Optimization, kinetic and thermodynamic studies for removal of Brilliant Red (X-3B) using Tannin gel

Rahman, Mohammed M.; Akter, Nahida; Karim, Mohammad Razaul; Ahmad, N.; Siddiquey, Iqbal Ahmed; Bahadur, Newaz Mohammed; Hasnat, Mohammad A.

doi:10.1016/j.jece.2013.11.023

Cited by 32 publications

(6 citation statements)

References 32 publications

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“…The Freundlich isotherm is based on the multilayer adsorption (heterogeneous surface) [13]. The linearized form of Freundlich isotherm is given in Equation…”

Section: Freundlich Isothermmentioning

confidence: 99%

Removal of Pigments from Palm Oil Using Activated Ibusa Kaolinite: Equilibrium, Kinetic and Thermodynamic Studies

Okafor¹,

Nnanwube²,

Obibuenyi³

et al. 2019

JMMCE

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The effectiveness of Ibusa kaolinite as an adsorbent in removing pigments from palm oil has been investigated in this study. Ibusa kaolinite was prepared as an adsorbent by treating it with hydrochloric acid. The surface area of the clay was found to increase with increase in acid dosage up to a maximum and then decreased while its cation exchange capacity decreased with increase in acid dosage. The activated clay was used as an adsorbent for the removal of pigments from palm oil. The bleaching process was investigated by varying the clay dosage, acid concentration and temperature. The highest removal of pigments was recorded at 7 M HCl concentration, 4 g clay dosage and 100˚C temperature, and about 97.4% pigments were removed in 80 minutes. Four isotherm models, three kinetic models, and the intra-particle diffusion model were applied to fit the experimental data. It was found that the equilibrium data were best represented by the Temkin isotherm model. The experimental data fitted well the pseudo-second-order kinetic model. Diffusion studies indicated that intra-particle diffusion is not the sole rate-controlling factor. The bleaching process was found to be spontaneous and endothermic, with increasing randomness of adsorbed species.

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“…The Freundlich isotherm is based on the multilayer adsorption (heterogeneous surface) [13]. The linearized form of Freundlich isotherm is given in Equation…”

Section: Freundlich Isothermmentioning

confidence: 99%

Removal of Pigments from Palm Oil Using Activated Ibusa Kaolinite: Equilibrium, Kinetic and Thermodynamic Studies

Okafor¹,

Nnanwube²,

Obibuenyi³

et al. 2019

JMMCE

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“…Estos compuestos también son muy utilizados en la producción de colorantes, polímeros, fungicidas y bebidas, en la detección de proteínas y alcaloides en laboratorio, en la industria farmacéutica, en el tratamiento de agua y como adhesivos para la producción de tableros aglomerados de madera (Gonçalves et al, 2008;Gonçalves et al, 2017;Kim et al, 2007;Mori et al, 2003;Rahman et al, 2014;Vieira et al, 2014) Los taninos producidos de forma natural a partir de metabolitos secundarios en vegetales pueden ser encontrados en corteza, hojas, duramen y raíces de los árboles, esta familia de compuestos se puede dividir en dos grandes grupos, los hidrolizables y los condensables (Volz y Clause, 2001; Zhou y Du, 2019).…”

Section: Los Taninosunclassified

The Impact of Climate Change on the Ecosystem Services of Rivers

González

2023

Las Ciencias Biológicas Y La Construcción De Nuevos Paradigmas De Conocimiento

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“…Since the adsorbent surface is positively charged at lower pH values, the strong electrostatic attraction between the positive charges of the adsorbent and the negative charges of dye molecules leads to the maximum adsorption of dye. If the pH increases, the number of negative charges of the sites increase and positive charges decrease, so the electrostatic repulsion of negatively charged tannin and molecules of anionic dye leads to lower adsorption of dye [42]. The low adsorption of DY86 in alkaline environment was due to the competition between OH -ions and anionic dye molecules to be adsorbed on the sites.…”

Section: Effect Of Ph On the Adsorption Capacitymentioning

confidence: 99%

“…Thermodynamic parameters such as ΔG˚, ΔH˚, and ΔS˚could be calculated from the following equations [42,43]:…”

Section: Effect Of Temperature On the Thermodynamic Parametersmentioning

confidence: 99%

“…Since the involved forces in physical adsorption are weak, the heat of adsorption for the physical adsorption would be less than that of 21 kJ/mol. However, involved forces in chemical adsorption are stronger than that of physical adsorption and heat of chemical adsorption like heat of chemical reactions is about 21-42 kJ/mol [42,43].…”

Section: Effect Of Temperature On the Thermodynamic Parametersmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis of oak gall tannin-immobilized hexagonal mesoporous silicate (OGT-HMS) as a new super adsorbent for the removal of anionic dye from aqueous solution

Binaeian

Seghatoleslami

Chaichi

2016

Desalination and Water Treatment

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A B S T R A C TTannin as a natural biomass has been extracted from oak gall and was immobilized on hexagonal mesoporous silicate (HMS) in order to remove direct yellow 86 (DY86) from aqueous solution. The characteristics of the oak gall tannin-HMS adsorbent were substantiated by different techniques such as FTIR, TEM, TGA, BET, and XRD. From the BET analysis, a decline of 75.61% for the surface area of HMS nanoparticles was observed and indicates the proper coating through tannin. In order to analyze the adsorption data, five different isotherms were utilized and nonlinear regression scheme was employed using MATLAB software. It was concluded from the Langmuir isotherm that the maximum monolayer adsorption capacity was 435.5 mg g −1 . The thermodynamic analysis of this study also revealed that the adsorption was feasible, since the process was spontaneous and endothermic. The findings also indicate that the adsorption of DY86 follows the pseudo-second-order kinetic model.

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Optimization, kinetic and thermodynamic studies for removal of Brilliant Red (X-3B) using Tannin gel

Cited by 32 publications

References 32 publications

Removal of Pigments from Palm Oil Using Activated Ibusa Kaolinite: Equilibrium, Kinetic and Thermodynamic Studies

Removal of Pigments from Palm Oil Using Activated Ibusa Kaolinite: Equilibrium, Kinetic and Thermodynamic Studies

The Impact of Climate Change on the Ecosystem Services of Rivers

Synthesis of oak gall tannin-immobilized hexagonal mesoporous silicate (OGT-HMS) as a new super adsorbent for the removal of anionic dye from aqueous solution

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