scholarly journals Evaluation of the efficiency adsorption process with Zeolite@ in the removal of methylene blue dye from aqueous solutions

2021 ◽  
Author(s):  
Negar Einollahzadeh ◽  
Mehdi Vosoughi
Keyword(s):  
Methylene Blue ◽  
Reaction Time ◽  
Adsorption Kinetics ◽  
Adsorption Process ◽  
Complex Structure ◽  
Isotherm Models ◽  
Blue Dye ◽  
Maximum Adsorption Capacity ◽  
Methylene Blue Dye ◽  
Optimal Conditions

Introduction: Dyes are materials with a complex structure that enter the environment from textile process such as dyeing and washing. The aim of this study was to investigate the efficiency of the absorption process along with adsorption using by Zeolite @ ZnO in the removing methylene blue dye from textile wastewater. Methods: The structure and morphology of nanoparticles were examined using XRF, FTIR and FESEM techniques. Dye concentrations were determined using a spectrophotometer at 664 nm. In this study, the variables of reaction time, solution pH, adsorbent amount and dye concentration were evaluated. To determine the isotherm and adsorption kinetics, two isotherm models of Langmuir and Freundlich and two kinetics models pseudo-first order pseudo-second order were used. Results: We found that optimal conditions were concentration of 50 mg/l, adsorbent dose of 1 g/l, pH of 11 and a reaction time of 60 minutes.  The removal efficiency under optimal conditions for methylene blue was 95.8%. Conclusion: The results of the isotherm and adsorption kinetics study for methylene blue showed that the adsorption process follows the Langmuir isotherm and quasi-quadratic kinetics. The maximum adsorption capacity of the adsorbent was determined 384 mg/g using the Langmuir model.

scholarly journals Study of Kinetics and Adsorption Isotherm of Methylene Blue Dye using Tannin Gel from Ceriops tagal

2020 ◽  
Vol 23 (10) ◽  
pp. 370-376
Author(s):  
Thamrin Azis ◽  
La Ode Ahmad ◽  
Keke Awaliyah ◽  
Laode Abdul Kadir
Keyword(s):  
Methylene Blue ◽  
Adsorption Capacity ◽  
Adsorption Kinetics ◽  
Contact Time ◽  
Adsorption Process ◽  
Blue Dye ◽  
Maximum Adsorption Capacity ◽  
Methylene Blue Dye ◽  
Ceriops Tagal ◽  
Kinetics Of

Research on the equilibrium and adsorption kinetics of methylene blue dye using tannin gel from the Tingi tree (Ceriops tagal) has been carried out. This study aims to determine the capacity and adsorption kinetics of tannin gel against methylene blue dye. Several parameters, such as the effect of contact time, pH, and methylene blue dye concentration on adsorption, were also studied. Based on the research results, the optimum adsorption process is a contact time of 30 minutes and a pH of 7. The adsorption capacity increased to a concentration of 80 mg/L with a maximum adsorption capacity (qm) of 49.261 mg/g. The adsorption process follows the pseudo-second-order adsorption kinetics model and the Langmuir isotherm model.

scholarly journals Characterization and application of orange peel as an adsorbent for cationic dye removal from aqueous solution

2021 ◽  
Vol 25 ◽  
pp. e16
Author(s):  
Aline Haas ◽  
Eliane Pereira dos Santos
Keyword(s):  
Methylene Blue ◽  
Dye Removal ◽  
Adsorption Process ◽  
Solid Medium ◽  
Orange Peel ◽  
Freundlich Isotherm ◽  
Adsorptive Capacity ◽  
Blue Dye ◽  
Maximum Adsorption Capacity ◽  
Methylene Blue Dye

 With the great generation of colored effluents, several methods for the removal of the color are used, being one of them the method of adsorption in solid medium. In this paper, the in natura orange peel was used as the alternative biomass for the adsorption process of methylene blue, which was characterized by moisture content, pH, apparent density, iodine number, and methylene blue index. To determine the adsorptive capacity of the methylene blue dye, pH 7 was obtained as favorable, the adsorption process showed an adsorption of 82% of the methylene blue dye and a 10 min equilibrium time, where the Freundlich isotherm presented a better adaptation to the adsorption process in orange peel, with its maximum adsorption capacity of 3.9630 mg g-1, for the methylene blue dye. 

Preparation, characterization and adsorption kinetics of methylene blue dye in reduced-graphene oxide supported nanoadsorbents

2020 ◽  
Vol 309 ◽  
pp. 113171 ◽  
Author(s):  
Mehmet Harbi Calimli ◽  
Mehmet Salih Nas ◽  
Hakan Burhan ◽  
Sibel Demiroglu Mustafov ◽  
Özkan Demirbas ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Adsorption Kinetics ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Reduced Graphene ◽  
Kinetics Of

Use of chabazite, a naturally abundant zeolite, for the investigation of the adsorption kinetics and mechanism of methylene blue dye

2016 ◽  
Vol 235 ◽  
pp. 78-86 ◽  
Author(s):  
Hamza Aysan ◽  
Serpil Edebali ◽  
Celalettin Ozdemir ◽  
Muazzez Celi̇k Karakaya ◽  
Necati Karakaya
Keyword(s):  
Methylene Blue ◽  
Adsorption Kinetics ◽  
Kinetics And Mechanism ◽  
Blue Dye ◽  
Methylene Blue Dye

scholarly journals Orthophosphoric Acid Activated Babul Seed Carbon as an Adsorbent for the Removal of Methylene Blue

2008 ◽  
Vol 5 (4) ◽  
pp. 742-753 ◽  
Author(s):  
M. Sujatha ◽  
A. Geetha ◽  
P. Sivakumar ◽  
P. N. Palanisamy
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Adsorption Kinetics ◽  
Orthophosphoric Acid ◽  
Chemical Activation ◽  
Bet Surface Area ◽  
Isotherm Models ◽  
Blue Dye ◽  
Equilibrium Data ◽  
Pseudo Second Order

An Experimental and theoretical study has been conducted on the adsorption of methylene blue dye using activated carbon prepared from babul seed by chemical activation with orthophosphoric acid. BET surface area of the activated carbon was determined as 1060 m2/g. Adsorption kinetics, equilibrium and thermodynamics were investigated as a function of initial dye concentration, temperature and pH. First order Lagergren, pseudo-second order and Elovich kinetic models were used to test the adsorption kinetics. Results were analyzed by the Langmuir, Freundlich and Temkin isotherm models. Based on regression coefficient, the equilibrium data found fitted well to the Langmuir equilibrium model than other models. The characteristics of the prepared activated carbon were found comparable to the commercial activated carbon. It is found that the babul seed activated carbon is very effective for the removal of colouring matter.

Evaluation of the Adsorption Process Using Low Cost Agroindustry Residue for the Removal of Methylene Blue Dye

2020 ◽  
Vol 12 (2) ◽  
Author(s):  
Fabiano Mendonça De Oliveira ◽  
Priscila Afonso Rodrigues de Sousa ◽  
Edmar Isaias De Melo ◽  
Luciana Melo Coelho
Keyword(s):  
Methylene Blue ◽  
Adsorption Process ◽  
Low Cost ◽  
Blue Dye ◽  
Methylene Blue Dye

Decolorization of Methylene Blue Dye Wastewater by Fenton’s Reagent

2011 ◽  
Vol 295-297 ◽  
pp. 1447-1450 ◽  
Author(s):  
Jun Tan Liu ◽  
Huan Gao ◽  
Shi Jing Liu
Keyword(s):  
Methylene Blue ◽  
Reaction Time ◽  
Inorganic Compounds ◽  
Good Effect ◽  
Blue Dye ◽  
Fenton’S Reagent ◽  
Methylene Blue Dye ◽  
Dye Wastewater ◽  
Fenton's Reagent ◽  
Initial Ph

Using ·OH from Fenton’s reagent, the strong oxidation treatment of methylene blue dye wastewater can destruct the chromophore in organic compounds, and yield CO2, H2O and small molecule inorganic compounds by oxidative degradation finally. The influence of Fenton's reagent dosage, initial pH, and reaction time on the degradation effect was studied. The experimental results show that the decolorization rate of 100mL 20mg/L methylene blue dye wastewater can achieve 96% in the conditions of 0.02g FeSO4·7H2O, 1mL 30% H2O2, initial pH at 3.0 ~4.0, reaction time is 30 min, at room temperature. This treatment of dye wastewater is easy to operate and with good effect.

scholarly journals Adsorption and Kinetic Study of Methylene Blue dye on New Surface Derived from Copolymer (Melamine – Formaldehyde – Para- methyl Anisole)

2018 ◽  
Vol 12 (1) ◽  
pp. 178-187
Author(s):  
Baghdad Science Journal
Keyword(s):  
Methylene Blue ◽  
Kinetic Parameters ◽  
Kinetic Models ◽  
Exchange Property ◽  
Blue Dye ◽  
Maximum Adsorption Capacity ◽  
Methylene Blue Dye ◽  
Free Energy Of Adsorption ◽  
Wide Range ◽  
Different Temperatures

A new copolymer (MFA) was prepared from condensation of melamine (M) with p- methyl – anisole (A) in the presence of condensation agent like 37% (w/v) of formaldehyde. The new copolymer was characterized by elemental, IR and HNMR spectra. The chelating ion-exchange property of this polymer was studied for methylene blue dye in aqueous solution in 100-200ppm concentrations. The adsorption study was carried out over a wide range of pH, shaking time and in media of various kinetic parameters models. Thermal parameters like enthalpy, entropy and Gibbs free energy of adsorption process of methylene blue on surface of MFA resin were determined on the basis of kinetic parameters at different temperatures. To describe the equilibrium of adsorption, the Langmuir, Freundlich and Temkin isotherms were used. The Langmuir isotherm correlation (R2=0.987) was the best fitted for experimental data with maximum adsorption capacity of 200 ppm. A higher correlation value of the kinetic's model was observed close to pseudo first order, second order and Temkin kinetic models values of correlation R2 lie in the range (0.983-0.987) in comparing to other kinetic models.

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