Removal of bifenthrin pesticide from aqueous solutions by treated patellidae shells using a new fixed bed column filtration technique

Bakka, Abdelhamid; Mamouni, Rachid; Saffaj, Nabil; Laknifli, Abdellatif; Aziz, Khalid; Roudani, Aziza

doi:10.1016/j.psep.2020.06.030

Cited by 19 publications

(6 citation statements)

References 46 publications

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“…From the removal percentage, it can be seen that a higher bed height or a greater amount of adsorbent in the column results in a longer bed life, and the system reaches equilibrium fast. This can be explained by the fact that a higher bed height provides more active sites for solute binding and more interaction time, reducing competition between adsorbate molecules and increasing percentage adsorption. , …”

Section: Resultsmentioning

confidence: 99%

“…Figure 5b presents the curve illustrating the effect of various flow rates on OG dye removal. 43,44 The results demonstrated that a decrease in the flow rate led to an increase in the percentage of OG dye removal and the time taken to reach saturation. At a lower flow rate, the OG dye had more time to contact the Bio-Hap/Cs beads' sorption site, resulting in a higher removal of OG molecules in the column system.…”

Section: Fixed Bed Column Adsorption 331 Effect Of Bed Heightmentioning

confidence: 91%

“…This can be explained by the fact that a higher bed height provides more active sites for solute binding and more interaction time, reducing competition between adsorbate molecules and increasing percentage adsorption. 42,43 3.3.2. Effect of Flow Rate.…”

Section: Fixed Bed Column Adsorption 331 Effect Of Bed Heightmentioning

confidence: 99%

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Flexible Synthesis of Bio-Hydroxyapatite/Chitosan Hydrogel Beads for Highly Efficient Orange G Dye Removal: Batch and Recirculating Fixed-Bed Column Study

Kjidaa,

Mchich,

Aziz

et al. 2024

ACS Omega

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The use of fish waste as a source material for the development of functional beads has significant potential applications in the fields of materials science and environmental sustainability. In this study, a biomaterial bead of chitosan was cross-linked with bio-hydroxyapatite (Bio-Hap/Cs) through the encapsulation process to create a stable and durable material. The beads are characterized using scanning electron microscopy combined with energy dispersive X-ray spectrometry, Fourier transform infrared spectroscopy, and X-ray diffraction techniques. The adsorption efficiency of Bio-Hap/Cs hydrogel beads was evaluated by using Orange G (OG) dye in both batch and recirculating column systems, and the effect of various parameters on the adsorption capacity was investigated. In the batch study, it was found that OG removal increased with an increasing pH and adsorbent dose. However, in the recirculating column system, a higher bed height and lower flow rate led to increased removal of the OG dye. The kinetic study indicated that the pseudo-secondorder model provided a good description of OG adsorption onto Bio-Hap/Cs beads in both batch and recirculating processes, with a high coefficient correlation. The maximum adsorbed amounts are found to be 19.944 mg g −1 and 9.472 mg g −1 in batch and recirculating processes, respectively. Therefore, Bio-Hap/Cs hydrogel beads have demonstrated an effective and reusable material for OG dye remediation from aqueous solutions using recirculating adsorption processes.

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Section: Resultsmentioning

confidence: 99%

Section: Fixed Bed Column Adsorption 331 Effect Of Bed Heightmentioning

confidence: 91%

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Flexible Synthesis of Bio-Hydroxyapatite/Chitosan Hydrogel Beads for Highly Efficient Orange G Dye Removal: Batch and Recirculating Fixed-Bed Column Study

Kjidaa,

Mchich,

Aziz

et al. 2024

ACS Omega

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“…Several authors [55,[59][60][61][62][63] have reviewed the existing literature on the dynamic adsorption of different contaminants using fixed beds. It is important to demonstrate that the parameters of the BA, TH, and YN models can be related to each other.…”

Section: Optimal Conditions Referencementioning

confidence: 99%

“…Several papers have used the logistic model, showing an adequate fit for the breakthrough curve. [61,62,64,65]…”

Section: Logistic Modelmentioning

confidence: 99%

Experimental study and modelling of an azo colourant dynamic adsorption onto functional cross‐linked chitosan/ceramic particles in a fixed bed column

2023

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The use of azo dyes in industrial activities generates a large volume of contaminated wastewater; these pollutants in water bodies affect aquatic biota and human health. A functional biocomposite sorbent material was synthesized using cross‐linked chitosan with oxalic acid that forms a coating on alumina ceramic particles (AOCh). The removal of Reactive Red 195, a reactive azo dye, using a fixed‐bed adsorption column filled with this material was tested. AOCh was physico‐chemically characterized by Fourier transform infrared spectroscopy–total attenuated reflection (FTIR‐ATR), scanning electron microscopy–energy dispersion spectrometry X‐ray (SEM‐EDS), X‐ray diffraction (XDR), thermo‐gravimetric analysis (TGA), and Z‐potential. The dynamic adsorption performance was analyzed from experimental breakthrough curves obtained in fixed‐bed columns by modifying different operating conditions (bed depth, volumetric flow rate, and dye inlet concentration). Equilibrium adsorption isotherms were determined under dynamic conditions and compared with batch results. The maximum adsorption capacity of the dynamic equilibrium isotherm obtained from the continuous assays was 331 mg/g; this value was the highest in comparison to other tested materials reported in the literature. Different dynamic adsorption models were applied to fit experimental data, including Thomas, Bohart–Admas, Yoon–Nelson, logistic general model, bed depth surface time (BDST), and modified dose response (Yan) models. A critical analysis of these equations was presented, showing the equivalences and the relationship among the coefficients. The Yan model achieved the highest level of agreement between the experimental and predicted values of the breakthrough curves. The use of this model enables scaling‐up the industrial process for dye removal. The present work proposed a novel biosorbent material and contributes to the analysis of industrial dye removal under dynamic conditions.

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Green Synthesis of a Biomaterial Composite Based on Fish Scales for Anionic Dye Removal: Characterization and Optimization by RSM@BBD Approach

Kjidaa,

Mamouni,

Aziz

et al. 2023

Water Air Soil Pollut

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Removal of bifenthrin pesticide from aqueous solutions by treated patellidae shells using a new fixed bed column filtration technique

Cited by 19 publications

References 46 publications

Flexible Synthesis of Bio-Hydroxyapatite/Chitosan Hydrogel Beads for Highly Efficient Orange G Dye Removal: Batch and Recirculating Fixed-Bed Column Study

Flexible Synthesis of Bio-Hydroxyapatite/Chitosan Hydrogel Beads for Highly Efficient Orange G Dye Removal: Batch and Recirculating Fixed-Bed Column Study

Experimental study and modelling of an azo colourant dynamic adsorption onto functional cross‐linked chitosan/ceramic particles in a fixed bed column

Green Synthesis of a Biomaterial Composite Based on Fish Scales for Anionic Dye Removal: Characterization and Optimization by RSM@BBD Approach

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