Efficient removal of textile dye using nanosized fly ash derived zeolite-x: Kinetics and process optimization study

Sivalingam, Sivamani

doi:10.1016/j.jtice.2018.10.032

Cited by 56 publications

(19 citation statements)

References 44 publications

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“…Adsorption isotherm was estimated to describe the interaction between CR and mycelial pellet. Four isotherm models of Langmuir, 39 Freundlich, 38 Tempkin, 40 and Dubinin–Radushkevich (D–R) 40 were used to calculate the isotherm parameters and maximum adsorption capacity. Isotherms adsorption experiments were conducted at CR concentrations in the range of 50 to 400 mg/L.…”

Section: Resultsmentioning

confidence: 99%

Biosorption of Congo Red from Aqueous Solutions Based on Self-Immobilized Mycelial Pellets: Kinetics, Isotherms, and Thermodynamic Studies

Pan

Zhang

et al. 2020

ACS Omega

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In the current study, Aspergillus fumigatus and Pseudomonas putida were co-cultured to obtain self-immobilized mycelial pellets to evaluate the decolorization efficiency of Congo red (CR). The obtained co-culture exhibited the highest decolorization efficiency of 99.22% compared to monoculture of A. fumigatus (89.20%) and P. putida (55.04%). The morphology and surface properties of the mycelial pellets were characterized by SEM, FTIR, BET, and XPS. The adsorption kinetics and isotherms were well described by pseudo-second-order and Langmuir models. The findings revealed that the removal efficiency of the mycelial pellet for CR was significantly influenced by physicochemical parameters. Thermodynamic result showed that the biosorption process was endothermic. The maximum adsorption capacity can be obtained from the Langmuir model, which is 316.46 mg/g, it suggests that mycelial pellet was an efficient biosorbent to remove CR from aqueous solution. This study indicates that the mycelial pellet can develop a sustainable approach to eliminate CR from the wastewater.

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Section: Resultsmentioning

confidence: 99%

Biosorption of Congo Red from Aqueous Solutions Based on Self-Immobilized Mycelial Pellets: Kinetics, Isotherms, and Thermodynamic Studies

Pan

Zhang

et al. 2020

ACS Omega

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“…Numerous types of materials such as activated carbon [ 5 ], zeolites [ 6 ], lignocellulosic materials [ 7 ], clays [ 8 ], double-layered hydroxides [ 9 ], metal-organic networks (MOFs) [ 10 ], magnetic materials [ 11 ], metal oxides [ 12 ], graphene oxide [ 13 ], silica [ 14 ], polymeric materials [ 15 , 16 ], carbon nanotubes [ 17 ], agricultural wastes [ 18 ], chitosan [ 19 ], food-processing by-products [ 20 ], clays [ 21 ], dendritic polymers [ 22 ], and hydroxyapatite based materials [ 23 ] were applied as dye adsorbents in synthetic aqueous solutions and industrial wastewater.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of CoFe2O4 Nanoparticles and CoFe2O4-Chitosan Composite for Congo Red and Methyl Orange Removal by Adsorption

et al. 2021

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(1) Background: A comparative research study to remove Congo Red (CR) and Methyl Orange (MO) from single and binary solutions by adsorption onto cobalt ferrite (CoFe2O4) and cobalt ferrite–chitosan composite (CoFe2O4-Chit) prepared by a simple coprecipitation method has been performed. (2) Methods: Structural, textural, morphology, and magnetic properties of the obtained magnetic materials were examined by X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, N2 adsorption–desorption analysis, Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and magnetic measurements. The optimal operating conditions of the CR and MO removal processes were established in batch experiments. The mathematical models used to describe the processes at equilibrium were Freundlich and Langmuir adsorption isotherms. (3) Results: Cobalt ferrite–chitosan composite has a lower specific surface area (SBET) and consequently a lower adsorption capacity than cobalt ferrite. CoFe2O4 and CoFe2O4–Chit particles exhibited a superparamagnetic behavior which enabled their efficient magnetic separation after the adsorption process. The research indicates that CR and MO adsorption onto prepared magnetic materials takes place as monolayer onto a homogeneous surface. According to Langmuir isotherm model that best fits the experimental data, the maximum CR/MO adsorption capacity is 162.68/94.46 mg/g for CoFe2O4 and 15.60/66.18 mg/g for CoFe2O4–Chit in single solutions. The results of the kinetics study revealed that in single-component solutions, both pseudo-first-order and pseudo-second-order kinetics models represent well the adsorption process of CR/MO on both magnetic adsorbents. In binary solutions, adsorption of CR/MO on CoFe2O4 better follows the pseudo-second-order kinetics model, while the kinetic of CR/MO adsorption on CoFe2O4–Chit is similar to that of the dyes in single-component solutions. Acetone and ethanol were successfully used as desorbing agents. (4) Conclusions: Our study revealed that CoFe2O4 and CoFe2O4–Chit particles are good candidates for dye-contaminated wastewater remediation.

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“…In our previous works, several zeolites were successfully synthesized from FA by hydrothermal method [6,7]. Many researchers have reported the removal of pollutants such as arsenic [9,10], radio cesium [11], lead and cadmium [12], fluoride [13], phosphate [14], ammonia ion [15], triphenylmethane dye, acid fuchsin [16] and crystal violet [17] from aqueous solution by zeolites synthesized from FA. In addition, the synthetic zeolite from FA was widely used to treat gaseous pollutants such as sulfur dioxide [18], nitric oxide, nitrogen dioxide, nitrous oxide, and carbon monoxide [19].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZSM-5 zeolite from fly ash and its adsorption of phenol, quinoline and indole in aqueous solution

Liu

2020

Mater. Res. Express

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This work tries to synthesize ZSM-5 zeolite using fly ash (FA) by hydrothermal method and study the adsorption effect of the zeolite on phenol, quinoline and indole in aqueous solution. The zeolites were characterized with x-ray diffraction (XRD), scanning electron microscopy (SEM), x-ray fluorescence (XRF), fourier transformation infrared (FTIR) and N 2 adsorption-desorption isotherm. The characterization results showed that HZSM-5 zeolite was successfully synthesized. The higher mass ratio of sodium carbonate to fly ash during melting is beneficial to improve the purity of ZSM-5 zeolite and its removal rate of organic matters. These results have been confirmed by XRD and principal component analysis (PCA). The adsorption process of phenol, quinoline and indole in aqueous can be well described with the double exponential kinetic model. The adsorption capacity of ZSM-5 zeolite for phenol, quinoline and indoles can be up to 24.41 mg g −1 , 35.99 mg l −1 and 34.05 mg g −1 respectively, and the removal rates can reach up to 82.80%, 84.86% and 83.20% respectively. The optimal pH value for adsorption ranges from 5 to 7.

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Efficient removal of textile dye using nanosized fly ash derived zeolite-x: Kinetics and process optimization study

Cited by 56 publications

References 44 publications

Biosorption of Congo Red from Aqueous Solutions Based on Self-Immobilized Mycelial Pellets: Kinetics, Isotherms, and Thermodynamic Studies

Biosorption of Congo Red from Aqueous Solutions Based on Self-Immobilized Mycelial Pellets: Kinetics, Isotherms, and Thermodynamic Studies

Comparative Study of CoFe2O4 Nanoparticles and CoFe2O4-Chitosan Composite for Congo Red and Methyl Orange Removal by Adsorption

Synthesis of ZSM-5 zeolite from fly ash and its adsorption of phenol, quinoline and indole in aqueous solution

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