Adsorption of azo dyes by a novel bio-nanocomposite based on whey protein nanofibrils and nano-clay: Equilibrium isotherm and kinetic modeling

Aqdam, Shabboo Rahimi; Otzen, Daniel E.; Mahmoodi, Niyaz Mohammad; Morshedi, Dina

doi:10.1016/j.jcis.2021.05.174

Cited by 114 publications

(30 citation statements)

References 83 publications

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“…The TFC-0.5 membrane with CF could absorb anionic dyes through the positively charged side chains of proteins (e.g., Lys, Arg, and protonated His). 57 The absorbed organic dye molecules on the membrane surface tend to enhance the negative charge density and decrease the pore size, which finally contributes to strengthening the steric-hindrance effect. 58 Figure 8c summarizes the salt retention (i.e., NaCl, and Na 2 SO 4 ) and permeation of the skin-simulated TFC membranes.…”

Section: Resultsmentioning

confidence: 99%

“…The consumed available adsorption sites finally weakened the adsorption of positive-charged dyes because of the formation of the electrical double layer. 57 Meanwhile, the shrunk pore size cannot reject the dyes through the size-sieving effect. Similarly, the rejection against the neural charged dye is limited as the adsorption capacity of CF toward neutral-charged dyes is much weaker.…”

Section: Resultsmentioning

confidence: 99%

“…The TFC-0.5 membrane with an effective area of 12.56 cm 2 absorbed 6.30, 1.52, and 6.56 mg of CR, RB19, and CB-G250 after 100 min operation, respectively. The TFC-0.5 membrane with CF could absorb anionic dyes through the positively charged side chains of proteins (e.g., Lys, Arg, and protonated His) . The absorbed organic dye molecules on the membrane surface tend to enhance the negative charge density and decrease the pore size, which finally contributes to strengthening the steric-hindrance effect …”

Section: Results and Discussionmentioning

confidence: 99%

“…The positive-charged dye could absorb on the surface of the negatively charged TFC-0.5 membrane by electrostatic interactions. The consumed available adsorption sites finally weakened the adsorption of positive-charged dyes because of the formation of the electrical double layer . Meanwhile, the shrunk pore size cannot reject the dyes through the size-sieving effect.…”

Section: Results and Discussionmentioning

confidence: 99%

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Collagen Fibril-Assembled Skin-Simulated Membrane for Continuous Molecular Separation

Xiao

et al. 2022

ACS Appl. Mater. Interfaces

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A skin-simulated thin-film-composite membrane was fabricated using a vacuum-assisted interfacial polymerization method. A negatively charged surface-selective layer on a polyacrylonitrile (PAN) substrate was cross-linked using trimesoyl chloride to form polyamide and polyester with a three-layer structure that was similar to skin. The loading of collagen fibrils assembled on the membrane surface was varied, and a selective layer was obtained, of which the thickness, morphology, and hydrophilicity can be manipulated. The optimal membrane decorated with 0.5 mg of collagen fibril had a selective layer thickness of around 130 nm with pure water permeability up to 84.7 LMH bar–1. Furthermore, the membrane exhibited impressive rejections toward dyes (Congo red with a molecular weight of 696.68 Da: 99.6%, reactive blue 19 with a molecular weight of 626.54 Da: 99.8%, and Coomassie blueG-250 with a molecular weight of 854.02 Da: 98.6%) while high permeations of Na2SO4 and NaCl were achieved. This facile strategy provides a useful guideline for constructing bionic membranes through biomaterials.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

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Collagen Fibril-Assembled Skin-Simulated Membrane for Continuous Molecular Separation

Xiao

et al. 2022

ACS Appl. Mater. Interfaces

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“…where Q t is the quantity adsorbed at time t, Q e for the equilibrium amount, t for time (min), and k 1 is the rate constant [140].…”

Section: Pseudo First-order Kineticsmentioning

confidence: 99%

Sequestration of Contaminants from Wastewater: A Review of Adsorption Processes

Divyashree

Lavanya

2023

ChemBioEng Reviews

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Adsorption has widespread applications in separation processes, particularly aiming at environmental decontamination owing to its economic and highly efficient outcomes. This literature studies various isotherm models concerning adsorption which is accompanied by information related to the mechanism of the adsorption process, which is a crucial aspect of the system design. Many modification techniques bring about a significant enhancement in the working capacity. The build‐up of industrial activities causes a spike in the dispersion of toxic compounds along with non‐biodegradable contaminants from industrial wastewater. The separation techniques have emerged with greater efficiency in eliminating specific pollutants in terms of discharge legislation. Such methods have been reviewed hereby in this document based on literature published lately. Concerning the process of adsorption, this review elucidates the adsorption isotherms, kinetic models, breakthrough curve modelling, thermodynamic concepts, and the regeneration of the support required in batch or continuous reactors.

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Leveraging Direct Pyrolysis for the Synthesis of 10 nm Monodispersed Fe₃O₄/Fe₃C NPS@Carbon to Improve SupercapacitANCE in Acidic Electrolyte

Appiah‐Ntiamoah,

Kim

2024

ChemSusChem

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The prevailing practice advocates pre‐oxidation of electrospun Fe‐salt/polymer nanofibers (Fe‐salt/polymer Nf) before pyrolysis as advantageous in the production of high‐performance FeOx@carbon nanofibers supercapacitors (FeOx@C). However, our study systematically challenges this notion by demonstrating that pre‐oxidation facilitates the formation of polydispersed and large FeOx nanoparticles (FeOx@CI‐DA) through "external" Fe3+ Kirkendall diffusion from carbon, resulting in subpar electrochemical properties. To address this, direct pyrolysis of Fe‐salt/polymer Nf is proposed, promoting "internal" Fe3+ Kirkendall diffusion within carbon and providing substantial physical confinement, leading to the formation of monodispersed and small FeOx nanoparticles (FeOx@CDA). In 1 M H2SO4, FeOx@CDA demonstrates ~2.60x and 1.26x faster SO42‐ diffusivity, and electron transfer kinetics, respectively, compared to FeOx@CI‐DA, with a correspondingly ~1.50x greater effective surface area. Consequently, FeOx@CDA exhibits a specific capacity of 161.92 mAhg‐1, ~2x higher than FeOx@CI‐DA, with a rate capability ~19% greater. Moreover, FeOx@CDA retains 94% of its capacitance after 5000 GCD cycles, delivering an energy density of 26.68 Whkg‐1 in a FeOx@CDA//FeOx@CDA device, rivaling state‐of‐the‐art FeOx/carbon electrodes in less Fe‐corrosive electrolytes. However, it is worth noting that the effectiveness of direct pyrolysis is contingent upon hydrated Fe‐salt. These findings reveal a straightforward approach to enhancing the supercapacitance of FeOx@C materials.

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Adsorption of azo dyes by a novel bio-nanocomposite based on whey protein nanofibrils and nano-clay: Equilibrium isotherm and kinetic modeling

Cited by 114 publications

References 83 publications

Collagen Fibril-Assembled Skin-Simulated Membrane for Continuous Molecular Separation

Collagen Fibril-Assembled Skin-Simulated Membrane for Continuous Molecular Separation

Sequestration of Contaminants from Wastewater: A Review of Adsorption Processes

Leveraging Direct Pyrolysis for the Synthesis of 10 nm Monodispersed Fe₃O₄/Fe₃C NPS@Carbon to Improve SupercapacitANCE in Acidic Electrolyte

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Adsorption of azo dyes by a novel bio-nanocomposite based on whey protein nanofibrils and nano-clay: Equilibrium isotherm and kinetic modeling

Cited by 114 publications

References 83 publications

Collagen Fibril-Assembled Skin-Simulated Membrane for Continuous Molecular Separation

Collagen Fibril-Assembled Skin-Simulated Membrane for Continuous Molecular Separation

Sequestration of Contaminants from Wastewater: A Review of Adsorption Processes

Leveraging Direct Pyrolysis for the Synthesis of 10 nm Monodispersed Fe3O4/Fe3C NPS@Carbon to Improve SupercapacitANCE in Acidic Electrolyte

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Product

Resources

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Leveraging Direct Pyrolysis for the Synthesis of 10 nm Monodispersed Fe₃O₄/Fe₃C NPS@Carbon to Improve SupercapacitANCE in Acidic Electrolyte