A facile hydrothermal synthesis, adsorption kinetics and isotherms to Congo Red azo-dye from aqueous solution of NiO/graphene nanosheets adsorbent

2015 ◽  
Vol 26 ◽  
pp. 354-363 ◽  
Author(s):  
Xinshan Rong ◽  
Fengxian Qiu ◽  
Jiao Qin ◽  
Hao Zhao ◽  
Jie Yan ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Hydrothermal Synthesis ◽  
Adsorption Kinetics ◽  
Congo Red ◽  
Azo Dye ◽  
Graphene Nanosheets ◽  
Kinetics And Isotherms

scholarly journals Photocatalytical Degradation of Congo Red Azo Dye Using Phosphono-Aminoacid-Cd(II) Pendant Groups Grafted on a Polymeric Support

2019 ◽  
Vol 70 (10) ◽  
pp. 3473-3476 ◽  
Author(s):  
Laura Cocheci ◽  
Lavinia Lupa ◽  
Aniela Pop ◽  
Aurelia Visa ◽  
Bianca Maranescu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Congo Red ◽  
Azo Dye ◽  
Organic Dyes ◽  
Degradation Process ◽  
Polymer Support ◽  
Polymeric Support ◽  
Vis Spectroscopy ◽  
Red Dye ◽  
Scanning Electron

In the present study, a new compound was used for decontaminating water polluted by Congo Red dye. Phosphono-aminoacid-Cd(II) pendant groups grafted on a polymeric support was prepared using impregnation of a polymer support functionalized with phosphono-aminoacid groups with an aqueous solution of Cd(NO3)2x4H2O. The catalyst was characterized by Fourier transform infrared ray, scanning electron microscope, termogravimetric analysis UV-Vis spectroscopy. The results suggest that the studied material could efficiently be used as photocatalyst in the degradation process of waters containing organic dyes under UV-Vis light irradiation.

Adsorption of Congo Red from Aqueous Solution onto Chitosan/Rectorite Composite

2013 ◽  
Vol 690-693 ◽  
pp. 438-441 ◽  
Author(s):  
Tao Feng ◽  
Lei Xu
Keyword(s):  
Aqueous Solution ◽  
Adsorption Kinetics ◽  
Congo Red ◽  
Adsorption Process ◽  
Order Equation ◽  
Interlayer Distance ◽  
Kinetics Studies ◽  
Pseudo Second Order ◽  
Cr Concentration ◽  
Cr Uptake

The chitosan/rectorite composite was prepared and characterized by XRD. The interlayer distance of rectorite was enlarged from 2.53 nm to 3.01 nm. Congo red (CR) was selected as a model anionic dye and the adsorption tests of CR onto chitosan/rectorite composite were carried out. The results showed that the CR adsorption process is dependent on pH and initial CR concentration and temperature. The maximal CR uptake by chitosan/rectorite composite was 73.8 mg g-1 in the test. Adsorption kinetics studies indicated that the sorption processes were better fitted by pseudo-second order equation.

Removal of congo red azo dye from aqueous solution by ZnO nanoparticles loaded on multiwall carbon nanotubes

2019 ◽  
Vol 106 ◽  
pp. 150-155 ◽  
Author(s):  
Seyed Masoud Seyed Arabi ◽  
Rahman Shakibaei Lalehloo ◽  
Mohamad Reza Talei Bavil Olyai ◽  
Gomaa A.M. Ali ◽  
Hamidreza Sadegh
Keyword(s):  
Carbon Nanotubes ◽  
Aqueous Solution ◽  
Zno Nanoparticles ◽  
Congo Red ◽  
Azo Dye ◽  
Multiwall Carbon Nanotubes ◽  
Multiwall Carbon

Adsorption Kinetics and Isotherms of Arsenic(V) from Aqueous Solution Onto Ni0.5Zn0.5Fe2O4 Nanoparticles

2013 ◽  
Vol 13 (4) ◽  
pp. 2835-2841 ◽  
Author(s):  
Ruijiang Liu ◽  
Yi Lu ◽  
Xiangqian Shen ◽  
Xinchun Yang ◽  
Xuewen Cui ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Adsorption Kinetics ◽  
Kinetics And Isotherms

Catalytic Degradation of Azo Dye Congo Red in Aqueous Solution by LiMn2O4

2013 ◽  
Vol 634-638 ◽  
pp. 500-503
Author(s):  
Yun Hui Long ◽  
Jun Ming Guo ◽  
Du Shu Huang ◽  
Gui Yang Liu
Keyword(s):  
Aqueous Solution ◽  
Congo Red ◽  
Azo Dye ◽  
Orthogonal Experiment ◽  
Catalytic Degradation ◽  
Spinel Limn2o4 ◽  
Experimental Conditions ◽  
Initial Ph ◽  
Degradation Of Azo Dye

Catalytic degradation of azo dye Congo red in aqueous solution by spinel LiMn2O4 was studied. Degradation conditions were also optimized by orthogonal experiment. The results showe that the optimal degradation experimental conditions are: The initial pH is 3.0; The amount of catalyst is 10.0 mg; The amount of 30% H2O2 is 2.00 mL. The decolourization ratio of 20 mL 20 mg/L Congo red solution is 85.95%.

scholarly journals Adsorption Behaviours of Anionic Azo Dye (Congo Red) from Aqueous Solution on Magnetic Expanded Graphite Material (EG@CoFe2O4) Composites

2020 ◽  
Vol 32 (4) ◽  
pp. 865-870
Author(s):  
Lam Van Tan ◽  
Nguyen Thi Hong Tham ◽  
Van Thuan Tran ◽  
Dao Thi To Uyen ◽  
Pham Gia Vu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Adsorption Capacity ◽  
Congo Red ◽  
Azo Dye ◽  
Expanded Graphite ◽  
Graphite Material ◽  
Experimental Conditions ◽  
Batch Mode ◽  
Before And After ◽  
Red Dye

In this paper, a potentiality of magnetic expanded graphite material (EG@CoFe2O4) for the adsorptive removal of Congo red, an anionic azo dye, from aqueous solution was studied. The experiments were carried out in batch mode in which various experimental conditions including contact time, initial dye concentration, adsorbent dosage and pH were varied and their influences on the adsorption yield were investigated. The surface of the adsorbent before and after the removal of the dye was characterized by using FT-IR analysis. Maximum adsorption of dye was achieved at pH 6. The adsorption capacity of Congo red onto EG@CoFe2O4 was found to be as high as 101.2 (mg/g), which is higher than the adsorption capacity of the CoFe2O4 (45.7 (mg/g)). These results suggested the use of expanded graphite materials as an efficient adsorbent for decontamination of Congo red dye from factory effluents.

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