Desirability and Design of Experiments Applied to the Optimization of the Reduction of Decarburization of the Process Heat Treatment for Steel Wire Sae 51B35

Pimenta, Cristie Diego; Silva, Messias Borges; Campos, Rose Lima de Morais; Campos, Walfredo Ribeiro de

doi:10.11648/j.ajtas.20180701.15

Cited by 18 publications

(9 citation statements)

References 3 publications

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“…The ANOVA provides a statistical procedure that determines whether the means of several groups are equal or not. The Fisher's variance ratio, F-value, is used to test the significance of the model, individual variables, and their interactions [53,54]. Mean square (MSS) is the sum of squares divided by the degrees of freedom, for each source.…”

Section: Anovamentioning

confidence: 99%

Application of Response Surface Methodology for Preparation of ZnAC2/CAC Adsorbents for Hydrogen Sulfide (H2S) Capture

et al. 2021

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Hydrogen sulfide (H2S) should be removed in the early stage of biogas purification as it may affect biogas production and cause environmental and catalyst toxicity. The adsorption of H2S gas by using activated carbon as a catalyst has been explored as a possible technology to remove H2S in the biogas industry. In this study, we investigated the optimal catalytic preparation conditions of the H2S adsorbent by using the RSM methodology and the Box–Behnken experimental design. The H2S catalyst was synthesized by impregnating commercial activated carbon (CAC) with zinc acetate (ZnAc2) with the factors and level for the Box–Behnken Design (BBD): molarity of 0.2–1.0 M ZnAc2 solution, soaked temperature of 30–100 °C, and soaked time of 30–180 min. Two responses including the H2S adsorption capacity and the BET surface area were assessed using two-factor interaction (2FI) models. The interactions were examined by using the analysis of variance (ANOVA). Hence, the optimum point of molarity was 0.22 M ZnAc2 solution, the soaked period was 48.82 min, and the soaked temperature was 95.08 °C obtained from the optimum point with the highest H2S adsorption capacity (2.37 mg H2S/g) and the optimum BET surface area (620.55 m2/g). Additionally, the comparison of the optimized and the non-optimized catalytic adsorbents showed an enhancement in the H2S adsorption capacity of up to 33%.

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Section: Anovamentioning

confidence: 99%

Application of Response Surface Methodology for Preparation of ZnAC2/CAC Adsorbents for Hydrogen Sulfide (H2S) Capture

et al. 2021

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“…Under the determined optimum conditions, the maximum adsorption capacity of methylene blue was found as 43.84 mg/g. The desirability [37] of these parameters, which completely represents the desired or ideal response values, was found to be 0.999 for methylene blue adsorption. For optimum point evaluation, validation experiments were performed for optimum process conditions corresponding to 10 different desirability levels among different desirability levels recommended by the package program and under these conditions, the maximum adsorption capacity for methylene blue was obtained as 42.95 mg/g.…”

Section: Optimization Of Process Parameters For Methylene Blue Adsorptionmentioning

confidence: 96%

Optimization of Process Conditions for Adsorption of Methylene Blue on Formaldehyde-Modified Peanut Shells Using Box-Behnken Experimental Design and Response Surface Methodology

Kutluay¹,

Baytar²,

Şahi̇n³

et al. 2020

European Journal of Technic

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This paper presents the use of formaldehyde-modified peanut shells as bioadsorbent for the adsorption of methylene blue for the first time. Firstly, the effect of medium pH, which is one of the important parameters for the adsorption process, was determined. Then, the adsorption process conditions such as adsorption time (30-150 min), initial concentration (50-200 ppm) and ambient temperature (25-40°C) were optimized by using response surface methodology (RSM) based on Box-Behnken experimental design. The pseudofirst-order and pseudo-second-order kinetic models were used to evaluate the adsorption kinetic in this study under optimized process conditions. The maximum adsorption capacity was found under optimum process conditions; 92.25 min adsorption time, 191.87 ppm initial concentration, 39.70°C adsorption temperature. The maximum adsorption capacity for methylene blue was determined to be 43.84 mg/g using RSM based on Box-Behnken experimental design. Adsorption kinetic results showed that the plots of the pseudo-second-order kinetic model were fit the experimental data better when compared to the pseudo-first-order model. Besides, results indicated that formaldehyde-modified peanut shells could be used as low-cost and effective bioadsorbent for the adsorption of methylene blue, which is one of the important dyes. Furthermore, it was concluded that the RSM based on Box-Behnken experimental design can be applied successfully for the methylene adsorption process.

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“…Desirability function analysis is a statistical technique used for multi-objective optimization where the objective is to ensure that all the quality characteristics are between 0 and 1 [28]. The individual desirability is, in turn, converted into composite desirability which is calculated from the combination of each response variable processed through a geometric mean of each pair of the response variables [29]. The highest value of the composite desirability is selected as the optimum parameter settings that produce the most desirable quality characteristics under consideration.…”

Section: Multi-objective Optimizationmentioning

confidence: 99%

Machinability Studies and Optimization of AA 6082/Fly Ash/Carbonized Eggshell Matrix Composite

Ononiwu¹,

Ozoegwu²,

Madushele³

et al. 2021

RCMA

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Machinability studies of aluminium matrix composites (AMCs) is a necessary investigation required to understand their behaviour during machining to produce components effectively and efficiently. This established need has led to the investigation into the machinability of AA 6082 reinforced with 2.5 wt.% fly ash and 2.5 wt.% carbonized eggshell fabricated via stir casting. The studied machinability indices were material removal rate (MRR), cutting temperature, built-up edges (BUE) formation and chip morphology while the selected inputs were cutting speed (100 mm/min, 200 mm/min, 300 mm/min), feed (0.1 mm/rev, 0.2 mm/rev, 0.3 mm/rev) and depth of cut (0.5 mm, 1 mm, 1.5 mm). For the experimental design, the L9 orthogonal array was preferred to create 9 experimental runs. The analysis of the built-up edges showed that it increased at lower cutting speeds and increased feed and depth of cut. The examination of the produced chips after each experimental run showed the presence of c-shaped, helically shaped and ribbon-shaped chips. The analysis of variance (ANOVA) for both MRR and cutting temperature indicated that the depth of cut was the most influential factor on both responses. Multi-objective optimization using desirability function analysis showed that the optimum combination of parameters was 300 mm/min, 0.2 mm/rev and 1.0 mm for the cutting speed, feed and depth of cut respectively. The ANOVA of the composite desirability indicated that the cutting speed was the most contributing factor.

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Desirability and Design of Experiments Applied to the Optimization of the Reduction of Decarburization of the Process Heat Treatment for Steel Wire Sae 51B35

Cited by 18 publications

References 3 publications

Application of Response Surface Methodology for Preparation of ZnAC2/CAC Adsorbents for Hydrogen Sulfide (H2S) Capture

Application of Response Surface Methodology for Preparation of ZnAC2/CAC Adsorbents for Hydrogen Sulfide (H2S) Capture

Optimization of Process Conditions for Adsorption of Methylene Blue on Formaldehyde-Modified Peanut Shells Using Box-Behnken Experimental Design and Response Surface Methodology

Machinability Studies and Optimization of AA 6082/Fly Ash/Carbonized Eggshell Matrix Composite

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