Optimization of process variables by the application of response surface methodology for dye removal using a novel adsorbent

Ravikumar, K.; Krishnan, Santhana; Ramalingam, Subramanian; Balu, K.

doi:10.1016/j.dyepig.2005.07.018

Cited by 226 publications

(117 citation statements)

References 22 publications

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“…Design of experiments (DOE) and response surface methodology (RSM) is largely used for modeling mechanism parameters, especially in adsorption or removal process [19][20][21][22][23][24][25][26][27][28][29][30][31][32]. Because RSM contains a lower number of experiments, it is flaws over conventional methods available.…”

Section: Introductionmentioning

confidence: 99%

Response Surface Methodology for Adsorption of Fluoride Ion Using Nanoparticle of Zero Valent Iron from Aqueous Solution

Fakhri¹

2013

J Chem Eng Process Technol

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This study is removal of fluoride ion from aqueous solution by nano zero valent iron (nZVI). Effects of the factor variables (temperature, nZVI dose and pH) and their interactions on adsorption of fluoride ion were investigated by response surface methodology (RSM) based on Box-Behnken design (BBD). Optimized values of temperature, nZVI dose and pH for fluoride sorption were found as 313K, 0.5 g, and 4, respectively. The effect of initial fluoride concentration on the adsorption amount was investigated by a batch experiment. For study the fluoride removal mechanism, various adsorption isotherms such as Langmuir, Freundlich and Temkin were fitted. The results showed that the Freundlich isotherm gave high fit for fluoride adsorption. The time of adsorption reaction was rapid and subordinated pseudo-second-order kinetics. The values of thermodynamic parameters indicated that adsorption was spontaneous and endothermic in nature. The nano zero valent iron (nZVI) could be used as a potential adsorbent for fluoride ion containing aqueous solution.

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Section: Introductionmentioning

confidence: 99%

Response Surface Methodology for Adsorption of Fluoride Ion Using Nanoparticle of Zero Valent Iron from Aqueous Solution

Fakhri¹

2013

J Chem Eng Process Technol

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“…27 The higher the significance, the better the degree of correlation between the observed and predicted values. 28 Total extract concentration, incubation days and temperature content were significantly affected.…”

Section: Optimization Of Fermentation Mediummentioning

confidence: 99%

Effect of Aqueous Extract of Rhazyastricta Decne on Citrinin Production and Fungal Biomass by Pencillium notatum and Optimization of Experimental Design Using Response Surface Methodology

Zargar¹

2016

Biosci., Biotech. Res. Asia

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Citrinin (Mycotoxin) is hepato and nephrotoxic agent produced by several species of microorganisms like Aspergillus, Penicilliumand Monascus. Citrinin is generally found in stored grains and is mainly found after their harvest. The aim of the present research was to study and optimize the conditions for maximum inhibition of citrinin and fungal biomass by using aqueous leaf extract of Rhazyastricta Decne under laboratory conditions by Pencillium notatum. Optimization of culture conditions was carried out using Box-Behnken method of response surface methodology. Extent of inhibition of citrinin was carried out using HPLC and reduction in fungal biomass was carried out using dry cell weight after comparing with controls. Optimized culture conditions for inhibition as per the point prediction tool were found to be 13.16 (mg/L) for concentration of extract of Rhazyastricta Decne, 10 days of incubation period and temperature of 25 °C for growth of Pencillium notatum. These optimized values of tested parameters were compared with control citrinin production (286 mg/L) and dry cell weight production (408.65 mg). An average of 80.67±0.75% inhibition of citrinin and 81.65±2.56% of dry cell weight was obtained in an optimized medium at 10 th d of fermentation with 98.41 % and 94.37% validity, respectively.

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“…A 2 3 full-factorial design with four centre point runs leading to 12 experimental runs were performed ( Table 2). The centre point replicates were chosen to verify any change in the estimation procedure and as a measure of the precision property (Ravikumar et al, 2007). For statistical …”

Section: Statistical Design Of Experimentsmentioning

confidence: 99%

Cobalt removal from wastewater using pine sawdust

Musapatika

Singh

Moodley

et al. 2012

Afr. J. Biotechnol.

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Agricultural wastes can cause environmental problems if not well managed, but there is a lot of potential to use these wastes as raw material in other processes. In this investigation, pine sawdust was evaluated as an adsorbent in the treatment of wastewater containing cobalt ions. A two-level threefactor full-factorial experimental design with centre points was used to study the interactive effect of the operating parameters in order to achieve the best conditions for the batch adsorption of cobalt ions. A response surface analysis was also conducted to further understand the interactions amongst the factors such as adsorbent dose, solution pH and initial concentration. In addition, adsorption isotherms, namely the Freundlich and Langmuir, were used to characterize the removal of cobalt from the wastewater. It was observed that the combined effect of low adsorbent dose, high pH and high initial concentration of wastewater resulted in the highest adsorption capacity. The Freundlich isotherm provided a better fit to the experimental data than the Langmuir isotherm. Moreover, pine sawdust showed adsorption capabilities for cobalt, and hence it could be an option in the quest to use waste to treat wastewater.

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Optimization of process variables by the application of response surface methodology for dye removal using a novel adsorbent

Cited by 226 publications

References 22 publications

Response Surface Methodology for Adsorption of Fluoride Ion Using Nanoparticle of Zero Valent Iron from Aqueous Solution

Response Surface Methodology for Adsorption of Fluoride Ion Using Nanoparticle of Zero Valent Iron from Aqueous Solution

Effect of Aqueous Extract of Rhazyastricta Decne on Citrinin Production and Fungal Biomass by Pencillium notatum and Optimization of Experimental Design Using Response Surface Methodology

Cobalt removal from wastewater using pine sawdust

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