Synthesis and characterizations of a bis(triazole)-based 3D crystalline copper(II) MOF with high adsorption capacity for congo red dye

2015 ◽  
Vol 54 ◽  
pp. 9-11 ◽  
Author(s):  
Xiao-Xiao Wang ◽  
Zuo-Xi Li ◽  
Baoyi Yu ◽  
Kristof Van Hecke ◽  
Guang-Hua Cui
Keyword(s):  
Adsorption Capacity ◽  
Congo Red ◽  
High Adsorption ◽  
Congo Red Dye ◽  
High Adsorption Capacity ◽  
Red Dye

Selective high adsorption capacity for Congo red dye of a new 3D supramolecular complex and its magnetic hybrid

2018 ◽  
Vol 5 (3) ◽  
pp. 694-704 ◽  
Author(s):  
Azizolla Beheshti ◽  
Faezeh Hashemi ◽  
Fatemeh Behvandi ◽  
Peter Mayer ◽  
Davide Atzei
Keyword(s):  
Congo Red ◽  
Selective Adsorption ◽  
Supramolecular Complex ◽  
High Adsorption ◽  
Donor Ligand ◽  
Congo Red Dye ◽  
Nitrogen Donor Ligand ◽  
Nitrogen Donor ◽  
High Adsorption Capacity ◽  
Red Dye

A new pentacoordinated Cd(ii)-CP based on a flexible nitrogen donor ligand (L) and a corresponding core–shell magnetic Fe3O4@SiO2-NH2@Cd(ii)-CP hybrid have been synthesized by ultrasonic irradiation. The products can be proposed as good recyclable adsorbents for the selective adsorption of Congo red dye.

Ultra-high adsorption capacity and selective removal of Congo red over aminated graphene oxide modified Mn-doped UiO-66 MOF

2021 ◽  
Vol 379 ◽  
pp. 407-416
Author(s):  
Abdelazeem S. Eltaweil ◽  
Hala M. Elshishini ◽  
Zekry F. Ghatass ◽  
Gehan M. Elsubruiti
Keyword(s):  
Graphene Oxide ◽  
Adsorption Capacity ◽  
Congo Red ◽  
Selective Removal ◽  
High Adsorption ◽  
High Adsorption Capacity ◽  
Mn Doped

scholarly journals Adsorption of Congo red dye onto antimicrobial terephthaloyl thiourea cross-linked chitosan hydrogels

2017 ◽  
Vol 76 (10) ◽  
pp. 2719-2732 ◽  
Author(s):  
Nouf F. El-Harby ◽  
Shaimaa M. A. Ibrahim ◽  
Nadia A. Mohamed
Keyword(s):  
Adsorption Capacity ◽  
Congo Red ◽  
Dye Adsorption ◽  
Solution Temperature ◽  
Structural Variations ◽  
Maximum Sorption Capacity ◽  
Congo Red Dye ◽  
Chitosan Hydrogels ◽  
Red Dye ◽  
Kinetics And Isotherms

Abstract Adsorption capacity of three antimicrobial terephthaloyl thiourea cross-linked chitosan hydrogels for Congo red dye removal from its aqueous solution has been investigated for the first time in this work. These hydrogels were prepared by reacting chitosan with various amounts of terephthaloyl diisothiocyanate cross-linker. The effect of the hydrogel structural variations and several dye adsorption processing parameters to achieve the best adsorption capacity were investigated. The hydrogels' structural variations were obtained by varying their terephthaloyl thiourea moieties content. The processing variables included initial concentration of the dye solution, temperature and time of exposure to the dye. The adsorption kinetics and isotherms showed that the sorption processes were better fitted by the pseudo-second-order equation and the Langmuir equation, respectively. On the basis of the Langmuir analysis Congo red dye gave the maximum sorption capacity of 44.248 mg/g. The results obtained confirmed that the sorption phenomena are most likely to be controlled by chemisorption process. The adsorption reaction was endothermic and spontaneous according to the calculated results of adsorption thermodynamics.

scholarly journals Evaluation of Cocoa Beans Shell Powder as a Bioadsorbent of Congo Red Dye Aqueous Solutions

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2763
Author(s):  
Gabriela Rodríguez-Arellano ◽  
Juan Barajas-Fernández ◽  
Ricardo García-Alamilla ◽  
Laura Mercedes Lagunes-Gálvez ◽  
Antonio Hilario Lara-Rivera ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Congo Red ◽  
Industrial Wastes ◽  
Cocoa Bean ◽  
Synthetic Dyes ◽  
Cocoa Beans ◽  
Congo Red Dye ◽  
Order Polynomial ◽  
Red Dye ◽  
Shell Powder

The use of synthetic dyes in the textile, leather, and paper industries is a source of groundwater pollution around the world. There are different methods for the treatment of wastewater that has been contaminated with dyes, among which adsorption with agro-industrial wastes is gaining relevance. In the present study, the adsorption capacity of cocoa bean shell powder was evaluated when it was used as a bioadsorbent for Congo red dye in an aqueous medium. A 24 central factorial design with central and axial points was proposed to determine the adsorption capacity. The factors that were studied were the adsorbent (0.06–0.15 g), Congo red (40–120 mg L−1), pH (3–11), and time (4–36 h). The bioadsorbent was characterized through scanning electron microscopy and Fourier-transform infrared spectroscopy. The effects of the factors on the adsorption capacity for Congo red using cocoa bean shell were nonlinear, and they were modeled with a second-order polynomial (p < 0.05) and with an R2 of 0.84. The bioadsorbent obtained a maximum adsorption of 89.96% in runs. The process of optimization by using the surface response allowed the maximization of the adsorption, and the validation showed that 95.79% adsorption of the dye was obtained.

scholarly journals A Study of Compost as an Adsorbent for Congo Red Dye Removal Process

REAKTOR ◽  
2018 ◽  
Vol 17 (4) ◽  
pp. 203
Author(s):  
Gabriel Andari Kristanto ◽  
Ariessyawtra Raindra Lamurvie ◽  
William Koven
Keyword(s):  
Particle Size ◽  
Adsorption Capacity ◽  
Congo Red ◽  
Textile Industry ◽  
Column Height ◽  
Congo Red Dye ◽  
Treatment Processes ◽  
Percentage Removal ◽  
Red Dye ◽  
Dye Molecule

The human population continues to grow annually, and so does the number of textile industries. In textile industry, synthetic dye is one of the most polluting substance in its wastewate which the conventional treatment processes are usually ineffective. Another option is using activated carbon to remove the dye, but carbon is an expensive material. It is is interesting that  material that is rich in carbon, such as compost, may become an alternative solution. The objective of the present study was to assess the capability of compost in treating wastewater dye by determining the optimum compost dosage, particle size, and column height, while considering dye percentage removal and adsoprtion capacity. The optimum compost dosage was 8g/L and the optimum particle size was 1–2 mm in treating the 200 ppm Congo Red dye molecule, resulting in 20.49% removal and a 5.33 mg/g adsorption capacity. The optimum compost column height was 60 cm with 90% removal, and the adsorption capacity was 0.38 mg/g. The dye molecule wore off tthe compost, therefore fresh compost must be introduced in order to maintain its percentage removal level. The compatibility of isotherm model developed in this study with the Freundlich model is similar with previous studies.    Keywords: compost; congo red dye;adsorbent, batch, column 

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