Kinetic, isotherm, and thermodynamic studies on Cr(VI) adsorption using cellulose acetate/graphene oxide composite nanofibers

Raya, Indah; Widjaja, Gunawan; Mahmood, Zaid; Kadhim, Abed J.; Vladimirovich, Kabanov Oleg; Mustafa, Yasser Fakri; Kadhim, Mustafa M.; Mahmudiono, Trias; Husein, Ismail; Kafi‐Ahmadi, Leila

doi:10.1007/s00339-022-05307-4

Cited by 27 publications

(8 citation statements)

References 44 publications

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“…Therefore, before the water is released into the environment, Cr (VI) must be removed from it. Diverse bio-For the purpose of decreasing or eliminating heavy metal ions, a CS/TiO 2 nanocomposite adsorbent was created 29) . The capacity of CS nanoparticle coated with oxides to remove metal ions has been examined 30) .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Chitosan-TiO<sub>2</sub> Nanocomposite for Efficient Cr(VI) Removal from Contaminated Wastewater Sorption Kinetics, Thermodynamics and Mechanism

et al. 2023

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materials have been studied to remove the deadly heavy metals from wastewaters, which is one of the promising sustainable mitigation methods 6) . Chromium ions and other heavy metals were removed using a variety of methods, such as adsorption 7,8) , membrane filtering 9) , advanced oxidation 10) , and precipitation 11,12) . Due to its low cost and economy, adsorption is a suitable method for reducing the level of Cr ions. Its effectiveness is dependent on the number of sites that can be combined with adsorbate ions 13) . Nanocomposites produced by the photolysis technique 14−22) are viable options for the adsorption of certain heavy metals from water 23−25) due to their higher specific area and porosity. Heavy metal reduction or removal from water can be accomplished using chitosan-based nanoparticles as an effective catalyst (adsorbate) 26,27) . Chitosan nanosheets have recently been suggested for use in several wastewater treatment processes 28) . Additionally, chitosan s matrix was doped with or mixed with inorganic nanoparticles like TiO 2 and ferrite. For instance, TiO 2 was integrated into CS nanosheets to absorb heavy ions from wastewater.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Chitosan-TiO<sub>2</sub> Nanocomposite for Efficient Cr(VI) Removal from Contaminated Wastewater Sorption Kinetics, Thermodynamics and Mechanism

et al. 2023

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“…[12][13][14] To date, chemical methods, biological methods, and physical methods have been developed for the elimination of the Cr(VI) from aqueous solutions, such as reduction and neutralization precipitation, electrochemical processes, photocatalysis, ion exchange, membrane separation and adsorption methods. [15][16][17][18][19] The most common conventional method for Cr(VI) removal is reduction to Cr(III) at acid condition and precipitated to Cr(OH) 3 under alkaline conditions. However, the disadvantage of the method is that it will generate solid waste, while is easy to cause secondary pollution.…”

Section: Introductionmentioning

confidence: 99%

“…Adsorption is considered as the most promising method due to its high efficiency, easy to operate, economical, renewable, and technological feasibility. 20,21 Numerous adsorbents including silica gel, 10,22 various types of nanomaterials, [23][24][25] nanobers, 19,26 biochar, 20,27 hydrogel, 28 functionalized polymers, 8,29 metal composite 30 and metal-organic frameworks 31 have been used for Cr(VI) removal.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a phenylboronic acid and aldehyde bi-functional group modified silica absorbent and applications in removing Cr(vi) and reducing to Cr(iii)

et al. 2023

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“…This character of the surface is extremely important in the interaction of the material with another one. For example, the determination of the acidity or basicity of the surface in materials used as adsorbents is very important in terms of determining which organic pollutants or heavy metals will be adsorbed to the surface 10,11 . Besides, this character of surfaces can also affect properties such as adhesiveness, wettability, coating, etc.…”

Section: Introductionmentioning

confidence: 99%

“…For example, the determination of the acidity or basicity of the surface in materials used as adsorbents is very important in terms of determining which organic pollutants or heavy metals will be adsorbed to the surface. 10,11 Besides, this character of surfaces can also affect properties such as adhesiveness, wettability, coating, etc. Therefore, the investigation of surface properties is extremely important in terms of determining and diversifying the application fields of materials.…”

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confidence: 99%

A comparative study of surface properties of Urtica dioica (nettle) leaves, roots, and seeds and examination of their ability to separate xylene isomers

Işık

Çakar

Cankurtaran

2022

Phytochemical Analysis

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Introduction Urtica dioica (nettle) is a plant species of the Urticaceae family that grows in various parts of the world and exerts antioxidant, antibacterial, antiulcer, antiviral, and anti‐inflammatory effects. Their leaves, roots, and seeds are used in various fields such as food, medicine, and cosmetics. Objectives Inverse gas chromatography (IGC) was used to evaluate the surface characteristics and separation ability of U. dioica leaves, roots, and seeds. Characterization of these biomasses was performed by Fourier transform infrared spectroscopy (FTIR) analyses. Methodology The surface properties of the biomasses including dispersive surface energy, adsorption enthalpy, Gibbs free energy, and acidity‐basicity constants were determined at infinite dilution using various organic solvents. These properties were compared with each other. Dispersive surface energies were calculated using the Dorris–Gray, Donnet–Park, and Schultz methods. The accuracy of these methods and their applicability were evaluated. In the last stage of this study, the separation of xylene isomers was investigated by using U. dioica biomasses as stationary phases. Results The surface functional groups were determined by FTIR analysis. As a result of the IGC studies, it was found that the adsorption of polar solvents on biomasses occurred exothermically and spontaneously. Besides, it was found that the surfaces of biomasses were basic. From the retention diagrams and selectivity coefficients, it was determined that xylene isomers were effectively separated. Conclusion IGC is a promising, low‐cost, easy‐to‐apply, and high‐accuracy technique for the investigation of the surface properties of biomasses and their ability to separate isomers.

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Kinetic, isotherm, and thermodynamic studies on Cr(VI) adsorption using cellulose acetate/graphene oxide composite nanofibers

Cited by 27 publications

References 44 publications

Synthesis of Chitosan-TiO<sub>2</sub> Nanocomposite for Efficient Cr(VI) Removal from Contaminated Wastewater Sorption Kinetics, Thermodynamics and Mechanism

Synthesis of Chitosan-TiO<sub>2</sub> Nanocomposite for Efficient Cr(VI) Removal from Contaminated Wastewater Sorption Kinetics, Thermodynamics and Mechanism

Preparation of a phenylboronic acid and aldehyde bi-functional group modified silica absorbent and applications in removing Cr(vi) and reducing to Cr(iii)

A comparative study of surface properties of Urtica dioica (nettle) leaves, roots, and seeds and examination of their ability to separate xylene isomers

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