Removal of methylene blue dye using biodegradable hydrogel and reusing in a secondary adsorption process

2014 ◽  
Vol 54 (10) ◽  
pp. 2765-2776 ◽  
Author(s):  
Ghada A. Mahmoud ◽  
Sahera F. Mohamed ◽  
Hala M. Hassan
Keyword(s):  
Methylene Blue ◽  
Adsorption Process ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Biodegradable Hydrogel

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.

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

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. 

KINETIC AND THERMODYNAMIC ADSORPTION STUDIES OF METHYLENE BLUE ONTO ZEOLITE FROM AQUEOUS SOLUTION

2021 ◽  
Vol 5 (1) ◽  
pp. 27-36
Author(s):  
H. I. Adegoke ◽  
M. F. Audu ◽  
M. O. Bello ◽  
F. Olukolatimi
Keyword(s):  
Methylene Blue ◽  
Adsorption Isotherm ◽  
Adsorption Process ◽  
Sodium Aluminate ◽  
Sodium Metasilicate ◽  
Blue Dye ◽  
Standard Entropy ◽  
Order Kinetic ◽  
Methylene Blue Dye ◽  
Enthalpy Of Adsorption

Zeolite was synthesized via hydrothermal method from sodium metasilicate and sodium aluminate solutions. The prepared sample was characterized by Fourier transform infrared (FTIR) spectroscopy, Scanning electron microscopy (SEM) and X-ray diffraction (XRD).The adsorption of methylene blue dye onto zeolite was studied. The adsorption experiments were carried out in batches and the effect of parameters such as concentration, pH, adsorbent dosage, temperature and contact time were investigated. The experimental data were fitted into the Langmuir and Freundlich Adsorption Isotherm. The result was fitted into pseudo- first order and pseudo- second order kinetic models. The thermodynamic parameters were also evaluated. The results revealed that maximum adsorption of methylene blue dye was achieved at a concentration of 20 mg/L and pH of 8.9. The adsorption process followed a Langmuir adsorption isotherm model with a correlation coefficient value of 0.9911. The negative value of standard enthalpy of adsorption, ΔHo calculated as -9.4 kJmol-1 revealed the exothermic nature of the adsorption process, the negative value of standard entropy of adsorption, ΔSo evaluated as -20.6 Jmol-1K-1showed that no significant change occurs in the internal structures of zeolite during the adsorption process and the negative value of Gibbs free energy, ΔGo obtained as -3.28 kJmol-1indicated the spontaneity of the adsorption process

Study of kinetic and isotherm of methylene blue dye adsorption process by using sugarcane bagasse biochar

2018 ◽  
Author(s):  
K. S. A. Sohaimi ◽  
N. F. M. Hamidi ◽  
S. Z. H. S. Zuber ◽  
N. A. A. Halim ◽  
N. F. Zainudin ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Sugarcane Bagasse ◽  
Adsorption Process ◽  
Dye Adsorption ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Bagasse Biochar

scholarly journals Removal of Methylene Blue Dye using Carbon Derived from Bulb of Zephyranthes citrina: Adsorption and Kinetic Studies

2020 ◽  
Vol 32 (6) ◽  
pp. 1352-1360
Author(s):  
J. Prakash ◽  
S. Vedanayaki ◽  
K. Karthick
Keyword(s):  
Methylene Blue ◽  
Adsorption Process ◽  
Organic Dyes ◽  
Kinetic Studies ◽  
Batch Process ◽  
Blue Dye ◽  
Aqueous Sample ◽  
Order Kinetic ◽  
Methylene Blue Dye ◽  
First Order

The studies open up an innovative approach and investigate porous, efficient raw carbon from Zephyranthes citrina bulb, which was used as an adsorbent to remove organic dyes. The well-dried and finely powdered Zephyranthes citrina bulb was carbonized at 900 ºC. The carbonized crude Z. citrina sample was characterized by FT-IR, UV-visible, scanning electron microscopy (SEM), BET, X-ray diffraction (XRD) techniques and their adsorption potential to remove the basic methylene blue dye from an aqueous sample. Adsorption studies comprise both adsorption isotherm and kinetic methods. The processes were carried out with diverse adsorbate concentrations and adsorbent quantities at various time intervals in the batch process. Kinetic models of Lagergren first order, pseudo-second order and intra particle diffusion were used to assess the kinetics and adsorption mechanism. The results revealed that the adsorption process follows the first order kinetic model of Lagergren. The BET isotherm model confirmed that it has an excellent adsorption capacity in an adsorption process. Based on the results obtained, the maximum removal (81%) of dye was achieved in a solution containing 50 mg of 50 mL dye at 3 h for methylene blue. The results indicated that the bulb of Zephyranthes citrina carbon is a proficient adsorption material and is also used as a cost effective alternative that can adsorb dye from an aqueous solution without activation treatment.

scholarly journals Removal of Methylene Blue from Aqueous Solution By Polydopamine@Zeolitic Imidazolate-67

2021 ◽  
Author(s):  
Maryam Hajnajafi ◽  
A. Khorshidi ◽  
Ali Ghanadzadeh Gilani ◽  
Francis Verpoort
Keyword(s):  
Methylene Blue ◽  
Adsorption Mechanism ◽  
Adsorption Process ◽  
Low Cost ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Adsorption Efficiency ◽  
Surface Functional Groups ◽  
Zeolitic Imidazolate Framework ◽  
Structure Morphology

Abstract Herein, a facile and low-cost route was used to prepare Polydopamine@Zeolitic Imidazolate Framework-67 (PDA@ZIF-67). The structure, morphology, surface functional groups and particle size distribution of PDA@ZIF-67 were studied using FTIR, FESEM, EDS, and BET analyses. The specific surface area and diameter of ​​PDA@ZIF-67 were equal to be 78.203 m2/g and 4.179 mm, respectively. The PDA@ZIF-67 was used as an adsorbent for the adsorption of methylene blue dye. The results show that the maximum adsorption efficiency of methylene blue on the surface of PDA@ZIF-67 is achieved at pH 2, the temperature of 65°C, 10 mg of adsorbent, and methylene blue concentration of 7.5 ppm.Moreover, the adsorption process's isothermal, thermodynamic, and kinetics were studied entirely to consider the adsorption mechanism. The methylene blue molecules located in the fine pores of the PDA@ZIF-67 adsorbent determine the adsorption rate. Moreover, the adsorption process of methylene blue at high temperatures is a spontaneous and endothermic reaction. The adsorption efficiency of PDA@ZIF-67, after the recovery, reached 62.21%, which is an excellent advantage for using this adsorbent.

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 Kinetic of Adsorption Process of Sulfonated Carbon-derived from Eichhornia crassipes in the Adsorption of Methylene Blue Dye from Aqueous Solution

2019 ◽  
Vol 14 (1) ◽  
pp. 17
Author(s):  
Mukhamad Nurhadi ◽  
Iis Intan Widiyowati ◽  
Wirhanuddin Wirhanuddin ◽  
Sheela Chandren
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Eichhornia Crassipes ◽  
Adsorption Process ◽  
Dye Adsorption ◽  
Nitrogen Adsorption ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Pseudo Second Order ◽  
Adsorption Desorption

The evaluation of kinetic adsorption process of sulfonated carbon-derived from Eichhornia crassipes in the adsorption of methylene blue dye from aqueous solution has been carried out. The sulfonated carbon-derived from E. crassipes (EGS-600) was prepared by carbonation of E. crassipes powder at 600 °C for 1 h, followed by sulfonation with concentrated sulfuric acid for 3 h. The physical properties of the adsorbents were characterized by using Fourier transform infrared spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and nitrogen adsorption-desorption studies. Adsorption study using methylene blue dye was carried out by varying the contact time and initial dye concentration for investigated kinetics adsorption models. The effect of varying temperature was used to determine the thermodynamic parameter value of ΔG, ΔH, and ΔS. The results showed that the equilibrium adsorption capacity was 98% when EGS-600 is used as an adsorbent. The methylene blue dye adsorption onto adsorbent takes place spontaneity and follows a pseudo-second-order adsorption kinetic model. Copyright © 2019 BCREC Group. All rights reservedReceived: 20th April 2018; Revised: 28th August 2018; Accepted: 4th September 2018; Available online: 25th January 2019; Published regularly: April 2019How to Cite: Nurhadi, M., Widiyowati, I.I., Wirhanuddina, W., Chandren, S. (2019). Kinetic of Adsorption Process of Sulfonated Carbon-derived from Eichhornia crassipes in the Adsorption of Methylene Blue Dye from Aqueous Solution. Bulletin of Chemical Reaction Engineering & Catalysis, 14 (1): 17-27 (doi:10.9767/bcrec.14.1.2548.17-27)Permalink/DOI: https://doi.org/10.9767/bcrec.14.1.2548.17-27 

scholarly journals Activated Graphene Oxide-Calcium Alginate Beads for Adsorption of Methylene Blue and Pharmaceuticals

2020 ◽  
Author(s):  
Burcu Gunes ◽  
Yannick Jaquet ◽  
Laura Sánchez ◽  
Rebeca Pumarino ◽  
Declan McGlade ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Graphene Oxide ◽  
Calcium Alginate ◽  
Adsorption Process ◽  
Alginate Beads ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Adsorption Capacities ◽  
Delta G ◽  
Adsorbent Dose

The remarkable adsorption capacity of graphene derived materials has prompted their examination in composite materials suitable for deployment in treatment of contaminated waters. In this study, crosslinked calcium alginate – graphene oxide beads were prepared and activated by exposure to pH 4 by using 0.1M HCl. The activated beads were investigated as novel adsorbents for the removal of organic pollutants (Methylene Blue dye and the pharmaceuticals Famotidine and Diclofenac) with a range of physicochemical properties. Effects of initial pollutant concentration, temperature, pH and adsorbent dose were investigated and kinetic models were examined for fit to the data. Maximum adsorption capacities qmax obtained were 1334, 35.50 and 36.35 mg g-1 for the uptake of Methylene blue, Famotidine and Diclofenac respectively. The equilibrium adsorption had an alignment with Langmuir isotherms while the kinetics were most accurately modelled using a pseudo- first –order and second order models according to the regression analysis. Thermodynamic parameters such as ΔG◦, ΔH◦ and ΔS◦ were calculated and the adsorption process was determined to be exothermic and spontaneous.

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