Facile green synthesis of bio-carbon material from eggshells and its application for the removal of Bisphenol A and 2,4,6-trichlorophenol from water

Adebowale, Kayode O.; Egbedina, Abisola Opeyemi

doi:10.1016/j.enmm.2021.100622

Cited by 7 publications

(5 citation statements)

References 41 publications

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“…The initial deprotonation of BPA occurs at pH 8, whereas the second occurs around pH 9. 42 Adsorption peaked at pH 10 for BECH-K (Fig. 8c), while that of BECH was at pH 4 after which a gradual drop in adsorption occurred.…”

Section: Resultsmentioning

confidence: 97%

A porous bentonite–coconut husk composite for the enhanced adsorption of selected emerging contaminants from aqueous solution

Egbedina,

Odejobi,

Akinbile

et al. 2023

Environ. Sci.: Adv.

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Section: Resultsmentioning

confidence: 97%

A porous bentonite–coconut husk composite for the enhanced adsorption of selected emerging contaminants from aqueous solution

Egbedina,

Odejobi,

Akinbile

et al. 2023

Environ. Sci.: Adv.

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“…It is important to consider the influence of pH on the removal of AMX and TET on PS. pH affects the chemistry of the adsorbent and the adsorbate (Adebowale & Egbedina 2022). The adsorption capacity of AMX is greatest at pH 7 (3.3 mg/g) and lowest at pH 2 (2.83 mg/g) as shown in Figure 1.5.…”

Section: Effect Of Phmentioning

confidence: 96%

Adsorption of Frequently Used Antibiotics From Contaminated Water Using Peanut Shells

Egbedina¹,

Sulaimon²

2022

JMESR

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The removal of pharmaceutical contaminants from water using cost-efficient and environmentally friendly adsorbents has proven to be extremely effective. The adsorption of amoxicillin (AMX) and tetracycline (TET) from wastewater using peanut shells (PS) were described in this study. The PS was characterized using Fourier Transform Infrared (FTIR) spectroscopy, Scanning Electron Microscopy (SEM), and Energy Dispersive X-ray (EDX) techniques. The pH at the point of zero charge (pHpzc) of PS was determined to be 6.5. The influence of operating parameters such as pH, time, initial concentration, adsorbent mass and temperature on the adsorption were evaluated. The adsorption data best fit the Sips isotherm with R2 value of 0.999 for both AMX and TET and the maximum adsorption capacities of PS were obtained to be 42.47 mg g-1 for TET and 61.44 mg g-1 for AMX. Adsorption data were found to fit the pseudo first-order kinetic model for both AMX and TET. Thermodynamic parameters ΔG, ΔH and ΔS were determined to be 3.86, -8.88 and -41.36 for TET adsorption and -2.74, -16.64 and -45.15 for AMX adsorption. The negative ΔH values show that both adsorptions were exothermic while the ΔG values show that the adsorption was spontaneous for AMX and non-spontaneous for TET. The results show peanut shells is effective for the removal of AMX and TET from wastewater.

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“…The extensive production and use of BPA has led to its widespread presence in the environment, and it has even been detected in drinking water [2][3][4]. Currently, numerous technologies have been developed to eliminate BPA, including advanced oxidation processes, biodegradation, membrane separation, adsorption [5][6][7][8], and more. In fact, a large number of researchers believe that adsorption [9,10] is better than other methods, as it can quickly and effectively adsorb pollutants.…”

Section: Introductionmentioning

confidence: 99%

Removal of Bisphenol A from Water by Single-Walled Carbon Nanotubes Loaded with Iron Oxide Nanoparticles

Chen,

Jiang,

Sheng

2024

Applied Sciences

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Single-walled carbon nanotubes (SWCNTs) loaded with magnetic iron oxide nanoparticles were prepared by the arc discharge method and air heat treatment. The nanocomposite was characterized by X-ray diffraction, scanning electron microscopy, Raman spectroscopy, vibrating sample magnetometry, etc. The results showed that the heat-treated nanocomposites (SWCNTs/FexOy) had iron oxide phases and superparamagnetic properties with a saturation magnetization of 33.32 emu/g. Compared with the non-heat-treated materials, SWCNTs/FexOy had a larger specific surface area and pore volume. Using SWCNTs/FexOy to remove the organic contaminant (bisphenol A, BPA), it was found that under the conditions of pH = 3 and adsorbent dosage of 0.2 g/L, the maximum adsorption capacity of the composite was 117 mg/g, and the adsorption could reach more than 90% in only 5 min when the BPA content was below 0.05 mmol/L. The fitting results of the Langmuir and D-R models are more consistent with the experimental data, indicating a relatively uniform distribution of the adsorption sites and that the adsorption process is more consistent with physical adsorption. The kinetic calculations showed that the SWCNTs/FexOy exhibits chemical effects on both the surface and the gap, and the adsorption process is controlled by the π-π bonds and the hydrophobicity of the SWCNTs/FexOy.

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Facile green synthesis of bio-carbon material from eggshells and its application for the removal of Bisphenol A and 2,4,6-trichlorophenol from water

Cited by 7 publications

References 41 publications

A porous bentonite–coconut husk composite for the enhanced adsorption of selected emerging contaminants from aqueous solution

A porous bentonite–coconut husk composite for the enhanced adsorption of selected emerging contaminants from aqueous solution

Adsorption of Frequently Used Antibiotics From Contaminated Water Using Peanut Shells

Removal of Bisphenol A from Water by Single-Walled Carbon Nanotubes Loaded with Iron Oxide Nanoparticles

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