Development of a polyaniline-lignocellulose composite for optimal adsorption of Congo red

Debnath, Sushanta; Ballav, Niladri; Maity, Arjun; Pillay, Kriveshini

doi:10.1016/j.ijbiomac.2015.01.011

Cited by 59 publications

(11 citation statements)

References 64 publications

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“…e response surface methodology is a statistical analysis tool that predicts and develops a regression model for quantitative data obtained during an experiment [22].…”

Section: Response Surface Methodology and Statistical Analysis Of The...mentioning

confidence: 99%

“…Nowadays, the method of optimization by experimental design is increasingly appealing to researchers because it permits the extraction of maximum information with a minimum of simulation results. One of the adsorption optimization methods is the response surface methodology, which is an efficient statistical tool, making it possible to explain interactions independent of operating parameters [21][22][23]. e central composite design was used in this work to optimize the factors that affect the adsorption of HQ and R from solution.…”

Section: Introductionmentioning

confidence: 99%

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Optimized Removal of Hydroquinone and Resorcinol by Activated Carbon Based on Shea Residue (Vitellaria paradoxa): Thermodynamics, Adsorption Mechanism, Nonlinear Kinetics, and Isotherms

Amola

Kamgaing

Tagne

et al. 2022

Journal of Chemistry

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The present work demonstrates the adsorption of hydroquinone (HQ) and resorcinol (R) by activated carbon based on shea residue (Vitellaria paradoxa). The adsorbent was prepared chemically by impregnation with sulfuric acid and coded by the acronym CAK-S. The central composite design (CCD) was used to optimize the main factors that influence the adsorption of HQ or R by activated carbon such as the initial concentration, the pH of the solution, the contact time, and the mass of the carbon on the expected response, which is the adsorbed quantity of the target pollutants. The optimal conditions obtained from the statistical analysis are as follows: concentration of 158 mg/L, pH 3, time of 120 min, and mass of 50 mg for the adsorption of HQ and concentration of 180 mg/L, pH 3, time of 86 min, and mass of 118 mg for the adsorption of R. The maximum quantities of HQ and R adsorbed are 45.02 mg/g and 33.65 mg/g, respectively. The analysis of variance (ANOVA) showed a good relationship between the variables involved with the coefficients of determination R2 = 98.69% for the adsorption of hydroquinone and R2 = 90.55% for that of resorcinol, which means that the model is more suitable to express the adsorbed amount according to the four optimized parameters. The experimental data obtained under these optimal conditions were simulated with two and three parameter nonlinear isotherm models as well as kinetic models. The results show that Elovich kinetic model better describes the adsorption of HQ and R, indicating chemisorption with heterogeneous active sites on the surface of CAK-S. Temkin’s two-parameter model shows that adsorption occurs on heterogeneous surfaces with a nonuniform adsorption energy distribution at the surface and Sips’s three-parameter model confirms the heterogeneity of the surface with a localized adsorption of HQ or R by CAK-S. The thermodynamics study has shown that the adsorption is endothermic ( Δ H 0 > 0 ) and spontaneous ( Δ G 0 < 0 ).

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“…e response surface methodology is a statistical analysis tool that predicts and develops a regression model for quantitative data obtained during an experiment [22].…”

Section: Response Surface Methodology and Statistical Analysis Of The...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimized Removal of Hydroquinone and Resorcinol by Activated Carbon Based on Shea Residue (Vitellaria paradoxa): Thermodynamics, Adsorption Mechanism, Nonlinear Kinetics, and Isotherms

Amola

Kamgaing

Tagne

et al. 2022

Journal of Chemistry

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“…Samani et al [60] reported PANI/PEG (polyethylene glycol) composite for the removal of hexavalent chromium ions (Cr(VI)), which had the maximum adsorption capacity (q max ) of 68.97 mg/g. Debnath et al [63] reported a PANI/lignocellulose composite with q max of 1672.5 mg/g for Congo red (CR) removal. PANI/chitosan was studied by Janaki et al [64] for the removal of dyes (CR, Coomassie Brilliant Blue (CBB), and Remazol Brilliant Blue R (RBBR)).…”

Section: Polyaniline and Its Composites For Wastewater Treatmentmentioning

confidence: 99%

Polyaniline-Based Nanocomposites for Environmental Remediation

Maponya¹,

Hato²,

Somo³

et al. 2021

Trace Metals in the Environment - New Approaches and Recent Advances

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With growth in civilisation and industrialisation, there is an increase in the release of toxic heavy metal ions and dyes into water system, which is of public concern. As a result, appropriate treatment methods have to be implemented in order to mitigate and prevent water pollution. The discovery of nanotechnology has led to the development and utilisation of various nanoadsorbent for the removal of pollutants from water. PANI nanostructures and nanocomposites are noble adsorbents that have gained popularity in addressing water pollution issues and have been reported in literature. In this chapter, the main focus is on the synthesis of PANI nanocomposites and nanostructures and their application as efficient adsorbents for water treatment. Detailed discussions on different synthetic routes and characterisation have been dedicated to applications of these materials and are compared for the adsorptive removal of heavy metal ions and dyes from water.

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“…Lignocellulose (including cellulose, hemicellulose, and lignin) has become a research hotspot in the field of adsorption due to its advantages of abundant resources, low price, biocompatibility, and renewability (Debnath et al 2015;Rodrigues et al 2019;Wu et al 2020). Among them, lignin is an amorphous biopolymer cross-linked by p-hydroxyl phenylpropane units (p-coumaryl, coniferyl, sinapyl alcohol) (Li et al 2019(Li et al , 2020.…”

Section: Introductionmentioning

confidence: 99%

A bowl-shaped biosorbent derived from sugarcane bagasse lignin for cadmium ion adsorption

Peng

2020

Cellulose

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Lignocellulosic materials have received wide interest in adsorption of contaminants in water due to their abundance, eco-friendliness, and low cost. However, the development of new adsorbents from lignocellulose with excellent performance is still a big challenge. In this work, a new bowl-shaped biosorbent (BSB) with surface functionality is prepared from lignin that is extracted from the abundant sugarcane bagasse. The product is characterized by scanning electron microscopy, infrared spectrum, thermo gravimetric analysis and N 2 adsorption techniques. The results show that the obtained BSB is obviously bowlshaped in microscale with an enlarged surface area, and contains numerous oxygen and nitrogen functional groups. It exhibits an enhanced adsorption capacity toward Cd 2? that is 3.2 times of the original lignin. The adsorption process of Cd 2? by the BSB is well fitted by the Freundlich isothermal model and the pseudo-second-order kinetic model, respectively. The adsorption mechanism involves surface complexation, ion-exchange, electrostatic attraction, chemical precipitation and physical adsorption, etc., among them, the surface complexation is the rate-controlling step. Moreover, it shows a good reusability during five repeated cycling for Cd 2? adsorption.

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Development of a polyaniline-lignocellulose composite for optimal adsorption of Congo red

Cited by 59 publications

References 64 publications

Optimized Removal of Hydroquinone and Resorcinol by Activated Carbon Based on Shea Residue (Vitellaria paradoxa): Thermodynamics, Adsorption Mechanism, Nonlinear Kinetics, and Isotherms

Optimized Removal of Hydroquinone and Resorcinol by Activated Carbon Based on Shea Residue (Vitellaria paradoxa): Thermodynamics, Adsorption Mechanism, Nonlinear Kinetics, and Isotherms

Polyaniline-Based Nanocomposites for Environmental Remediation

A bowl-shaped biosorbent derived from sugarcane bagasse lignin for cadmium ion adsorption

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