Adsorción de cobre (II) y cadmio (II) en suspensiones acuosas de CaCO3 biogénico nanoestructurado

Santos, Candelario Ramón de los; Barajas-Fernández, Juan; Hernández, Germán Pérez; Rivera, Miguel; Flores, Laura Lorena Díaz

doi:10.1016/j.bsecv.2018.05.003

Cited by 14 publications

(12 citation statements)

References 26 publications

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“…The SSE for the pseudo-first-order and Weber-Morris models indicated that the fit was not good. Finally, according to the HY-BRID values, the model that best adjusted to the experimental data was the pseudo-second-order as it indicated that two active sites on the adsorbent can be occupied by the same phosphate ion [68].…”

Section: Kinetic Modelingmentioning

confidence: 99%

Sanky (Corryocactus brevistylus) Peel as Low-Cost Adsorbent for Removal of Phosphate from Aqueous Solutions

et al. 2021

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This study aimed to evaluate the adsorption capacity of an adsorbent obtained using sanky peel for the removal of phosphate from aqueous solutions. The study was conducted in two stages: (1) adsorbent preparation considering yield, phosphate removal, adsorption capacity, and textural characteristics; (2) an assessment of the effectiveness of using sanky peel as an adsorbent for removing phosphates from aqueous solutions. Batch adsorption was studied in aqueous solutions containing phosphate and calcium ions with the selected adsorbent. Adsorption kinetics and equilibrium isotherms were studied using mathematical models. The adsorption kinetics followed the pseudo-second-order, Elovich, and Weber–Morris models, thus demonstrating that adsorption rates were not controlled by multiple processes. Adsorption equilibrium data fitted best with the Dubinin–Radushkevich model. Finally, a Fourier transform infrared spectroscopy analysis revealed the presence of brushite spectra bands after adsorption. The results of this study can help better understand the use of sanky peel as an adsorbent and good alternative for aqueous phosphate adsorption.

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Section: Kinetic Modelingmentioning

confidence: 99%

Sanky (Corryocactus brevistylus) Peel as Low-Cost Adsorbent for Removal of Phosphate from Aqueous Solutions

et al. 2021

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“…in a knife mill, then classified by size using ASTM sieves, obtaining three fractions "Fraction 1" was constituted of particles larger than 1.18 mm; "Fraction 2" was made up of particles from 850 µm to 1.18 mm; and "Fraction 3", of particles from 150 to 850 µm. The fractions were washed with distilled water until attaining a constant pH (Ramón de los Santos et al, 2019), then dried at 70-75°C for 24 hours (Torab-Mostaedi et al, 2013).…”

Section: Preparation Of the Biosorbentmentioning

confidence: 99%

“…Literature suggests several adsorption models to correlate adsorption data in batch systems (Ramón de los Santos et al, 2019). The kinetic study of the biosorption process was performed with the optimal values for each factor, 9 mg/L of initial metal ion concentration, pH 4.3 adjusted with 1 N NaOH and 0.1 N HCl, and 7.4 g/L of biosorbent concentration with a stirring speed of 200 rpm, during 40 min.…”

Section: Kinetic Studiesmentioning

confidence: 99%

“…Research on surfaces and adsorption phenomena has been carried out mainly by Fourier transform infrared spectroscopy (FT-IR) (Sheppard, 2017), since it is one of the available techniques to explore solid/liquid phenomena in situ, allowing for easy obtention of information about the nature of the adsorbed species, the adsorbate, speciation and mechanisms (Hind et al, 2001). It also allows the identification of the presence of functional groups of the organic and inorganic components present in the biosorbent (Ramón de los Santos et al, 2019;Rojas-Morales et al, 2016;Suárez-Vázquez et al, 2019). Some research on residues, such as rice husk (Ding et al, 2012(Ding et al, ), walnuts (Şencan et al, 2015, sugar cane (Garg et al, 2008), coconut (Shakeri et al, 2012), banana (Akpomie and Conradie, 2020), grape (Torab-Mostaedi et al, 2013), citrus peel (Chatterjee and Schiewer, 2011), grapefruit (Saikaew et al, 2009), etc.…”

Section: Introductionmentioning

confidence: 99%

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Cd (II) and Pb (II) biosorption in aqueous solutions using agricultural residues of Phaseolus vulgaris L.: Optimization, kinetics, isotherms and desorption

Salazar-Pinto¹,

Zea-Linares²,

Salas³

et al. 2020

Rev.Mex.Ing.Quim.

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“…The currently interest of using this type of biogenic source is because at that several investigations have focused on using physicochemical properties of these materials derived from powders of oyster shells as adsorbents for heavy metals such as Cd, Pb and Cu. Which have already been tested in our previous work reported [17], where the aim of that study was evaluate the adsorption capacity of biogenic CaCO3 nanostructures in the presence of metal ions (Cd 2+ and Cu 2+ ) in aqueous solutions. In this research, we presented the results of the physical-chemical characterization of biogenic CaCO3 nanostructures.…”

Section: Introductionmentioning

confidence: 99%

Effect of the thermal annealing on the phase transitions of biogenic CaCO3 nanostructures

Santos¹,

Rodríguez

Gallardo

et al. 2019

J. Mex. Chem. Soc.

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The issue of the present research lays its foundation on the proposal of the Crassostrea virginica waste oyster shells (WOS) reuse to obtain calcium carbonate powder (CaCO3) and calcium hydroxide (Ca(OH)2) nanostructured, using thermal annealing treatments. The oysters shells were subjected to a previous physical grinding process to decrease their size (smaller sizes 0.074 mm). The parameter studied was the effect of annealing temperature (500, 700 and 900 °C in air atmosphere) on the structural properties and morphology of the powders by FTIR, XRD, SEM and HRTEM. The X-ray diffraction results indicate that the WOS in their natural state and thermally annealed at 500 °C have two phases of CaCO3 the rhombohedral form for calcite with crystallite size around 24 nm and aragonite traces in orthorhombic phase. At 700 °C, the WOS powder is transformed into calcium hydroxide, also known as portlandite (Ca(OH)2), attributed to the absorption of water released during the thermal decomposition of CaCO3. This crystalline phase does not change when the temperature increases to 900 °C. The SEM and HRTEM analysis of WOS powders reveals that with a thermal annealing treatment it is possible to obtain nanostructured CaCO3. FTIR analysis demonstrates the biogenic origin of CaCO3, due to amide groups. The nanostructured CaCO3 obtained by grinding and thermal annealing of WOS, can be used as drying agent, or as additive in ceramic and glass. The issue of the present research lays its foundation on the proposal of the Crassostrea virginica waste oyster shells (WOS) reuse to obtain calcium carbonate powder (CaCO3) and calcium hydroxide (Ca(OH)2) nanostructured, using thermal annealing treatments. The oysters shells were subjected to a previous physical grinding process to decrease their size (smaller sizes 0.074 mm). The parameter studied was the effect of annealing temperature (500, 700 and 900 °C in air atmosphere) on the structural properties and morphology of the powders by FTIR, XRD, SEM and HRTEM. The X-ray diffraction results indicate that the WOS in their natural state and thermally annealed at 500 °C have two phases of CaCO3 the rhombohedral form for calcite with crystallite size around 24 nm and aragonite traces in orthorhombic phase. At 700 °C, the WOS powder is transformed into calcium hydroxide, also known as portlandite (Ca(OH)2), attributed to the absorption of water released during the thermal decomposition of CaCO3. This crystalline phase does not change when the temperature increases to 900 °C. The SEM and HRTEM analysis of WOS powders reveals that with a thermal annealing treatment it is possible to obtain nanostructured CaCO3. FTIR analysis demonstrates the biogenic origin of CaCO3, due to amide groups. The nanostructured CaCO3 obtained by grinding and thermal annealing of WOS, can be used as drying agent, or as additive in ceramic and glass.

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Adsorción de cobre (II) y cadmio (II) en suspensiones acuosas de CaCO3 biogénico nanoestructurado

Cited by 14 publications

References 26 publications

Sanky (Corryocactus brevistylus) Peel as Low-Cost Adsorbent for Removal of Phosphate from Aqueous Solutions

Sanky (Corryocactus brevistylus) Peel as Low-Cost Adsorbent for Removal of Phosphate from Aqueous Solutions

Cd (II) and Pb (II) biosorption in aqueous solutions using agricultural residues of Phaseolus vulgaris L.: Optimization, kinetics, isotherms and desorption

Effect of the thermal annealing on the phase transitions of biogenic CaCO3 nanostructures

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