Experimental study on the adsorptive behavior of Congo red in cationic surfactant-modified tea waste

Foroughi-Dahr, Mohammad; Abolghasemi, Hossein; Esmaieli, Mohamad; Nazari, Ghadir; Rasem, Bettina

doi:10.1016/j.psep.2015.03.005

Cited by 103 publications

(36 citation statements)

References 52 publications

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“…This trend is in agreement with the hypothesis of surfactant self-association into monolayer and bilayer structures. This hypothesis on the mechanisms of surfactant self-assembly at the surface of the BGS biomass was based on the different phenomena reported to take place in the interaction of ionic surfactants with lignocellulosic surfaces [6,9]. Since the validity of this sorption process for surfactant/biomass systems has not been proven yet, in this study further arguments to support the defining of a possible model are provided.…”

Section: Physicochemical Characterization Of Mbgs Sorbentsmentioning

confidence: 82%

“…Depending on these factors, and above all concentration, surfactant molecules may be self-organizing on the biomass surface through multiple forms: as monolayer (called hemimicelle), bilayer (called admicelle), spherical and cylindrical aggregates ( Figure 5). These 6(2) (2017) 38-50 organized structures can be continuously distributed along the surface, or they can form patches of aggregated domains [6,9]. Sorption isotherms usually provide the information concerning the onset of surfactant selfassembly occurring when the solution concentration and the surface excess are altered.…”

Section: Physicochemical Characterization Of Mbgs Sorbentsmentioning

confidence: 99%

“…This can be understandable if the model of the biomass modification by surfactant is taken into account for interpretation ( Figure 6). It is clear that the formation of surfactant complex aggregates on the biomass surface increases the number of added cationic groups, but not the number of available active centers for the interaction with the present anions in the solution [9].…”

Section: Physicochemical Characterization Of Mbgs Sorbentsmentioning

confidence: 99%

“…Sorption of anions from the solution on the MBGS biosorbent surface can be observed in two ways, depending on the mechanism of monolayer or bilayer complex aggregates formation [9]. The first way of surfactants interaction (monolayer) is more likely at lower initial surfactant concentrations, when the ion exchange capacity is reached at almost 100% or slightly lower.…”

Section: Physicochemical Characterization Of Mbgs Sorbentsmentioning

confidence: 99%

“…In this sense, the following cationic surfactants are mainly used: octadecyltrimethylammonium bromide (C18, OTAB), cetyltrimethylammonium bromide (C16, CTAB) or chloride (C16, CTAC), cetylpyridinium bromide (C16, CPB) or chloride (C16, CPC), tetradecyltrimethylammonium bromide (C14, TTAB) and dodecylpyridinium chloride (C12, DPC) [6]. For the purpose of making sorbents, modifications of many biomasses or other substrates were carried out as follows: cellulose fibers with CTAB [7], wheat straw with CPB to remove anionic dyes [8], the tea waste with CTAB and CPB for the removal of anionic congo-red [9], silkworm exuviae with CTAB for removing anionic methyl orange [10], yeast biomass and lichens with CTAB to remove chromates [11], barley straw with CPC for the removal of food and mineral oils [12], coir pith with CTAB for the removal of chromates, sulphates and thiocyanates [13,14], zeolite with CTAB to remove phosphate [15], acetate-cellulose membranes with TTAB, CTAB, CTAC, and CPC for the removal of nitrates [16].…”

Section: Introductionmentioning

confidence: 99%

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The preparation and utilization of the cationic sorbent based on the surfactant modified bottle gourd shell

Marković-Nikolić¹,

Bojić²,

Petković³

et al. 2017

Adv Techol

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The surface of the bottle gourd shell (BGS), a solid agricultural residue of Lagenaria vulgaris Ser. was chemically modified using a cationic surfactant, hexadecyltrimethylammonium chloride (HTAC). The success of the modification was confirmed by FTIR spectroscopy. Chemical characterization of the lignocellulosic BGS biomass and the surfactant modified bottle gourd shell (MBGS) was carried out using the compositional and elemental analysis. The amount of surfactant sorbed on the BGS surface was measured as a function of the surfactant bulk concentration. Sorption isotherms were used to verify self-assembly models of cationic surfactant sorption onto oppositely charged MBGS substrates. The shape of sorption isotherms was applied to describe the behavior of the surfactant/BGS system. The surfactant modified shell was tested as a sorbent for the removal of phosphate and nitrate from contaminated aqueous solutions. The sorption of anionic pollutants on MBGS was performed in a series of batch sorption experiments at 20 o C. It was found that the MBGS yielded sorption efficiency was 40% for phosphate and 22% for nitrate. The sorption mechanism involving the ion exchange might be responsible for the uptake of anions. The morphology and surface properties of the MBGS sorbent before and after sorption of anionic pollutants were analyzed by SEM methods. Compared to other non-surfactant sorbents, the advantage of MBGS as a sorbent is that it can be used for the removal of anionic pollutants not only from aqueous solutions but also from the emulsified oil wastewater or nonpolar effluents.

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Section: Physicochemical Characterization Of Mbgs Sorbentsmentioning

confidence: 82%

Section: Physicochemical Characterization Of Mbgs Sorbentsmentioning

confidence: 99%

Section: Physicochemical Characterization Of Mbgs Sorbentsmentioning

confidence: 99%

Section: Physicochemical Characterization Of Mbgs Sorbentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The preparation and utilization of the cationic sorbent based on the surfactant modified bottle gourd shell

Marković-Nikolić¹,

Bojić²,

Petković³

et al. 2017

Adv Techol

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Transformation of Mytella falcata residual shell into CaAl/LDH adsorbent: Removal of methyl orange and methylene blue dyes

Henrique

Duarte

et al. 2023

Can J Chem Eng

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This study analyzed the viability of using malacoculture residue (Mytella falcata) to produce layered double hydroxides (LDHs) and for its subsequent use as an adsorbent. The CaAl/LDH‐RE material was produced with calcium oxide from the residue and the CaAl/LDH‐AP was produced with a commercial reagent. Both were used to remove methyl orange (MO) and methylene blue (MB) dyes. The CaAl/LDH‐RE presented a surface area of 28.54 m2 g−1, being 65.62% larger than the CaAl/LDH‐AP material (17.23 m2 g−1). The adsorbents showed mesopores distributed on a surface formed by plates in the form of hexagonal sheets arranged in an overlapping manner. The dosage of 0.05 g L−1 obtained the removal of 95% and 97% for MO, while for MB it was 94% and 93% using the adsorbents LDH/CaAl‐AP and LDH/CaAl‐RE, respectively. The system reached equilibrium at 90 min for MO and 120 min for MB. The pseudo‐second order model well represented the kinetic data reaching 11.36 mg g−1 (CaAl/LDH‐RE) and 8.42 mg g−1 (CaAl/LDH‐AP) for MO, and 4.47 mg g−1 (CaAl/LDH‐RE) and 4.14 mg g−1 (CaAl/LDH‐AP) for MB. The Freundlich model better represented the isothermal data, where the temperature exerted little influence. Adsorbents showed similar removal percentages in real and synthetic matrices. The LDH/CaAl‐RE can be applied in up to 3 cycles, maintaining its adsorption capacity. These results corroborate the use of MFW to produce CaAl/LDH‐RE, which can be used for the efficient removal of organic pollutants in an aqueous solution.

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Probing the Interaction between Fluoride and the Polysaccharides in Al(III)- and Zr (IV)-Modified Tea Waste by Using Diverse Analytical Characterization Techniques

et al. 2017

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The objective of this study was to assess the efficacy of interaction between fluoride and a household tea waste (HTW) material modified using aluminium sulfate and zirconyl oxy chloride. Tea waste is an inexpensive source of biomass comprising lignin, cellulose and hemicelluloses, condensed tannins and proteins. The incorporation of Al (III) and Zr (IV) was accomplished by dilute nitric acid hydrolysis of the tea waste material. The polymeric aluminium and zirconium cations interact with tea waste through the surface hydroxyl, carbonyl, carboxylic functional groups and glycosidic linkages. Since, Al (III) and Zr (IV) ion are hard acids, they interact with the hard base fluoride effectively. The mechanism was supported through Thermogravimetric analysis (TGA), Fourier Transform Infra‐Red (FT‐IR) spectrometry, Fourier Transform Raman (FT‐Raman) spectrometry, Energy Dispersive X ray spectrometry (EDS), X‐ray Diffraction (XRD) and X‐ray Photo Electron Spectroscopy (XPS) techniques. Preliminary batch adsorption studies resulted in linear and nonlinear Langmuir adsorption capacities as 17.51 and 17.54 mg g−1 respectively at pH 7.0. The sustainable adsorbent shows prospective application for defluoridation of water.

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Experimental study on the adsorptive behavior of Congo red in cationic surfactant-modified tea waste

Cited by 103 publications

References 52 publications

The preparation and utilization of the cationic sorbent based on the surfactant modified bottle gourd shell

The preparation and utilization of the cationic sorbent based on the surfactant modified bottle gourd shell

Transformation of Mytella falcata residual shell into CaAl/LDH adsorbent: Removal of methyl orange and methylene blue dyes

Probing the Interaction between Fluoride and the Polysaccharides in Al(III)- and Zr (IV)-Modified Tea Waste by Using Diverse Analytical Characterization Techniques

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