Preparation, characterization and application of H3PO4-activated carbon from Pentaclethra macrophylla pods for the removal of Cr(VI) in aqueous medium

Chimi, Tchatchouang; Hannah, Boresse U.; Lincold, Nintedem M.; Jacques, Mboumbouo B.; Tomé, Sylvain; Hermann, Dzoujo T.; Shikuku, Victor Odhiambo; Bissoue, Achille Nouga; Tchieta, Gerard Pierre; Meva, François Eya’ane

doi:10.1007/s13738-022-02675-9

Cited by 7 publications

(2 citation statements)

References 49 publications

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“…However, this does correspond with the resulting iodine number of each AC. This observation aligns with Chimi et al, (2023) report for the production of ACs from PMps with H3PO4 as activator. Moreover, despite potential variations of the influence of the different operating conditions, both sets of conditions exclusively yielded ACs that have average pore diameters all within the mesopore regions.…”

Section: Structural and Porous Properties Of The Activated Carbonssupporting

confidence: 93%

“…Measuring about 35 to 45 cm in length and 5 to 10 cm in breadth, these black and woody pods have become a subject of interest due to their high fibre and fixed carbon contents (Okey-Onyesolu et al, 2018). There have been a few studies looking into the effects of preparation variables like temperature and impregnation ratio on activated carbons (ACs) from PMps (Abugu et al, 2015;Chimi et al, 2023), but very little is known in the literature about whether using a chemometric tool like Response Surface Methodology (RSM) to produce ACs from PMps could allow its structure to be developed further for enhanced adsorption performance. To address this gap, this study, therefore, focused on the optimal conditions for activating the untapped potential of PMps as precursor of ACs using potassium hydroxide (KOH) and phosphoric acid (H3PO4) as activating agents and iodine adsorption characterization approach.…”

Section: Introductionmentioning

confidence: 99%

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Statistical optimization of iodine adsorption for <i>Pentaclethra macrophylla</i> pods activated carbon production

Ogbeh,

Ogunlela,

Emaikwu

2024

SWJ

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Efficient production of activated carbon (AC) depends on variables such as feedstock properties, preparation conditions, and activating agents. This study aimed to identify optimal conditions for AC production from African Oil Bean (Pentaclethra macrophylla) Pods (PMps) using potassium hydroxide (KOH) and phosphoric acid (H3PO4) as activating agents. Through a systematic iodine adsorption characterization approach and leveraging Response Surface Methodology as a chemometric tool, the study fine-tuned chemical activation and carbonization parameters (temperature, time, and impregnation ratio) for producing PMACs. The adjustments directly impacted the iodine number (In) and yields (Cy) of the PMACs (PMAC-KOHop and PMAC-H3PO4op). The predicted In and Cy values closely aligned with the observed values – (PMAC-KOHop: 918.58 mg/g predicted vs. 916.56 mg/g observed; PMAC-H3PO4op: 593.44 mg/g predicted vs. 592.88 mg/g observed) and (PMAC-KOHop: 39.60% predicted vs. 39.15% observed; PMAC-H3PO4op: 51.30% predicted vs. 51.10% observed), demonstrating precision of the production process. Key structural properties, including BET specific surface areas (SSA), total pore volumes (Vt), and average pore diameters, exhibited notable differences between the PMAC-KOHop and PMAC-H3PO4op, with the former demonstrating superiority. Particularly, FTIR spectra highlighted higher aromaticity in PMAC-KOHop, revealing the preference for KOH over H3PO4 in the chemical activation of PMps. The high In achieved with the PMAC-KOHop indicated its efficacy as a pollutant adsorbent, aligning with the established attributes of commercial granular activated carbons for pollutants removal from wastewater. This study establishes PMps as a dependable AC precursor, emphasizing the advantages of KOH over H3PO4 in chemical activation. Future research should be directed at investigating PMAC-KOHop adsorption capabilities for diverse pollutants and exploring PMps' potential contributions to metallic or nanocomposite formations with other adsorbents.

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Section: Structural and Porous Properties Of The Activated Carbonssupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Statistical optimization of iodine adsorption for <i>Pentaclethra macrophylla</i> pods activated carbon production

Ogbeh,

Ogunlela,

Emaikwu

2024

SWJ

View full text Add to dashboard Cite

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Adsorption study of methylene blue dye removal with activated carbon derived from Leucaena leucocephala wastes prepared via H3PO4 activation

Laouar,

Boukerroui,

Meziti

et al. 2024

Reac Kinet Mech Cat

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Removal of crystal violet by TiO2 loaded alkali-activated carbon hybrid material from Raphia farinifera fruit kernels: surface chemistry, parameters and mechanisms

Jacques,

Guy,

Jules

et al. 2023

Biomass Conv. Bioref.

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Preparation, characterization and application of H3PO4-activated carbon from Pentaclethra macrophylla pods for the removal of Cr(VI) in aqueous medium

Cited by 7 publications

References 49 publications

Statistical optimization of iodine adsorption for <i>Pentaclethra macrophylla</i> pods activated carbon production

Statistical optimization of iodine adsorption for <i>Pentaclethra macrophylla</i> pods activated carbon production

Adsorption study of methylene blue dye removal with activated carbon derived from Leucaena leucocephala wastes prepared via H3PO4 activation

Removal of crystal violet by TiO2 loaded alkali-activated carbon hybrid material from Raphia farinifera fruit kernels: surface chemistry, parameters and mechanisms

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