Modified magnetic graphene oxide as an efficient adsorbent for preconcentration of tartrazine

Taban, Raziyeh; Elhami, Shahla

doi:10.1080/1536383x.2021.1940152

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…Extensive study has been done using adsorbents of both inorganic and organic origin for the sequestration of dyes. Amongst these adsorbents include; cellulose 21 , biogas waste 22 , 23 , montmorillonite 24 , waste peel 25 , aerogels 26 , 27 , nanocomposite 28 , 29 , Zn/Al-LDH 30 , banana pith 31 , coconut mesocarp 32 , peat 33 graphene oxide 34 , chitin 35 , iron oxide nanoparticles 36 , chitosan 37 , silica 38 , jute stick powder 39 , peanut hull 40 , polypyrrole/SrFe 12 O 19 /graphene 41 , jute processing wastes 42 , activated carbon 43 – 45 , soy meal hull 46 , quartz waste 47 , rice husks 48 , maize stalks 49 Fe/zeolite 50 , hazelnut shells 51 , seeds 52 , husk 53 , Scots pine 54 , kaolinite clay 55 and leaves 56 . However, some of the adsorbents previously mentioned were found to have some degree of demerit such as poor filtering, ineffective at high temperatures, expensive to regenerate and limited selectivity.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamics, kinetics and isothermal studies of tartrazine adsorption onto microcline/MWCNTs nanocomposite and the regeneration potentials

Amaku

Taziwa

2023

Sci Rep

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The quest for a cheap, effective, and eco-friendly wastewater treatment technique that is free of secondary toxic byproducts, calls for the fabrication of a nature-friendly adsorbent with a robust capacity to decontaminate polluted water sources and be recycled. To this end, we report the fabrication of novel nanocomposite (KMCM) from microcline (KMC) and multiwall carbon nanotubes (MWCNTs). The adsorbents (KMC and KMCM) were characterized using XRD, BET, SEM, TGA and FTIR. The novel and low-cost nano sorbent were designed for the elimination of tartrazine (Tatz) from wastewater. The adsorption of Tatz onto KMC and KMCM was influenced by adsorbent dose, initial Tatz concentration, contact time and solution pH. Experimental data acquired from the equilibrium studies were well addressed by the Langmuir isotherm model. The maximum uptake capacity of 37.96 mg g−1 and 67.17 mg g−1 were estimated for KMC and KMCM. The kinetics for the adsorption of Tatz onto KMC and KMCM was best expressed by pseudo-second-order and Elovich models. The thermodynamic parameters revealed that the uptake of Tatz onto KMC and KMCM was an endothermic (ΔH: KMC = 35.0 kJ mol−1 and KMCM = 42.91 kJ mol−1), entropy-driven (ΔS: KMC = 177.6 J K−1 mol−1 and KMCM = 214.2 J K−1 mol−1) and spontaneous process. Meanwhile, KMCM demonstrated good reusability potential and superior adsorption efficiency when compared to other adsorbents.

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Section: Introductionmentioning

confidence: 99%

Thermodynamics, kinetics and isothermal studies of tartrazine adsorption onto microcline/MWCNTs nanocomposite and the regeneration potentials

Amaku

Taziwa

2023

Sci Rep

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Aqueous Phase Removal of Tartrazine

Amaku,

Oyedotun,

Maxakato

et al. 2024

Chemistry Africa

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In this study, published articles on the adsorptive removal of tartrazine from the aqueous phase were reviewed. Adsorbents sustaining both intercalating and photodegradation characteristics were also assessed. Besides collating available information on adsorbents employed for tartrazine removal, experimental conditions (solution temperature, pH, dosage, initial concentration, and agitation period) relating to the adsorptive removal of tartrazine were discussed. Deduction from kinetic, isotherms and thermodynamics data acquired from different adsorbents were assessed. Granular activated carbon and chitosan adsorbents had the least and highest tartrazine removal capacity. Lower solution pH majorly favoured the adsorption of tartrazine. On the other hand, increased dosage, contact time, initial concentration, and solution temperature generally enhanced the adsorptive uptake of tartrazine. Pseudo-second-order kinetics model was observed to typically describe the kinetic data. Freundlich and Langmuir isotherm models were popularly observed to best describe the tartrazine adsorption equilibrium. The uptake of tartrazine was generally spontaneous with the exception of a few nanocomposites. Meanwhile, π-π stacking, hydrogen bonding, Van der Waals forces and electrostatic interactions were proposed as possible mechanisms for the adsorption of tartrazine from wastewater. Adsorbents demonstrated good regeneration tendency with NaOH. Hence, it was concluded that the batch adsorption technique is economically viable and should be scaled up for industrial applications. Meanwhile, future work on tartrazine adsorption should employ real wastewater samples, regenerate adsorbents for reuse, design and execute a pilot scale assessment, employ column adsorption technique and formulate policy to regulate effluent discharge.

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Modified magnetic graphene oxide as an efficient adsorbent for preconcentration of tartrazine

Cited by 2 publications

References 26 publications

Thermodynamics, kinetics and isothermal studies of tartrazine adsorption onto microcline/MWCNTs nanocomposite and the regeneration potentials

Thermodynamics, kinetics and isothermal studies of tartrazine adsorption onto microcline/MWCNTs nanocomposite and the regeneration potentials

Aqueous Phase Removal of Tartrazine

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