Removal of lead (II) ions from water using chitosan/polyester crosslinked spheres derived from chitosan and glycerol-based polyester

Ekrayem, Nooraddein A.; Alhwaige, Almahdi A.; Elhrari, Wael; Amer, Mohamed E.

doi:10.1016/j.jece.2021.106628

Cited by 25 publications

(5 citation statements)

References 54 publications

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“…Therefore, they are chosen with the correlation coefficient (R 2 ) value being especially close to 1. Finally, the CB, CFB, and CBF corresponded to the Freundlich model with an R 2 of 0.992, 0.992, and 0.994, respectively, which agrees with other studies [68,[74][75][76]. As a result, the adsorption patterns of the CB, CFB, and CBF were explained by the physiochemical process, which was presented to the heterogeneous surfaces of all of the materials.…”

Section: Adsorption Kineticssupporting

confidence: 89%

“…The adsorption isotherms of chitosan powder beads (CB), chitosan powder mixed with goethite beads (CFB), and chitosan powder beads coated with goethite (CBF) were observed by plotting linear Langmuir (Ce/qe vs. Ce) and linear Freundlich (log qe vs. log Ce) models, whereby their plotted graphs are presented in Figures 9a,b and 10, and the equilibrium of linear isotherm parameters are reported in Table 4. [68,[74][75][76]. As a result, the adsorption patterns of the CB, CFB, and CBF were explained by the physiochemical process, which was presented to the heterogeneous surfaces of all of the materials.…”

Section: Adsorption Isothermsmentioning

confidence: 89%

“…ChemEngineering 2023, 7, x FOR PEER REVIEW 15 of 26 the chitosan materials were protonated, and the competition with proton (H + ) between the solution and the cation of lead might be the limit for lead removal [66]. Furthermore, many previous studies have reported that the point of zero charge (pHpzc) of chitosan material was pH > 4 [46,63,67,68], and so lead removal might happen at a pH of solution more than pHpzc (pH > 4). At pH 5, the lead removal efficiencies of the CB, CFB, and CBF increased to 99.41%, 99.49%, and 99.68%, respectively, which were the highest lead removal efficiencies in the entire pH range studied.…”

Section: Effect Of Phmentioning

confidence: 99%

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Adsorption of Lead (II) Ions onto Goethite Chitosan Beads: Isotherms, Kinetics, and Mechanism Studies

Sirijaree,

Praipipat

2023

ChemEngineering

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Lead is a highly toxic heavy metal that creates a water pollutant. It can be released from industrial processes, agricultural chemistry, and community wastes, affecting creatures and human health even at a low concentration. As a result, it is advised that lead be removed before releasing wastewater into the environment. This study synthesized three chitosan bead materials from shrimp shell wastes which were chitosan powder beads (CB), chitosan powder mixed with goethite beads (CFB), and chitosan powder beads coated with goethite (CBF) for removing lead in an aqueous solution. Their surface area, pore volumes, and pore sizes were explored according to Brunauer– Emmett–Teller, and their crystalline formations were investigated using an X-ray diffractometer. Their surface structures were studied using field emission scanning electron microscopy and a focus ion beam, and their chemical compositions were determined using an energy dispersive X-ray spectrometer. Their chemical functional groups were identified via Fourier-transform infrared spectroscopy. In addition, batch experiments were conducted to investigate the effects of several factors on removing lead, and the adsorption isotherm and kinetics were also investigated for determining their adsorption pattern and mechanism. In addition, the desorption experiments were studied to confirm their possible material reusability. The CBF demonstrated the highest surface area and smallest pore size compared with the other materials. In addition, the pore sizes of the CFB and CBF were micropores, whereas those of the CB were mesopores. All materials were semicrystalline structures, and the specific goethite peaks were observed in the CFB and CBF. All materials had spherical shapes with heterogeneous surfaces. Six chemical components of O, C, Ca, N, Cl, and Na were discovered in all materials, and Fe was only found in the CFB and CBF because of the addition of goethite. Five main chemical functional groups of N–H, O–H, C–H, C–O, and –COOH were found in all materials. The optimum conditions of the CB, CFB, and CBF for removing lead were 0.5 g, 16 h, pH 5, 0.5 g, 16 h, pH 5, and 0.4 g, 14 h, pH 5, respectively. The results of the batch experiments demonstrated that the CB, CFB, and CBF were high-efficiency adsorbents for removing lead in solution by more than 95%, whereby the CBF showed the highest lead removal of 99%. The Freundlich isotherm model and pseudo-second-order kinetic model helped to well explain their adsorption pattern and mechanism. The maximum lead adsorption capacities of the CB, CFB, and CBF were 322.58, 333.33, and 344.83 mg/g, respectively. Furthermore, all chitosan materials can be reused for more than three cycles with high lead removal by more than 94%; so, they are potential materials for application in industrial applications.

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Section: Adsorption Kineticssupporting

confidence: 89%

Section: Adsorption Isothermsmentioning

confidence: 89%

Section: Effect Of Phmentioning

confidence: 99%

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Adsorption of Lead (II) Ions onto Goethite Chitosan Beads: Isotherms, Kinetics, and Mechanism Studies

Sirijaree,

Praipipat

2023

ChemEngineering

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“…In addition, it also has the ability to process a high volume of wastewater minus the production of noxious sludge [ 13 ]. Low-cost and environmentally friendly adsorbents such as chitosan [ 14 , 15 ], clay materials [ 16 , 17 , 18 ], rice husk ash [ 19 ], spent coffee ground [ 20 ], crab shells [ 21 ], and tea leaves [ 22 ] have recently gained attention as alternatives to commercial adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Fixed-Bed Adsorption of Lead from Aqueous Solution Using Chitosan-Coated Bentonite

Futalan

Wan

2022

IJERPH

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In this study, fixed-bed adsorption of Pb(II) from an aqueous solution using chitosan-coated bentonite (CCB) was investigated. Characterization of CCB was performed using Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The effects of varying bed height (1.3 to 4.3 cm), flow rate (0.20 to 0.60 mL/min), and initial concentration (500 to 1500 mg/L) on the length of mass transfer zone (Zm) and adsorption capacity at breakthrough (qb) and exhaustion (qe) were examined. Low flow rate and high bed height were determined to cause a longer time to reach breakthrough and exhaustion. Meanwhile, the fixed-bed system was observed to quickly attain breakthrough and exhaustion under high initial concentrations. Kinetic column models such as the Thomas, Yoon–Nelson, and Clark models were used to predict the breakthrough curves. High R2 values (0.9758 ≤ R2 ≤ 0.8087) were attained for the Thomas model, which indicates that there is good agreement between experimental data and linear plots generated by the Thomas model. Moreover, the Thomas model is best in describing the breakthrough curves of Pb(II) removal under a fixed-bed system.

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“…The crosslinked-chitosan derivatives were reported to have improved adsorption capacity on metal ions, organometallic compounds, and inorganic salts. [32][33][34][35][36][37] The chemical structure of GCC was characterized by Fourier transform infrared spectroscopy (FT-IR) and 13 C nuclear magnetic resonance ( 13 C NMR). Thermogravimetric analysis (TGA), scanning electron microscopy (SEM), X-ray diffraction (XRD) characterizations were conducted to evaluate the physical properties of chitosan and GCC.…”

Section: Introductionmentioning

confidence: 99%

Adsorption property and mechanism of glutaraldehyde-crosslinked chitosan for removal of 2,4-dichlorophenoxyacetic acid from water

Yang

et al. 2023

Environ. Sci.: Water Res. Technol.

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Removal of lead (II) ions from water using chitosan/polyester crosslinked spheres derived from chitosan and glycerol-based polyester

Cited by 25 publications

References 54 publications

Adsorption of Lead (II) Ions onto Goethite Chitosan Beads: Isotherms, Kinetics, and Mechanism Studies

Adsorption of Lead (II) Ions onto Goethite Chitosan Beads: Isotherms, Kinetics, and Mechanism Studies

Fixed-Bed Adsorption of Lead from Aqueous Solution Using Chitosan-Coated Bentonite

Adsorption property and mechanism of glutaraldehyde-crosslinked chitosan for removal of 2,4-dichlorophenoxyacetic acid from water

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