Clean technology for synchronous sequestration of charged organic micro-pollutant onto microwave-assisted hybrid clay materials

Bayode, Ajibola A.; Agunbiade, Foluso O.; Omorogie, Martins O.; Moodley, Roshila; Bodede, Olusola; Unuabonah, Emmanuel I.

doi:10.1007/s11356-019-07563-z

Cited by 18 publications

(33 citation statements)

References 52 publications

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“…Increasing the adsorbent dose has different conflicting effects on the adsorption system. The increase in the adsorbent dose leads to a rise in the number of available active sites to enhance the adsorption activity and increase the removal rate . Generally, the decline in IBP and DCF removal with increasing dosage of CZPPrgo may be ascribed to the agglomeration of the nanoparticles, which leads to a smaller surface area, thereby lowering the adsorption process due to a poor adsorbent–adsorbate interaction …”

Section: Resultsmentioning

confidence: 99%

“…The experimental data obtained were fit into some nonlinear equilibrium models, which are Freundlich (eq ), Fritz–Schlunder (eq ), and Elovich (eq ), and nonlinear kinetic models, which are pseudo-second-order model (PSOM) (eq ), fractal-like pseudo-second-order model (FL-PSOM) (eq ), two-step kinetic model (eq ), fractal-like kinetic model (FKN) (eq ), and Morris–Weber intraparticle diffusion (IPD) model (eq ). , The experimental data were fit into the nonlinear mathematical equations below using the quasi-Newton least-squares algorithm in KyPlot Software 2.0 Model (Kyens Lab Inc., Tokyo, Japan). q normale = K normalF C normale 1 / n q normale = q max FS C normale n FS 1 + K FS C normale γ FS q normale = C normale ( K e q m − e ( q e…”

Section: Characterization Of the Adsorbentsmentioning

confidence: 99%

“…The major shortcomings of these techniques are the high cost and production of by-products, which may be more toxic. According to a lucid analysis of all of these techniques, carbon-based adsorption generally has proven to be one of the most promising approaches for removing these contaminants from water because it is easy, cost-effective, and has zero production of toxic by-products. − …”

Section: Introductionmentioning

confidence: 99%

“…The data reported in these works have shown biomasses to be promising for the removal of contaminants. The use of cost-efficient agro-waste materials such as the listed ones reduces the high cost of adsorbent synthesis . Several means have been devised to modify the adsorbents for optimum performance; one of the widely used ones is the modification with metal oxides like iron FeO, , CuO, ZnO, , Al 2 O 3 , MgO, , MnO 2 , TiO 2 , etc., which improves the morphology and particle size, biocompatibility, and stability.…”

Section: Introductionmentioning

confidence: 99%

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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%

Section: Characterization Of the Adsorbentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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“…Infrared spectra have been widely used by many scholars to characterize the change of surface functional groups on an adsorbent surface. , Thus, chemical interactions between water and mudstone can be studied by observing the changes in infrared spectra during heating of mudstones after water adsorption. However, the chemical interaction is hard to distinguish because of the overlap of infrared vibration bands of O–H in H 2 O and that in clay minerals .…”

Section: Introductionmentioning

confidence: 99%

Effect of the Physicochemical Structure of Mudstone on Readsorption Behavior of Water

et al. 2020

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Mudstone can store formation water when acting as a caprock, which is a part of water sources in early oil exploitation. To improve crude oil quality, it is necessary to understand readsorption behavior of water. The behavior of water is closely related to the physicochemical structure of mudstone. Interactions between water and chemical structures are hard to detect because of the overlap of O−H infrared vibration bands (IR) in H 2 O and that in mudstone, thus D 2 O was innovatively used to interact with mudstone. In this study, mineral compositions and pore structures of mudstone were identified by X-ray diffraction, Xray fluorescence, and low-temperature N 2 adsorption/desorption, respectively. Furthermore, water retention contents at different relative humidities (RH) were investigated by comparing hysteresis loop areas at low (S 1 ) and high (S 2 ) RH based on water adsorption/desorption isotherms. Interactions between water and mudstone were investigated by studying the IR spectra changes and release of D, HD, OD, and HOD during drying of mudstones containing adsorbed D 2 O using in situ diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy and thermogravimetric coupled with mass spectrometry (TG-MS), respectively. The results showed that the specific surface area (S BET ) and mineral compositions controlled S 1 , while S 2 was related to capillary pore volume. The detection of OD and HOD by in situ DRIFT at 300 °C and by TG-MS at 450 °C manifested that hydrogen bonds were formed between water and mudstone. Based on this study, we suggested that production wells should be constructed as far as possible on top of mudstone caprocks with relatively lower pore volumes and higher kaolinite contents to improve crude oil quality in early exploitation.

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One‐Pot Synthesis of ZnO‐Activated Eggshell@kaolinite: Sorbents for Phosphate Capture in Water

Bayode,

Badamasi,

Olusola

et al. 2023

Chem Eng & Technol

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The availability of colossal amounts of phosphate in water bodies has led to serious environmental challenges all over the world. In this study, a new adsorbent was synthesized using treated kaolinite clay, pulverized eggshells, and ZnCl2. Surface characterizationof these adsorbents showed the availability of functional moieties, morphological variations, pore sizes, particle sizes, etc. Adsorption of phosphate occurs via multiple mechanisms, comprising ligand exchange, complexation, hydrogen bonding, and electrostatic interaction, among others. The effect of pH, showed that maximum adsorption of 93.3 % was achieved at pH 3.0. It was also shown that these cost‐effective adsorbents could be regenerated in six cycles, hence increasing their applicability.

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Clean technology for synchronous sequestration of charged organic micro-pollutant onto microwave-assisted hybrid clay materials

Cited by 18 publications

References 52 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

Effect of the Physicochemical Structure of Mudstone on Readsorption Behavior of Water

One‐Pot Synthesis of ZnO‐Activated Eggshell@kaolinite: Sorbents for Phosphate Capture in Water

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