Hexavalent chromium adsorption from aqueous solution using orange peel modified with calcium chloride: equilibrium and kinetics study

Tejada-Tovar, Candelaria; Herrera-Barros, Adriana; Villabona-Ort�z, A.; Gonz�lez-Delgado, A.D.; N��ez-Zarur, J.

doi:10.17485/ijst/2018/v11i17/122244

Cited by 7 publications

(7 citation statements)

References 22 publications

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Section: Resultsmentioning

confidence: 99%

“…One is that the surface may exist as a homogeneous or heterogeneous system; the other is monolayer (single surface contact) or multilayer form (readsorption caused by the adsorption force field). In addition, information concerning the energy distribution of active sites and interactions between adsorbed molecules at the solid-liquid interface is obtained [18, 39].…”

Section: Resultsmentioning

confidence: 99%

“…The peaks at 823.94 cm -1 and 708.71 cm -1 are assigned to -CH out-of-plane bending vibration on the aromatic rings [32]. Overall, these functional groups are derived from main components such as pectin, hemicellulose, and lignin [18]. The negligible differences of the OP spectral band before and after adsorption imply that the functional groups remain intact [33].…”

Section: Batch Adsorption Experimentsmentioning

confidence: 99%

“…Nevertheless, there are a few reports concerning rare earth wastewater remediation [14, 15]. The majority of studies have focused on modifying with OP to improve the adsorption capacity, and the modification methods mainly include acid [16], alkali [17], salt [18], structure [19], carbonization [20], organic solvents [21], and compound modification [22]. The whole preparation process of modified OP is shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

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Adsorption Performance of La(III) and Y(III) on Orange Peel: Impact of Experimental Variables, Isotherms, and Kinetics

Liu

Rao

Tian

et al. 2021

Adsorption Science & Technology

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To alleviate the environmental problem associated with rare earth wastewater, this research applied waste orange peel (OP) for the adsorption of La(III) and Y(III) from aqueous solution. The adsorption properties of orange peel are characterized using scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR), and the participation of hydroxyl and other oxygen-containing groups that promote the physical-chemical interaction is verified. Batch adsorption results suggest that orange peel possesses a satisfactory adsorption performance for La(III) and Y(III). The optimal adsorption conditions were obtained at pH of 6, temperature of 40°C, appropriate dosage of 2 g/L and 3 g/L, contact time of 30 min, and initial ion concentration of 32 mg/L. Under the same condition, adsorption performance of La(III) is better than that of Y(III). The experimental data is well fitted by the Langmuir isotherm model with correlation coefficient R 2 > 0.9 and the minimum standard error values. Equilibrium results show that Langmuir monolayer adsorption capacity of La(III) and Y(III) onto orange peel is up to 37.61 and 31.10 mg/g. The fitting results of kinetics prove that the adsorption process of La(III) and Y(III) follows the pseudosecond-order model. Thus, natural orange peel as a recyclable biosorbent has potential economic and applicative benefits to remove La(III) and Y(III) from aqueous solutions.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Batch Adsorption Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Adsorption Performance of La(III) and Y(III) on Orange Peel: Impact of Experimental Variables, Isotherms, and Kinetics

Liu

Rao

Tian

et al. 2021

Adsorption Science & Technology

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“…e isotherm model parameters are summarized in Table 5, reporting that the minimum sum of square was reached by Freundlich model for nickel ions and Langmuir model for lead ions; however, the di erence between both models for lead ions could be negligible. e fact that nickel ions uptake onto yam peels obeys Freundlich model indicated a biosorbent heterogeneous surface, multilayer formation and non-uniform distribution of heat of adsorption over the surface [25]. On the other hand, Langmuir model is focused on homogenous surface and adsorption process takes place on speci c sites that are available just for one molecule of sorbate [26].…”

Section: Adsorption Kinetics and Isothermsmentioning

confidence: 99%

Immobilization of Lead and Nickel Ions from Polluted Yam Peels Biomass Using Cement-Based Solidification/Stabilization Technique

Villabona-Ortíz

González-Delgado

Herrera

et al. 2019

International Journal of Chemical Engineering

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Nowadays, biomass has been employed to prepare biosorbents for heavy metals uptake; however, further disposal of polluted material has limited its application. In this work, nickel and lead removal was performed using yam peels and the resulting polluted biomass was mixed with concrete to produce bricks. The biomass was characterized by FT-IR analysis for testing functional groups diversification before and after adsorption process. The effect of adsorbent dosage, temperature, and initial solution concentration was evaluated to select suitable values of these parameters. Adsorption results were adjusted to kinetic and isotherm models to determine adsorption mechanism. Desorption experiments were also performed to determine the appropriate desorbing agent as well as its concentration. Immobilization technique of cement-based solidification/stabilization was applied and the polluted biomass was incorporated to concrete bricks at 5 and 10%. Mechanical resistance and leaching tests were carried out to analyze the suitability of heavy metals immobilization. The suitable values for dosage, temperature, and initial solution concentration were 0.5 g/L, 40°C and 100 ppm, respectively. The kinetic model that best fitted experimental results was pseudo-second order indicating a dominant physicochemical interaction between the two phases. The highest desorption yields were found in 52.47 and 74.84% for nickel and lead ions. The concrete bricks exhibited compression resistance above 5 MPa and all the leachate reported concentrations below the environmental limit. These results suggested that nickel and lead immobilization using concrete bricks is a good alternative to meet disposal problems of contaminated biomass.

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A chemometric strategy based on a Box–Behnken design to optimize the removal of hexavalent chromium from water using Pomegranate peels as an eco-friendly adsorbent

Diaf,

Bendjeffal,

Metidji

et al. 2023

Reac Kinet Mech Cat

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Hexavalent chromium adsorption from aqueous solution using orange peel modified with calcium chloride: equilibrium and kinetics study

Cited by 7 publications

References 22 publications

Adsorption Performance of La(III) and Y(III) on Orange Peel: Impact of Experimental Variables, Isotherms, and Kinetics

Adsorption Performance of La(III) and Y(III) on Orange Peel: Impact of Experimental Variables, Isotherms, and Kinetics

Immobilization of Lead and Nickel Ions from Polluted Yam Peels Biomass Using Cement-Based Solidification/Stabilization Technique

A chemometric strategy based on a Box–Behnken design to optimize the removal of hexavalent chromium from water using Pomegranate peels as an eco-friendly adsorbent

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