Sorption Study of a Basic Dye “Gentian Violet” from Aqueous Solutions Using Activated Bentonite

Bellir, K.; Bouziane, I. Sadok; Boutamine, Zineb; Lehocine, M. Bencheikh; Méniai, Abdeslam-Hassen

doi:10.1016/j.egypro.2012.05.107

Cited by 34 publications

(12 citation statements)

References 20 publications

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“…The bioadsorbent treated with water had a better percentage of removal when compared to the bioadsorbent treated with NaOH irrespective of the dye. Studies reported in the literature mention that there is a decrease in the adsorption of the dye when using modified lignocellulosic waste like “Quimbimbo” [ 11 ] and hydrophilic silica aerogel [ 2 ] as opposed to Bentonite [ 29 ], modified Cliboptilolite [ 23 ], banyan aerial roots [ 13 ], AlPO-34 [ 4 ] and the bottom ashes of the materials used in the soybean deoiling process [ 33 ] where the adsorption of GV and PR increases with increasing concentration of the dye. This increase is possibly favored by the increase in the number of collisions between the molecules, causing the adsorption process to be facilitated and therefore a significant decrease in the mass transfer between the liquid and solid phase.…”

Section: Resultsmentioning

confidence: 99%

“…Adsorption has shown to have some advantages over the mentioned methods due to its high efficiency in the removal of dyes from wastewater including dilute solutions, and the absence of sediment produced in its operation [ 4 , 12 , 19 , 23 , 24 , 25 , 26 ]. Different adsorbents have been synthesized for the removal of dyes from clays such as SBA-15, Bentonite, and other materials [ 2 , 4 , 17 , 27 , 28 , 29 ], up to the manufacture of activated carbon from different sources, however, there are large losses and high operating costs due to the possibility of pore blockage, hydroscoping, and incineration when using high temperatures [ 5 , 19 , 22 , 24 , 27 , 28 , 29 ]. These drawbacks have encouraged several researchers to study other cheap, abundant materials that have similar efficiency to materials synthesized by chemical processes, therefore the use of agro-industrial residues was considered, which are cheap and, easily available materials that only need a simple pretreatment and are materials with properties that can be exploited in another industry as well as being good candidates for the adsorption of various contaminants [ 8 , 12 , 14 , 19 , 22 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

“…Different adsorbents have been synthesized for the removal of dyes from clays such as SBA-15, Bentonite, and other materials [ 2 , 4 , 17 , 27 , 28 , 29 ], up to the manufacture of activated carbon from different sources, however, there are large losses and high operating costs due to the possibility of pore blockage, hydroscoping, and incineration when using high temperatures [ 5 , 19 , 22 , 24 , 27 , 28 , 29 ]. These drawbacks have encouraged several researchers to study other cheap, abundant materials that have similar efficiency to materials synthesized by chemical processes, therefore the use of agro-industrial residues was considered, which are cheap and, easily available materials that only need a simple pretreatment and are materials with properties that can be exploited in another industry as well as being good candidates for the adsorption of various contaminants [ 8 , 12 , 14 , 19 , 22 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 ]. These materials are mainly constituted by lignocellulosic groups, peels of various fruits and vegetables furthermore, these materials have been used as adsorbents of various dyes including PR and GV with good results [ 4 , 5 , 11 , 12 , 13 , 18 , 22 , 23 , 24 , 25 , 26 , 33 , 35 , 36 ].…”

Section: Introductionmentioning

confidence: 99%

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Removal of Anionic and Cationic Dyes Present in Solution Using Biomass of Eichhornia crassipes as Bioadsorbent

et al. 2022

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The discharge of large amounts of effluents contaminated with gentian violet (GV) and phenol red (PR) threatens aquatic flora and fauna as well as human health, which is why these effluents must be treated before being discarded. This study seeks the removal of dyes, using water lily (Eichhornia crassipes) as an adsorbent with different pretreatments. PR and GV were analyzed by a UV-visible spectrophotometer. Equilibrium experimental data showed that Freundlich is the best model to fit PR and SIPS for GV, showing that the adsorption process for both dyes was heterogeneous, favorable, chemical (for GV), and physical (for PR). The thermodynamic analysis for the adsorption process of both dyes depends directly on the increase in temperature and is carried out spontaneously. The Pseudo first Order (PFO) kinetic model for GV and PR is the best fit for the dyes having an adsorption capacity of 91 and 198 mg/g, respectively. The characterization of the materials demonstrated significant changes in the bands of lignin, cellulose, and hemicellulose, which indicates that the functional groups could participate in the capture of the dyes together with the electrostatic forces of the medium, from which it be concluded that the adsorption process is carried out by several mechanisms.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Removal of Anionic and Cationic Dyes Present in Solution Using Biomass of Eichhornia crassipes as Bioadsorbent

et al. 2022

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“…where K d is the equilibrium constant for adsorption; T is the temperature, K; R is the universal gas constant; DG, DH, DS are Gibbs free energy change, enthalpy and entropy change of the process, respectively. The values of DH, and DS are calculated from the slope and intercept of the plot lnK d vs. 1/T [18].…”

Section: Effect Of Temperaturementioning

confidence: 99%

Cellulose Acetate Hollow Fiber Membranes from Banana Stem Fibers Coated by TiO2 for Degradation of Waste Textile Dye

Wafiroh¹,

Abdulloh²,

Widati³

2021

ChChT

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Cellulose acetate hollow fiber membrane from banana stem fibers coated by TiO2 (CAHFMT) was prepared and characterized as an alternative material for degradation of waste textile dye. Its applicability was demonstrated by mechanical properties, FTIR, SEM, thermal resistance, performance, and degradation efficiency. Cellulose acetate (CA) was synthesized from banana stem fibers by swelling stage, acetylation reaction, and hydrolysis reaction. CA was modified using TiO2 of various concentrations. CAHFMT with 22 % w/v dope concentration has the optimum mechanical properties (stress, strain and Young’s modulus), as well as hydrophilic properties. The performances of CAHFMT with Congo red were determined. The SEM results showed that the membrane had rigid pores. Moreover, this research stated that CAHFMT could be a solution to overcome economical and effective problems.

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“…An adsorption technique has been used to remove wastewater with GV owing to the high removal efficiency and stability. For example, Bellir et al reported the removal of GV from aqueous solution using bentonite as the absorbant. The succinylated sugarcane bagasse could also be used as the absorbent to remove the GV .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Cu vanadate nanorods for visible‐light photocatalytic degradation of gentian violet

Lin

Pei

Tian

et al. 2015

Crystal Research and Technology

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Cu vanadate nanorods have been synthesized via the hydrothermal process using polymer polyvinyl pyrrolidone (PVP) as the surfactant. X-ray diffraction (XRD) shows that the nanorods are composed of monoclinic Cu 5 V 2 O 10 phase. Scanning electron microscopy (SEM) observation shows that the diameter and length of the nanorods are 50-300 nm and 3 μm, respectively. PVP concentration, hydrothermal temperature and duration time play essential roles in the formation and sizes of the Cu vanadate nanorods. A PVPassisted nucleation and crystal-growth process is proposed to explain the formation of the Cu vanadate nanorods. Gentian violet (GV) is used to evaluate the photocatalytic activities of the Cu vanadate nanorods under solar light. The GV concentration clearly decreases with increasing irradiation time, and content of the Cu vanadate nanorods. GV solution with the concentration of 10 mg L −1 can be totally degraded under solar light irradiation for 4 h using 10 mg Cu vanadate nanorods. The Cu vanadate nanorods have good photocatalytic activities for the degradation of GV under solar light.

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Sorption Study of a Basic Dye “Gentian Violet” from Aqueous Solutions Using Activated Bentonite

Cited by 34 publications

References 20 publications

Removal of Anionic and Cationic Dyes Present in Solution Using Biomass of Eichhornia crassipes as Bioadsorbent

Removal of Anionic and Cationic Dyes Present in Solution Using Biomass of Eichhornia crassipes as Bioadsorbent

Cellulose Acetate Hollow Fiber Membranes from Banana Stem Fibers Coated by TiO2 for Degradation of Waste Textile Dye

Synthesis of Cu vanadate nanorods for visible‐light photocatalytic degradation of gentian violet

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