Optimization of cellulose and sugarcane bagasse oxidation: Application for adsorptive removal of crystal violet and auramine-O from aqueous solution

2017 ◽  
Vol 494 ◽  
pp. 223-241 ◽  
Author(s):  
Luide Rodrigo Martins ◽  
Josilene Aparecida Vieira Rodrigues ◽  
Oscar Fernando Herrera Adarme ◽  
Tânia Márcia Sacramento Melo ◽  
Leandro Vinícius Alves Gurgel ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Sugarcane Bagasse ◽  
Crystal Violet ◽  
Adsorptive Removal ◽  
Auramine O

scholarly journals Application of a new carboxylate-functionalized sugarcane bagasse for adsorptive removal of crystal violet from aqueous solution: Kinetic, equilibrium and thermodynamic studies

2015 ◽  
Vol 65 ◽  
pp. 521-534 ◽  
Author(s):  
Bruno Christiano Silva Ferreira ◽  
Filipe Simões Teodoro ◽  
Aparecida Barbosa Mageste ◽  
Laurent Frédéric Gil ◽  
Rossimiriam Pereira de Freitas ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Sugarcane Bagasse ◽  
Crystal Violet ◽  
Thermodynamic Studies ◽  
Adsorptive Removal ◽  
Solution Kinetic ◽  
Kinetic Equilibrium

scholarly journals Adsorption of crystal violet from aqueous solution onto sugarcane bagasse: central composite design for optimization of process variables

2012 ◽  
Vol 2 (1) ◽  
pp. 55-65 ◽  
Author(s):  
Sagnik Chakraborty ◽  
Shamik Chowdhury ◽  
Papita Das Saha
Keyword(s):  
Aqueous Solution ◽  
Central Composite Design ◽  
Sugarcane Bagasse ◽  
Crystal Violet ◽  
Agitation Speed ◽  
Initial Solution ◽  
Optimum Conditions ◽  
Solution Ph ◽  
Central Composite ◽  
Adsorbent Dose

The adsorption of crystal violet (CV) from aqueous solution by sugarcane bagasse (SCB), an agro-industrial residue, was investigated in a batch experimental setup. A two level four factor (24) full factorial central composite design (CCD) with the help of Design Expert Version 7.1.6 (Stat-Ease, USA) was used for adsorption process optimization and evaluation of interaction effects of different operating parameters: agitation speed (80–180 rpm), initial solution pH (4.0–8.0), initial dye concentration (100–200 mg L–1), and adsorbent dose (2–5 g L–1). A multiple coefficient of determination (R2) value of 0.98, model F value of 266.36 and its low P-value (<0.0001) along with lower value of coefficient of variation (2.70%) indicated the fitness of the response surface quadratic model developed during the present study. Numerical optimization applying desirability function was used to identify the optimum conditions for maximum removal of CV. The optimum conditions were found to be agitation speed = 165 rpm, initial solution pH = 8.0, initial dye concentration = 200 mg L–1 and adsorbent dose = 2.0 g L–1. A confirmatory experiment was performed to evaluate the accuracy of the optimization procedure and maximum CV removal of 93.21% was achieved under the optimized conditions.

Characterization and Utilization of Corncob Lignocellulose for Adsorptive Removal of Basic Dyes from Aqueous Solution

2011 ◽  
Vol 236-238 ◽  
pp. 125-129
Author(s):  
Run Fang ◽  
Xian Su Cheng
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Crystal Violet ◽  
Dye Uptake ◽  
Batch Experiments ◽  
Solution Ph ◽  
Adsorptive Removal ◽  
Decolorization Efficiency ◽  
Basic Dyes ◽  
Uptake Process

This study evaluated the potential application of a biomass material, corncob lignocellulose (CL), as a novel adsorbent for the removal of basic dyes from aqueous solutions. The adsorption behavior and mechanism of basic dyes on CL was investigated via batch experiments. Both adsorption and desorption studies showed that the attachment of basic dyes onto CL was ascribed to a combined interaction involving electrostatic attraction and chemisorption. The decolorization efficiency of CL increased with increasing solution pH and temperature. Thermodynamic parameters demonstrated the spontaneous and endothermic nature of the adsorption. The dye uptake process was best described by the Langmuir isotherm. The adsorption capacity of CL for Methylene blue, Crystal Violet and Malachite Green at 30°C was calculated to be 145.8, 121.8 and 65.7 mg/g, respectively.

Preparation of Corncob-Based Bio-Char and its Application in Removing Basic Dyes from Aqueous Solution

2012 ◽  
Vol 550-553 ◽  
pp. 2420-2423 ◽  
Author(s):  
Run Fang
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Crystal Violet ◽  
Dye Removal ◽  
Adsorption Efficiency ◽  
Batch Experiments ◽  
Basic Fuchsin ◽  
Solution Ph ◽  
Adsorptive Removal ◽  
Basic Dyes

This study presents the preparation of corncob-based bio-char and its application in adsorptive removal of three basic dyes (methylene blue, crystal violet and basic fuchsin) from aqueous solution. The adsorption behavior of basic dyes on bio-char was investigated via batch experiments. Experimental results showed that the adsorption efficiency of bio-char increased with increasing solution pH and temperature. Thermodynamic parameters demonstrated the spontaneous and endothermic nature of the adsorption. The dye removal process fitted the Langmuir isotherm well. The adsorption capacity of bio-char for methylene blue, crystal Violet and basic fuchsin at 25°C was calculated to be 126.58, 81.96 and 75.18 mg/g, respectively.

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