Optimized waste tea activated carbon for adsorption of Methylene Blue and Acid Blue 29 dyes using response surface methodology

Auta, M.; Hameed, B.H.

doi:10.1016/j.cej.2011.09.100

Cited by 238 publications

(95 citation statements)

References 34 publications

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“…Since AC is highly heterogeneous having many pores, multilayer adsorption may be possible due to physical interactions. Similar results are reported for the heterogeneous ACs where the Langmuir isotherm fitted the equilibrium data well (Auta and Hameed 2011;Ghaedi et al 2013). The positive values of B t obtained from the Temkin isotherm confirmed the endothermic nature of the dye adsorption.…”

Section: Adsorption Isothermsupporting

confidence: 74%

Adsorptive removal of reactive dyes from aqueous solution using activated carbon synthesized from waste biomass materials

Thitame

Shukla

2015

Int. J. Environ. Sci. Technol.

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High-activity mesoporous carbons were prepared from wild almond shells and coir pith by phosphoric acid activation and applied for adsorption of the dyes, C.I. Reactive Red 2 and C.I. Reactive Yellow 145A. The BET surface areas of these activated carbons were found to be 1133.25 and 1210.58 m 2 /g, respectively. The equilibrium data were best described by the Langmuir isotherm in all the cases. The maximum dye adsorption capacity shown by the activated carbon produced from coir pith was 2022.9 mg/g for C.I. Reactive Red 2 and 1694.3 mg/g for C.I. Reactive Yellow 145A at 60°C with initial concentration of 1000 mg/L. Pseudo-second-order kinetic model gave a good fit, with the intraparticle diffusion being one of the essential rate-controlling steps. Thermodynamic analysis revealed that the adsorption of both the dyes on activated carbons was spontaneous and endothermic in nature. The t test analysis showed that the difference between adsorption capacities of the produced activated carbons was not significant at 95 % confidence level at all the temperatures studied.

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Section: Adsorption Isothermsupporting

confidence: 74%

Adsorptive removal of reactive dyes from aqueous solution using activated carbon synthesized from waste biomass materials

Thitame

Shukla

2015

Int. J. Environ. Sci. Technol.

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“…The production of activated carbon from agricultural by-products has received much attention from the scientific community as they are renewable, low-cost and environmentally friendly materials (Okman et al 2014). A large number of agricultural by-products, such as date stone (Danish et al 2014b), Acacia mangium wood (Danish et al 2011), cocoa shell (Ahmad et al 2012), waste tea (Auta and Hameed 2011), coffee husks (Oliveira et al 2009), pomegranate wood (Ghaedi et al 2015), mahogany sawdust (Malik 2003), rice husk (Malik 2003), corn cob (Sych et al 2012), and other materials have been successfully used for the production of low-cost activated carbon.…”

Section: Page 2 Of 11mentioning

confidence: 99%

Optimization of banana trunk-activated carbon production for methylene blue-contaminated water treatment

et al. 2018

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This experiment was run to characterize the banana trunk-activated carbon through methylene blue dye adsorption property. The H 3 PO 4 chemical activating agent was used to produce activated carbons from the banana trunk. A small rotatable central composite design of response surface methodology was adopted to prepare chemically (H 3 PO 4 ) activated carbon from banana trunk. Three operating variables such as activation time (50-120 min), activation temperature (450-850 °C), and activating agent concentration (1.5-7.0 mol/L) play a significant role in the adsorption capacities (q) of activated carbons against methylene blue dye. The results implied that the maximum adsorption capacity of fixed dosage (4.0 g/L) banana trunk-activated carbon was achieved at the activation time of 51 min, the activation temperature of 774 °C, and H 3 PO 4 concentration of 5.09 mol/L. At optimum conditions of preparation, the obtained banana trunk-activated carbon has adsorption capacity 64.66 mg/g against methylene blue. Among the prepared activated carbons run number 3 (prepared with central values of the operating variables) was characterized through Fourier transform infrared spectroscopy, field emission scanning microscopy, and powder X-ray diffraction.

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“…In literature, RSM based on central composite design (CCD) has been used in different applications of engineering including heavy-metal removal, dye removal, biofuel production, etc. (Auta and Hameed, 2011;Betiku and Taiwo, 2015;Dora et al, 2013;Skorupskaite et al, 2015). However, this is the first study on the optimization of methyl orange (MO) adsorption on SBB.…”

Section: Introductionmentioning

confidence: 99%

“…The actual values of process variables and their variation limits were selected based on the values obtained in literatures (Auta and Hameed, 2011;Chatterjee et al, 2012;Pavan et al, 2007) and coded as shown in Table 1. As presented, the experimental design involved three parameters (X 1 , X 2 , and X 3 ), each at five levels, coded À1, À, 0, þ , and þ1, respectively.…”

Section: Experimentation and Optimization Of Adsorption Processmentioning

confidence: 99%

Application of response surface methodology for optimization of methyl orange adsorption by Fe-grafting sugar beet bagasse

Ghorbani

Kamari

2016

Adsorption Science & Technology

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The adsorptive removal of methyl orange dye using a sugar beet bagasse (SBB) as agro-industrial by-product has been investigated. The adsorption potential of SBB was improved by grafting with FeCl 3 Á6H 2 O. The dependency of removal efficiency (R) and adsorption capacity (q e ) on the level and magnitude of variables including initial pH, methyl orange concentrations, and sorbent dosage was investigated and optimized by central composite design under response surface methodology (RSM). Besides, the effect of temperature on adsorption process was evaluated in terms of thermodynamic study. The good agreement found between observed and predicted values supports and confirms the suitability of the applied model to predict adsorption state. The applied models revealed that methyl orange removal in aqueous solution was affected by all the three factors studied. By consideration of seven starting points in the response surface solutions, the best local maximum was found to be at initial solution pH 2.51, sorbent dosage of 0.37 g.L À1 , initial dye concentration of 100 mg.L À1 , removal efficiency of 51.8%, adsorption capacity of 221.5 mg.g À1 , and desirability of 0.692. A pseudo second-order model more accurately represented the adsorption process. Moreover, Freundlich isotherm model was superior to the Langmuir isotherm model.

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Optimized waste tea activated carbon for adsorption of Methylene Blue and Acid Blue 29 dyes using response surface methodology

Cited by 238 publications

References 34 publications

Adsorptive removal of reactive dyes from aqueous solution using activated carbon synthesized from waste biomass materials

Adsorptive removal of reactive dyes from aqueous solution using activated carbon synthesized from waste biomass materials

Optimization of banana trunk-activated carbon production for methylene blue-contaminated water treatment

Application of response surface methodology for optimization of methyl orange adsorption by Fe-grafting sugar beet bagasse

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