The sequestral capture of fluoride, nitrate and phosphate by metal-doped and surfactant-modified hybrid clay materials

Omorogie, Martins O.; Agunbiade, Foluso O.; Alfred, Moses O.; Olaniyi, Olaronke T.; Adewumi, Adeniyi T.; Bayode, Ajibola A.; Ofomaja, Augustine E.; Naidoo, Eliazer Bobby; Okoli, Chukwunonso Peter; Adebayo, T. A.; Unuabonah, Emmanuel I.

doi:10.1007/s11696-017-0290-9

Cited by 27 publications

(16 citation statements)

References 30 publications

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“…The value of pH pzc is calculated at the point where the curve intersects the plot: pH zero line (pH versus pH o ). The pH pzc of an adsorbent is a crucial property that determines the pH at which the adsorbent surface is electrically neutral . The acidic or basic functional groups in the solution no longer contribute to the pH of the solution at the pH pzc value …”

Section: Resultsmentioning

confidence: 99%

Biomass-Tuned Reduced Graphene Oxide@Zn/Cu: Benign Materials for the Cleanup of Selected Nonsteroidal Anti-inflammatory Drugs in Water

2023

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The persistent increase in the amount of nonsteroidal anti-inflammatory drugs such as ibuprofen (IBP) and diclofenac (DCF) in water bodies is alarming, thereby calling for a need to be addressed. To address this challenge, a bimetallic (copper and zinc) plantain-based adsorbent (CZPP) and reduced graphene oxide modified form (CZPPrgo) was prepared by facile synthesis for the removal of ibuprofen (IBP) and diclofenac (DCF) in water. Both the CZPP and CZPPrgo were characterized by different techniques such as Fourier transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), scanning electron microscopy (SEM), and pHpzc analysis. FTIR and XRD confirmed the successful synthesis of the CZPP and CZPPrgo. The adsorption of the contaminants was carried out in a batch system, and several operational variables were optimized. The adsorption is affected by the initial concentration of the pollutants (5–30 mg·L–1), the adsorbent dose (0.05–0.20 g), and pH (2.0–12.0). The CZPPrgo has the best performance with maximum adsorption capacities of 148 and 146 mg·g–1 for removing IBP and DCF from water, respectively. The experimental data were fitted into different kinetic and isotherm models; the removal of IBP and DCF follows the pseudo-second order, which can be best explained by the Freundlich isotherm model. The reuse efficiency was above 80% even after four adsorption cycles. This shows that the CZPPrgo is a promising adsorbent for removing IBP and DCF in water.

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Section: Resultsmentioning

confidence: 99%

Biomass-Tuned Reduced Graphene Oxide@Zn/Cu: Benign Materials for the Cleanup of Selected Nonsteroidal Anti-inflammatory Drugs in Water

2023

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“…The pH at point of zero charge (pHpzc) was determined by using the salt addition method as described by ref. 20 .…”

Section: Methodsmentioning

confidence: 99%

Green synthesis of ZnO coated hybrid biochar for the synchronous removal of ciprofloxacin and tetracycline in wastewater

et al. 2021

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“…Finally, Omorogie et al [125] described papaya seed/clay hybrids for the removal of nitrate. This work is based on earlier work [126] establishing that papaya/clay hybrids are effective for heavy metal removal but the more recent publication [125] demonstrates that these composites are in fact useful and effective for removal of a wide range of pollutants including anions.…”

Section: Compositesmentioning

confidence: 99%

Monitoring and Management of Anions in Polluted Aqua Systems: Case Studies on Nitrate, Chromate, Pertechnetate and Diclofenac

Ahmed

Moisy

Banerji

et al. 2021

Environmental Contamination Remediation and Management

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The sequestral capture of fluoride, nitrate and phosphate by metal-doped and surfactant-modified hybrid clay materials

Cited by 27 publications

References 30 publications

Biomass-Tuned Reduced Graphene Oxide@Zn/Cu: Benign Materials for the Cleanup of Selected Nonsteroidal Anti-inflammatory Drugs in Water

Biomass-Tuned Reduced Graphene Oxide@Zn/Cu: Benign Materials for the Cleanup of Selected Nonsteroidal Anti-inflammatory Drugs in Water

Green synthesis of ZnO coated hybrid biochar for the synchronous removal of ciprofloxacin and tetracycline in wastewater

Monitoring and Management of Anions in Polluted Aqua Systems: Case Studies on Nitrate, Chromate, Pertechnetate and Diclofenac

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