X-ray diffractograms confirm the formation of both the NSP and RCP. The infrared adsorption spectra confirmed the vibrational characteristics of HPO42‒, H2PO4‒ and H2O existed in CaHPO4·2H2O and Ca(H2PO4)2·H2O. Three thermal dehydration steps of Ca(H2PO4)2·H2O (physisorbed water, polycondensation, and re-polycondensation) were observed. Ca(H2PO4)2 and CaH2P2O7 are the thermodecomposed products from the first and second steps, whereas the final product is CaP2O6.

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Quantitative analysis of calcium carbonate formation in magnetized water

Cited by 15 publications

References 27 publications

Synthesis and material characterization of calcium carbonate (CaCO₃) from the waste of chicken eggshells

Synthesis and material characterization of calcium carbonate (CaCO₃) from the waste of chicken eggshells

Effect of the magnetic field produced by a Halbach array magnetizer on water UV absorption, removal of scale and change in calcium carbonate polymorphs

Recrystallization of Triple Superphosphate Produced From Oyster Shell Waste for Agronomic Performance and Environmental Issue

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Quantitative analysis of calcium carbonate formation in magnetized water

Cited by 15 publications

References 27 publications

Synthesis and material characterization of calcium carbonate (CaCO3) from the waste of chicken eggshells

Synthesis and material characterization of calcium carbonate (CaCO3) from the waste of chicken eggshells

Effect of the magnetic field produced by a Halbach array magnetizer on water UV absorption, removal of scale and change in calcium carbonate polymorphs

Recrystallization of Triple Superphosphate Produced From Oyster Shell Waste for Agronomic Performance and Environmental Issue

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Synthesis and material characterization of calcium carbonate (CaCO₃) from the waste of chicken eggshells

Synthesis and material characterization of calcium carbonate (CaCO₃) from the waste of chicken eggshells