The application of eggshells and sugarcane bagasse as potential biomaterials in the removal of heavy metals from aqueous solutions

Harripersadth, Charlene; Musonge, Paul; Isa, Yusuf Makarfi; García‐Morales, M.; Sayago, Ana

doi:10.1016/j.sajce.2020.08.002

Cited by 37 publications

(26 citation statements)

References 37 publications

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“…From earlier batch studies [38], the removal of Pb ions followed the pseudo-secondorder reaction kinetics with the equilibrium data following the Langmuir isotherm which are two assumptions of the Thomas model suggesting that this model is a good fit to the experimental data. However, with model, caution should be exercised since the adsorption process is not solely limited by chemical interaction kinetics and is often controlled by interphase mass transfer resistances as stated by Aksu and Gönen [46].…”

Section: Application Of the Thomas Modelmentioning

confidence: 85%

“…Fixed bed experiments were conducted to investigate the effect of bed depth (4, 8 and 12 cm) on the performance of the five adsorbents (eggshells, bagasse, adsorbent 3:1, adsorbent 1:1 and adsorbent 1:3) at a constant flowrate of 4 mL/min, an initial Pb concentration of 100 mg/L at pH 5.5 which was determined as the optimum pH in earlier studies [38]. Breakthrough curves were plotted as shown in Appendix A and the results presented in Table 2.…”

Section: Breakthrough Curvementioning

confidence: 99%

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The Dynamic Behaviour of a Binary Adsorbent in a Fixed Bed Column for the Removal of Pb2+ Ions from Contaminated Water Bodies

Harripersadth

Musonge

2022

Sustainability

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In the search for a technically efficient and abundant adsorbent in water treatment processes, a bio-composite adsorbent derived from agricultural wastes has been identified as a potential candidate. In this study, eggshells and sugarcane bagasse were combined in varied proportions (1:0, 1:3, 1:1, 3:1 and 0:1) and applied as biosorbents in a lab-scale adsorption column. The effect of bed depth (4–12 cm) of the biosorbents was investigated which enabled the prediction of breakthrough curves for the removal of Pb (II) ions. The life span of the column was extended by increasing the bed depth of the column. The binary adsorbent of 1:3 weight ratio of <75 µm particle size showcased the highest removal efficiency of 91% at a bed depth of 12 cm. The mass transfer zone (MTZ) increased with increasing bed depth with a minor portion of the bed left unused, signifying that the process was highly efficient. The Thomas model constant, KTh, decreased with increasing bed depth with the maximum amount of Pb adsorbed being 28.27 mg/g. With the Yoon–Nelson model, KYN decreased with an increase in τ as the bed height increased. In this study, a novel approach was adopted where the proposed methodology enabled the use of a bio-composite adsorbent in heavy metal removal. The findings of this research will aid in the design and optimisation of the pilot-scale operation of environmentally friendly treatment options for metal laden effluent.

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Section: Application Of the Thomas Modelmentioning

confidence: 85%

Section: Breakthrough Curvementioning

confidence: 99%

The Dynamic Behaviour of a Binary Adsorbent in a Fixed Bed Column for the Removal of Pb2+ Ions from Contaminated Water Bodies

Harripersadth

Musonge

2022

Sustainability

Self Cite

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“…Actually, the biomass precursor as feedstock for biosorbents production is diverse, beginning with fruits [7][8][9], vegetables [10,11], or by-products resulting from numerous industrial agri-food processes [12,13]. Also, biosorbents have been used as such, or different types of pre-treatments have been applied [14] in order to increase their capacity to retain contaminants.…”

Section: Introductionmentioning

confidence: 99%

Innovative Recovery of Winemaking Waste for Effective Lead Removal from Wastewater

et al. 2022

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Every year, important quantities of winemaking waste create problems for wine producers. These problems arise from the difficulty of disposing of grape marc, which can pollute the environment and affect nearby agricultural crops. The present research proposes a new direction for the valorization of this agri-food waste in residual water depollution. Four biomaterials obtained from winemaking waste were tested for Pb removal: raw Merlot grape marc (MR), raw Sauvignon Blanc grape marc (SbR), Merlot grape marc biorefined (ME) and Sauvignon Blanc grape marc biorefined (SbE). The effects of biosorbent mass and initial Pb concentration, adsorption kinetic, equilibrium isotherms and the matrix influence from a mine effluent were assessed. Very good perspectives for the practical application in lead uptake from wastewaters arise, with better results for biorefined grape marc compared to raw material. The lead removal percentage from an initial solution containing 20 mg Pb/L, at optimum pH (5.5 ± 0.5) was 71%—MR, 78%—SbR, 80%—ME, and 97%—SbE. A Langmuir model revealed a very good removal capacity for ME (40 mg/g) and SbE (64 mg/g). Thus, the grape marc, a polluting waste, can turn into a low-cost and easy-to-prepare sorbent for the bioremediation of contaminated water.

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“…The Elovich kinetic model described the Pb adsorption process well and suggested removal processes, including ion exchange, electrostatic adsorption, and complexation, between BEP and Pb. Isa et al [ 23 ] proposed the use of two natural agro-wastes composed of eggshells and sugarcane bagasse as potential adsorbents in the removal of Pb (II) and Cd (II) from aqueous solutions. The maximum concentrations of Pb and Cd absorbed per gram of biosorbent were determined to be 277.8 and 13.62 mg/g for eggshells and 31.45 and 19.49 mg/g for bagasse, respectively.…”

Section: Introductionmentioning

confidence: 99%

Development and Characterization of the Biodegradable Film Derived from Eggshell and Cornstarch

Vonnie

Rovina

Azhar

et al. 2022

JFB

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In the current study, cornstarch (CS) and eggshell powder (ESP) were combined using a casting technique to develop a biodegradable film that was further morphologically and physicochemically characterized using standard methods. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to characterize the morphology of the ESP/CS film, and the surface of the film was found to have a smooth structure with no cracks, a spherical and porous irregular shape, and visible phase separation, which explains their large surface area. In addition, the energy dispersive X-ray (EDX) analysis indicated that the ESP particles were made of calcium carbonate and the ESP contained carbon in the graphite form. Fourier Transform Infrared Spectroscopy indicated the presence of carbonated minerals in the ESP/CS film which shows that ESP/CS film might serve as a promising adsorbent. Due to the inductive effect of the O–C–O bond on calcium carbonate in the eggshell, it was discovered that the ESP/CS film significantly improves physical properties, moisture content, swelling power, water solubility, and water absorption compared to the control CS film. The enhancement of the physicochemical properties of the ESP/CS film was principally due to the intra and intermolecular interactions between ESP and CS molecules. As a result, this film can potentially be used as a synergistic adsorbent for various target analytes.

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The application of eggshells and sugarcane bagasse as potential biomaterials in the removal of heavy metals from aqueous solutions

Cited by 37 publications

References 37 publications

The Dynamic Behaviour of a Binary Adsorbent in a Fixed Bed Column for the Removal of Pb2+ Ions from Contaminated Water Bodies

The Dynamic Behaviour of a Binary Adsorbent in a Fixed Bed Column for the Removal of Pb2+ Ions from Contaminated Water Bodies

Innovative Recovery of Winemaking Waste for Effective Lead Removal from Wastewater

Development and Characterization of the Biodegradable Film Derived from Eggshell and Cornstarch

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