Applications of dye adsorption in fixed bed column and modeling studies

2021 ◽  
Vol 222 ◽  
pp. 209-218
Author(s):  
Muhammed Onay ◽  
Çiğdem Sarıcı Özdemir
Keyword(s):  
Fixed Bed ◽  
Dye Adsorption ◽  
Fixed Bed Column ◽  
Modeling Studies

scholarly journals Continuous Fixed-Bed Column Studies on Congo Red Dye Adsorption-Desorption Using Free and Immobilized Nelumbo nucifera Leaf Adsorbent

Polymers ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 54
Author(s):  
Vairavel Parimelazhagan ◽  
Gautham Jeppu ◽  
Nakul Rampal
Keyword(s):  
Congo Red ◽  
Agricultural Waste ◽  
Fixed Bed ◽  
Dye Adsorption ◽  
Nelumbo Nucifera ◽  
Substantial Contribution ◽  
Flow Mode ◽  
Waste Biomass ◽  
Column Studies ◽  
Fixed Bed Column

The adsorption of Congo red (CR), an azo dye, from aqueous solution using free and immobilized agricultural waste biomass of Nelumbo nucifera (lotus) has been studied separately in a continuous fixed-bed column operation. The N. nucifera leaf powder adsorbent was immobilized in various polymeric matrices and the maximum decolorization efficiency (83.64%) of CR occurred using the polymeric matrix sodium silicate. The maximum efficacy (72.87%) of CR dye desorption was obtained using the solvent methanol. Reusability studies of free and immobilized adsorbents for the decolorization of CR dye were carried out separately in three runs in continuous mode. The % color removal and equilibrium dye uptake of the regenerated free and immobilized adsorbents decreased significantly after the first cycle. The decolorization efficiencies of CR dye adsorption were 53.66% and 43.33%; equilibrium dye uptakes were 1.179 mg g–1 and 0.783 mg g–1 in the third run of operation with free and immobilized adsorbent, respectively. The column experimental data fit very well to the Thomas and Yoon–Nelson models for the free and immobilized adsorbent with coefficients of correlation R2 ≥ 0.976 in various runs. The study concludes that free and immobilized N. nucifera can be efficiently used for the removal of CR from synthetic and industrial wastewater in a continuous flow mode. It makes a substantial contribution to the development of new biomass materials for monitoring and remediation of toxic dye-contaminated water resources.

scholarly journals REMOVAL OF CONGO RED DYE USING ELECTROCOAGULATED METAL HYDROXIDE IN A FIXED-BED COLUMN: CHARACTERIZATION, OPTIMIZATION AND MODELING STUDIES

2019 ◽  
Vol 18 (3) ◽  
pp. 1133-1142 ◽  
Author(s):  
S.I. Suárez-Vázquez ◽  
◽  
J.A. Vidales-Contreras ◽  
J.M. Márquez-Reyes ◽  
A. Cruz-López ◽  
...  
Keyword(s):  
Congo Red ◽  
Fixed Bed ◽  
Metal Hydroxide ◽  
Fixed Bed Column ◽  
Congo Red Dye ◽  
Modeling Studies ◽  
Red Dye

Evaluation of metal hydroxide sludge for reactive dye adsorption in a fixed-bed column system

2004 ◽  
Vol 38 (1) ◽  
pp. 71-78 ◽  
Author(s):  
S. Netpradit ◽  
P. Thiravetyan ◽  
S. Towprayoon
Keyword(s):  
Fixed Bed ◽  
Dye Adsorption ◽  
Reactive Dye ◽  
Metal Hydroxide ◽  
Fixed Bed Column ◽  
Column System

Nanocomposite adsorbent based on ß-cyclodextrin-PVP-clay for the removal of naproxen from aqueous solution: fixed-bed column and modeling studies

2018 ◽  
Vol 132 ◽  
pp. 63-74 ◽  
Author(s):  
Lida Rafati ◽  
Mohammad Hassan Ehrampoush ◽  
Amir Abbas Rafati ◽  
Mehdi Mokhtari ◽  
Amir Hossein Mahvi
Keyword(s):  
Aqueous Solution ◽  
Fixed Bed ◽  
Fixed Bed Column ◽  
Modeling Studies ◽  
Nanocomposite Adsorbent

scholarly journals Adsorption of cationic dye onto fly ash-based geopolymer: Batch and fixed bed column studies

2018 ◽  
Vol 149 ◽  
pp. 02088 ◽  
Author(s):  
Marouane El Alouani ◽  
Saliha Alehyen ◽  
Mohammed El Achouri ◽  
M’hamed Taibi
Keyword(s):  
Fly Ash ◽  
Kinetic Models ◽  
Adsorption Process ◽  
Fixed Bed ◽  
Dye Adsorption ◽  
Second Order ◽  
Cationic Dye ◽  
Column Studies ◽  
Fixed Bed Column ◽  
Pseudo Second Order

Cationic dye adsorption from aqueous solution onto synthesized geopolymer was investigated by batch and fixed bed column experiments. The geopolymer material was elaborated by alkali solution and fly ash supplied by Jorf Lasfar power plant of Morocco. Physical and chemical characteristics of samples were determined by FX, DRX, SEM, 29Si MAS NMR and Zeta potential methods. The Brunauer, Emmett and Teller (BET) technique is used to determine the surface area. The Barrett-Joyner-Halenda (BJH) method was performed to obtain pore size distribution curves and average pore diameter. Kinetics data were analyzed using pseudo-first-order, pseudo-second-order and intraparticle diffusion models. To predict the breakthrough curves and determine the main fixed bed column parameters, three kinetic models; Tomas, Bohart–Adams and Yoon-Nelson models are applied to fitting the experimental data. The kinetic study showed that the pseudo-second-order can be used to describe the methylene blue (MB) adsorption process on the geopolymer matrix. The kinetic models of the adsorption in dynamic column are suitable to describe the continuous adsorption process of dyestuff by the geopolymer. The results of this study indicated that geopolymer derived from fly ash can be used as a low cost effective adsorbent for cationic dye removal from industrial aqueous effluent.

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