Study of Methylene Blue Adsorption by Modified Kaolinite by Dimethyl Sulfoxide

Lellou, Salima; Kadi, Samir; Guemou, Laid; Schott, Jacques; Benhebal, Hadj

doi:10.2478/eces-2020-0015

Cited by 6 publications

(2 citation statements)

References 37 publications

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“…Figure 2 shows that as the contact time progressed, the adsorption weight of dye over zeolite intensified, this could be due to the insufficiency in the internal diffusion resistance and an adequate access to the exchange sites. After about 60 min, the adsorption intensity becomes gradually unchanged, giving an evidence that empty surface places for exchange could not be noticed [16]. Approaching the period of stability, in conjunction with a notable removal implied that the large affinity of the amended adsorbent to the reactive dyes [14].…”

Section: Resultsmentioning

confidence: 99%

Adsorption Performance of Dyes Over Zeolite for Textile Wastewater Treatment

Hammood

Chyad

Al-Saedi

2021

Ecological Chemistry and Engineering S

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Removal of textile dyes from wastewater have recently attracted much attention, due to the toxicity, difficult visibility, and thereby the negative consequences on the aqueous environment. Therefore, there have been diverse promising new techniques such as adsorption for dyes removal from industrial wastewater. Compared to the highly cost treatment techniques, removal of dyes using the adsorption process is relatively simple and requires less cost. Synthetic zeolite was used in this research as a high capacity nano-adsorbent for the removal of reactive dyes from coloured wastewater. The impact of main parameters: dose of adsorbent (0.0025 to 0.02 g), pollutant concentration (25 to 200 mg/L), contact time (10 to 120 minutes), degree of agitation (25 and 300 rpm), and solution pH (2 to 8) on adsorption performance of the synthesised zeolite was investigated. The optimum values of these parameters to remove dyes efficiently at 90 % removal were 0.02 g, 200 mg/L, 80 min, 300 rpm, and 6-7 respectively. Also, two models were evaluated, the Langmuir and Freundlich isotherms. Langmuir isotherm was more efficient for representing the data than the Freundlich. The results of the Langmuir isotherm gave KL = 0.08 L/mg, qm = 6.02 mg/g, and R 2 = 0.98, which fitted to the adsorption data of zeolite. Reactive dye adsorption by synthetic zeolite is a vital tool in identifying the fate of dye removal from industrial wastewater treatment plants.

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Section: Resultsmentioning

confidence: 99%

Adsorption Performance of Dyes Over Zeolite for Textile Wastewater Treatment

Hammood

Chyad

Al-Saedi

2021

Ecological Chemistry and Engineering S

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“…Furthermore, the annealing approach to produce magnetic iron nanoparticles was investigated, and the ability of the as-synthesised nanoiron and nanoiron+Au particles towards methylene blue (MB) degradation was evaluated. Here, MB dye was selected as a model dye as it is widely used in textile dyeing and is very much toxic and carcinogenic upon release into the nearby aquatic environment [10,17,26].…”

Section: Introductionmentioning

confidence: 99%

Aegle marmelos Leaf Extract Based Synthesis of Nanoiron and Nanoiron+Au Particles for Degradation of Methylene Blue

Korumilli

Rao

Černík

et al. 2022

Ecological Chemistry and Engineering S

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In this study, nanoiron and nanoiron+Au particles were synthesised using aqueous Aegle marmelos extract using a facile and one-pot approach. Lower size non-magnetic nanoiron (~34 nm) and nanoiron (~34 nm) +Au particles (1 to 1.5 µm) were produced from the same medium individually. Nanoparticles suspension behaviour and structural characterisations were carried out by UV-Vis spectroscopy, electron microscopy and by X-ray diffraction techniques. Primarily, for synthesis, a simple bioreduction approach generated amorphous nanoiron particles, which on annealing produced magnetic maghemite, γ-Fe2O3 type nanoparticles with sizes 100 to 1000 nm. Posteriorly, the bioreduction process also produces nanoiron+Au particles and can be used for multifunctional applications. As a model application, catalytic application of the as-prepared nanoiron and nanoiron+Au particles towards methylene blue, a thiazine dye degradation is investigated and found to be effective within 20 min. Langmuir-Hinshelwood kinetic model was exploited to know the degradation behaviour, and the model was found to be fit based on R 2 values with the observed experimental data. We suggest that the formed highly stable nanoiron particles with in situ stabilisation offer benefits like consistency, environmental friendliness and suits well for large-scale applicability.

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