Experimental and theoretical studies of the adsorption of Cu and Ni ions from wastewater by hydroxyapatite derived from eggshells

Ayodele, Olajide; Olusegun, Sunday J.; Oluwasina, Olugbenga Oludayo; Okoronkwo, Elvis A.; Olanipekun, E. O.; Mohallem, Nelcy Della Santina; Guimarães, Walber Gonçalves; Gomes, Beatriz L.F. de M.; Souza, Guilhermina de O.; Duarte, Hélio A.

doi:10.1016/j.enmm.2021.100439

Cited by 30 publications

(9 citation statements)

References 39 publications

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“…In the case of white eggshells, eggshell-derived hydroxyapatite is an efficient adsorbent. Ayodele et al [77] reported a removal percentage of 95.1 % using hydroxyapatite derived from eggshells, their findings were almost similar to De Angelis et al [29].…”

Section: Removal Of Nickelsupporting

confidence: 65%

Methodologies of Removal of Heavy Metals from Contaminated Water Using Various Waste Materials: A Comprehensive Review

Jamkar,

Tripathy,

Mallik

et al. 2023

ChemBioEng Reviews

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The contamination of water with heavy metals like arsenic, cadmium, nickel, zinc, lead, and cobalt presents a pressing and formidable challenge for numerous countries. The surge in industrial activities has exacerbated the pollution of freshwater sources, resulting in an alarming escalation of toxic metal concentrations in lakes, rivers, and underground water reservoirs. Consequently, millions of individuals in developing nations face significant health risks associated with heavy metal exposure. Compounding this issue is the limited accessibility to advanced water treatment methods, intensifying the gravity of the situation. Extensive research efforts have been dedicated to investigating low‐cost adsorbents derived from waste materials. It has been observed that the complete removal of heavy metals can be obtained using waste materials like eggshells, neem leaves, red mud, and black tea waste. The objective is to enhance the efficacy of heavy metal removal from water by employing modified waste materials as effective adsorbents. In this comprehensive review, concise and in‐depth information about the utilization of readily available waste materials is provided, including black tea waste, fruit peels, vegetable peels, sawdust, and other similar resources. This review emphasizes the kinetics and mechanisms involved in removing heavy metals. Additionally, the factors that impact the efficiency and extent of heavy metal removal in different waste materials have also been discussed.

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Section: Removal Of Nickelsupporting

confidence: 65%

Methodologies of Removal of Heavy Metals from Contaminated Water Using Various Waste Materials: A Comprehensive Review

Jamkar,

Tripathy,

Mallik

et al. 2023

ChemBioEng Reviews

View full text Add to dashboard Cite

show abstract

“…The pH value is a critical factor impacting the adsorbent's surface characteristics and the availability of appropriate functional groups on the dye molecules. 48 The adsorbate molecules and adsorbents often contain a variety of surface functional groups that can be protonated/deprotonated in response to the medium pH, so modulating the electrostatic interaction between dyes and adsorbents and thereby increasing the effectiveness of pollutant elimination. The solutions were adjusted by adding HCl and/or NaOH dropwise while monitoring the pH value via a pH meter.…”

Section: Resultsmentioning

confidence: 99%

Enhanced adsorptive removal of indigo carmine dye by bismuth oxide doped MgO based adsorbents from aqueous solution: equilibrium, kinetic and computational studies

et al. 2022

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“…The highly available H + may protonate the electron-rich sites on the pollutants and/or CNPs at low pHs. On the other hand, the − OH availability above a pH of 8.0 may compete with contaminants on the adsorption sites of the sorbent [ 50 ].…”

Section: Resultsmentioning

confidence: 99%

Optimization, Nature, and Mechanism Investigations for the Adsorption of Ciprofloxacin and Malachite Green onto Carbon Nanoparticles Derived from Low-Cost Precursor via a Green Route

et al. 2022

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The spread of organic pollutants in water spoils the environment, and among the best-known sorbents for removing organic compounds are carbonaceous materials. Sunflower seed waste (SFSW) was employed as a green and low-cost precursor to prepare carbon nanoparticles (CNPs) via pyrolysis, followed by a ball-milling process. The CNPs were treated with a nitric–sulfuric acid mixture (1:1) at 100 °C. The scanning electron microscopy (SEM) showed a particle size range of 38 to 45 nm, and the Brunauer–Emmett–Teller (BET) surface area was 162.9 m2 g−1. The elemental analysis was performed using energy-dispersive X-ray spectroscopy, and the functional groups on the CNPs were examined with Fourier transform infrared spectroscopy. Additionally, an X-ray diffractometer was employed to test the phase crystallinity of the prepared CNPs. The fabricated CNPs were used to adsorb ciprofloxacin (CFXN) and malachite green (MLG) from water. The experimentally obtained adsorption capacities for CFXN and MLG were 103.6 and 182.4 mg g−1, respectively. The kinetic investigation implied that the adsorption of both pollutants fitted the pseudo-first-order model, and the intraparticle diffusion step controlled the process. The equilibrium findings for CFXN and MLG sorption on the CNPs followed the Langmuir and the Fredulich isotherm models, respectively. It was concluded that both pollutants spontaneously adsorbed on the CNPs, with physisorption being the likely mechanism. Additionally, the FTIR analysis of the adsorbed CFXN showed the disappearance of some functional groups, suggesting a chemisorption contribution. The CNPs showed an excellent performance in removing CFXN and MLG from groundwater and seawater samples and possessed consistent efficiency during the recycle–reuse study. The application of CNPs to treat synthetically contaminated natural water samples indicated the complete remediation of polluted water using the ball-mill-fabricated CNPs.

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Experimental and theoretical studies of the adsorption of Cu and Ni ions from wastewater by hydroxyapatite derived from eggshells

Cited by 30 publications

References 39 publications

Methodologies of Removal of Heavy Metals from Contaminated Water Using Various Waste Materials: A Comprehensive Review

Methodologies of Removal of Heavy Metals from Contaminated Water Using Various Waste Materials: A Comprehensive Review

Enhanced adsorptive removal of indigo carmine dye by bismuth oxide doped MgO based adsorbents from aqueous solution: equilibrium, kinetic and computational studies

Optimization, Nature, and Mechanism Investigations for the Adsorption of Ciprofloxacin and Malachite Green onto Carbon Nanoparticles Derived from Low-Cost Precursor via a Green Route

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