Zinc-Aluminum layered double hydroxide: High efficient removal by adsorption of tartrazine dye from aqueous solution

Ouassif, Hasna; Moujahid, El Mostafa; Lahkale, R.; Sadik, R.; Bouragba, Fatima Zahra; Sabbar, Elmouloudi; Diouri, M.

doi:10.1016/j.surfin.2019.100401

Cited by 52 publications

(15 citation statements)

References 62 publications

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“…These adsorption capacity values are similar compared with other layered compounds as adsorbents of dye. [22,26] Considering that these reported studies attained the better isotherm fit for Langmuir's model, we can consider that the adsorption process obtained by the current study for adsorption of SY and OG has different process adsorption with diverse experimental conditions. In the case of adsorption systems of this current study is the possibility observe solute molecules denominated monofunctional with moderate intermolecular attraction, i. e., a solute molecule with a large hydrophobic part and a marked attraction force of the substrate, compete strongly to reach substrate locations, usually solvent molecules.…”

Section: Isothermal Adsorption Studymentioning

confidence: 76%

Study of Different Morphology of Zinc Hydroxide Salt as Adsorbent of Azo Dyes

et al. 2021

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In this study, zinc layered hydroxide salts (Zn-LHS) intercalated with dodecyl sulfate (DDS) anion in nanocone morphology (LHS-NC) and conventional stone-like co-precipitation LHS phases (LHS-CO) were investigated as adsorbent of Orange G (OG) and Sunset Yellow (SY) dye. LHS-NC was prepared by urea hydrolysis method, while LHS-DDS was prepared by coprecipitation method. XRDP, FTIR, and SEM were used to characterize their structure and showed the formation of layered compounds with very well layered stacking with nanocone and conventional layer stone morphology. After OG and SY adsorption, the results (XRDP, FTIR, UV-Vis, Zetametry) showed that the Freundlich adsorption isotherms had been well fitted, and both OG and SY dyes were intercalated in interlayer space of LHS, where LHS-CO and LHS-NC present high uptake capability of SY dye remotion equal a 227.79 and 442.48 (mg g À 1 ) while OG adsorption capability were 2.52 and 6.39 (mg g À 1 ), respectively. For the kinetics study, the best fit was obtained by the pseudo-second-order model, whereas the results of intraparticle diffusion show a one-step adsorption process. Hence, this study demonstrated Zn-LHS in nanocone morphology, and conventional stone-like co-precipitation phase makes them potentially attractive adsorbents in water purification.

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Section: Isothermal Adsorption Studymentioning

confidence: 76%

Study of Different Morphology of Zinc Hydroxide Salt as Adsorbent of Azo Dyes

et al. 2021

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“…It showed that the PNP removal percentage increased from 29.7% to 80.4% as the adsorbent dosage was increased from 0.05 g to 0.30 g. This is due to the fact that there was a greater number of empty sites for solute entrapment as the adsorbent dosage increased. 57,58 In addition, the highest removal was achieved at 76.4% with the adsorbent mass of 0.20 g. The increment of adsorbent dosage resulted in minor effects to the PNP removal. This is due to the overlapping of the adsorbent as a result of suspended excess adsorbent particles and hence fewer available active sites.…”

Section: Adsorption Isotherms Equations Parametersmentioning

confidence: 91%

Insights into thep-nitrophenol adsorption by amidoxime-modified poly(acrylonitrile-co-acrylic acid): characterization, kinetics, isotherm, thermodynamic, regeneration and mechanism study

et al. 2021

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“…After the removal of CR and tartrazine, the enlargement and shift of specific bands was evidenced in both bioadsorbents. Using MCC, pronounced peaks are observed at 2357 and 1035 cm −1 , attributed to the fixation of the dye at these sites on the surface of the bioadsorbents [46]. Similarly, the bands at 3432 and 1631 cm −1 decrease in amplitude and move slightly when CR is adsorbed, indicating a deep involvement of the amino species.…”

Section: Ftir Spectroscopy Analysismentioning

confidence: 96%

Adsorption of Azo-Anionic Dyes in a Solution Using Modified Coconut (Cocos nucifera) Mesocarp: Kinetic and Equilibrium Study

Tovar

Villabona-Ortíz

González-Delgado

2021

Water

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The effect of adsorbent dose and initial concentration on removing the azo-anionic dyes Congo Red andtartrazine present in a synthetic aqueous solution was studied using natural cellulose (CC) and modified cationic cellulose (MCC) from coconut mesocarp. Three levels of adsorbent dosage (5, 8 and 12 mg/L) and initial concentration (40, 70 and 100 mg/L) were used. Cetyl trimethyl ammonium chloride (CTAC) was used as a modifying agent. TGA and DSC showed that the extracted cellulose was of good quality, composed mostly of cellulose with lignin and hemicellulose traces, and 8% moisture. The FTIR spectrum showed the effectiveness of the modification in the structure of the material with symmetric deformation of the C6H6-Cl group in 1472 cm−1 present in the CTAC. It was found that decreasing the adsorbent dosage and increasing the initial concentration favored the dyes’ adsorption capacity on the two bioadsorbents. Tartrazine removals of 5.67 mg/g on CC and 19.61 mg/g on MCC were achieved, and for CR of 15.52 mg/g on CC and 19.99 with MCC with removal percentages over 97% with the quaternized biomass in all cases. The kinetic and equilibrium study was carried out to identify the mechanisms involved in the adsorption process. The Freundlich model can describe the equilibrium isotherm data of tartrazine on CC and MCC. In contrast, those of CR is defined by the Langmuir and Dubinin–Radushkevic models for CC and MCC, respectively Adsorption kinetics showed that equilibrium was reached at 30 min, with rapid adsorption in the initial minutes with the removal of about 97% of the contaminant in the first 5 min; fitting to kinetic models showed that the kinetics of tartrazine on CC was fitted by Elovich (R2 = 0.756), and on MCC the Elovich (R2 = 0.887) and pseudo-second-order (R2 = 0.999) models. Removing CR on CC was fitted by pseudo-first-order, pseudo-second-order and Elovich models (R2 > 0.98), and when using MCC, all models show a good fitting with R2 = 0.99 in all cases.

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Zinc-Aluminum layered double hydroxide: High efficient removal by adsorption of tartrazine dye from aqueous solution

Cited by 52 publications

References 62 publications

Study of Different Morphology of Zinc Hydroxide Salt as Adsorbent of Azo Dyes

Study of Different Morphology of Zinc Hydroxide Salt as Adsorbent of Azo Dyes

Insights into thep-nitrophenol adsorption by amidoxime-modified poly(acrylonitrile-co-acrylic acid): characterization, kinetics, isotherm, thermodynamic, regeneration and mechanism study

Adsorption of Azo-Anionic Dyes in a Solution Using Modified Coconut (Cocos nucifera) Mesocarp: Kinetic and Equilibrium Study

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