Exploiting response surface methodology for experimental modeling and optimization of CO2 adsorption onto NaOH-modified nanoclay montmorillonite

Khajeh, Mojtaba; Ghaemi, Ahad

doi:10.1016/j.jece.2020.103663

Cited by 52 publications

(19 citation statements)

References 43 publications

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“…Furthermore, analysis of variance (ANOVA) was used for further investigating the statistical analysis of the experimental results collected regarding CR and COD reduction of RBBR (Table 4). The F-value for CR was found to be 43.07 (p-value < 0.0001), whereas the F-value for COD was found to be 28.45 (pvalue of 0.0001) according to Table 4, revealing that the BBD model is statistically significant for CR and COD reduction [48]. Furthermore, the values of the coefficient of determination (R 2 )…”

Section: Bbd Model Analysismentioning

confidence: 89%

Cross-Linked Chitosan-Glyoxal/Kaolin Clay Composite: Parametric Optimization for Color Removal and COD Reduction of Remazol Brilliant Blue R Dye

et al. 2021

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Kaolin clay (KN) was employed as an inorganic filler to modify a cross-linked chitosan-glyoxal as Schiff's-based chitosan composite derivative (CTS-GLY). The resulting (CTS-GLY/KN) was found to be a promising composite synthetic biopolymer that can be potentially utilized for color removal as well as COD reduction of an industrial anionic dye (remazol brilliant blue R, RBBR). The surface porosity, crystallinity, morphology, functionality, charge, and amine content of the CTS-GLY/KN were studied using BET, XRD, SEM, FTIR, pHpzc and pH-potentiometric titration analyses, respectively. Response surface methodology-Box-Behnken design (RSM-BBD) was used to optimize the impact of the main input factors on the color removal and COD reduction of RBBR. The adsorptive performance CTS-GLY/KN towards RBBR was well-defined by both Langmuir and Freundlich isotherm models with highest adsorption capacity of 447.1 mg/g at 30 ˚C. This finding reveals that CTS-GLY/KN can be utilized as a promising, feasible, and environmentally friendly composite-biosorbent for color removal and COD reduction of textile dyes from aqueous medium.

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Section: Bbd Model Analysismentioning

confidence: 89%

Cross-Linked Chitosan-Glyoxal/Kaolin Clay Composite: Parametric Optimization for Color Removal and COD Reduction of Remazol Brilliant Blue R Dye

et al. 2021

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“…In this process, terms A, B, C, D, AB, AC, A 2 , and C 2 are effective parameters. Model terms with P values less than 0.0500 are significant [45]. A, B, C, D, AB, AC, A 2 , and C 2 are significant model terms in this case.…”

Section: Response Surface Methodology (Rsm)mentioning

confidence: 67%

“…This diagram depicts how the errors are distributed. The discrepancy between the actual and expected values of The effect of solid adsorbents in Triethanolamine (TEA) solution… the responses by the model is called an error [45]. Figure 3b shows the correlation between the actual and predicted values, which, as it turns out, are close to each other, and there is a good correlation between the results.…”

Section: Response Surface Methodology (Rsm)mentioning

confidence: 70%

“…The model reduction can improve the model if there are many nominal model terms (not counting those needed to backing hierarchy). The F value of 3.15 for the lack of fit indicates that the lack of fit is not significant compared to the pure error [45]. There is a 10.85 percent risk that a significant "Lack of Fit F value" is caused by noise [41].…”

Section: Response Surface Methodology (Rsm)mentioning

confidence: 99%

“…Since operating conditions can be linked to changes, the nonlinear second-order model can describe them. Equation 14is a quadratic regression model that can be considered [44,45]. y is the process response, i and j are the factor index numbers, and Xi and Xj are the design variables.…”

Section: Rsm Modelingmentioning

confidence: 99%

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The effect of solid adsorbents in Triethanolamine (TEA) solution for enhanced CO2 absorption rate

2021

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This study aimed to investigate CO 2 absorption using chemical solvent of amine H 2 O-TEA-CO 2 in presence of activated carbon (AC) particles. The studied experimental range includes the temperature in range of 293-333 K, pressure in range of 3.5-9.5 bar, the concentration of solvents in range of 2.5-8.5 wt%, and amount of activated carbon in range of 0.3-0.9 kg/m 3 . The central composite design (CCD) with four parameters of temperature, pressure, amine concentration, and active carbon was applied in 5 levels. The physical solubility CO 2 in amine solutions decreases with the increasing temperature that indicates the process is exothermic. The optimal values of temperature, pressure, concentration, and active carbon are 303.0 K, 8.00 bar, 7.00 M, 0.75 g, respectively, and 25.99% for the input variables and desirability index of 0.732. The CO 2 loading, absorption capacity, and absorption percentage are obtained in the range of 0.572-1.180 mol CO2 /mol TEA , 0.208-0.506 wt%, and 12.73-32.61% in Triethanolamine (TEA) solutions in activated carbon, respectively. All dependent variables had a p value of less than 0.05, indicating that models were significant and substantial. The result showed that the addition of solid particles to chemical solvents effectively enhances CO 2 absorption.

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Population Balance Modeling and Multi‐Response Optimization of a Swirling‐Flow Nanobubble Generator

2022

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A novel model is proposed to optimize a swirling‐flow nanobubble generator utilizing a combined model of computational fluid dynamics‐population balance method (CFD‐PBM) coupled model and response surface method (RSM). The CFD‐PBM coupled model was validated by experiments based on the bubble size distribution and mass transfer. The validated model was utilized as an input for optimization using RSM. Optimization involved three factors and four target responses obtained by applying a central composite design (CCD). The adequacy of the models was evaluated by analysis of variance. Based on the optimization results, the proposed model can produce an optimized and feasible solution as a reference in the design of a nanobubble generator and can be applied further on a larger scale.

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Exploiting response surface methodology for experimental modeling and optimization of CO2 adsorption onto NaOH-modified nanoclay montmorillonite

Cited by 52 publications

References 43 publications

Cross-Linked Chitosan-Glyoxal/Kaolin Clay Composite: Parametric Optimization for Color Removal and COD Reduction of Remazol Brilliant Blue R Dye

Cross-Linked Chitosan-Glyoxal/Kaolin Clay Composite: Parametric Optimization for Color Removal and COD Reduction of Remazol Brilliant Blue R Dye

The effect of solid adsorbents in Triethanolamine (TEA) solution for enhanced CO2 absorption rate

Population Balance Modeling and Multi‐Response Optimization of a Swirling‐Flow Nanobubble Generator

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