Fabrication of magnetic activated carbon by carbothermal functionalization of agriculture waste via microwave-assisted technique for cationic dye adsorption

2020 ◽  
Vol 31 (10) ◽  
pp. 4301-4309
Author(s):  
Shiva Salem ◽  
Zahra Teimouri ◽  
Amin Salem
Keyword(s):  
Activated Carbon ◽  
Dye Adsorption ◽  
Cationic Dye ◽  
Agriculture Waste ◽  
Magnetic Activated Carbon ◽  
Microwave Assisted

Preparation of H3PO4 activated carbon from Ziziphus lotus (Z. mauritiana) leaves: Optimization using RSM and cationic dye adsorption

2019 ◽  
Vol 153 ◽  
pp. 288-299 ◽  
Author(s):  
Asmaa Msaad ◽  
Mounir Belbahloul ◽  
Samir El Hajjaji ◽  
Abdeljalil Zouhri
Keyword(s):  
Activated Carbon ◽  
Dye Adsorption ◽  
Cationic Dye

scholarly journals Fabrication of Magnetic Nanoparticles Integrated Carbon Matrix from Chrysopogon zizanioides Roots: Strong Dye Adsorption and Persulphate Assisted Photodegradation

2021 ◽  
Vol 34 (1) ◽  
pp. 201-208
Author(s):  
A.P. Mary Sri Archana ◽  
A. Edwin Vasu
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Magnetic Nanoparticles ◽  
Rhodamine B ◽  
Photocatalytic Oxidation ◽  
Surface Acidity ◽  
Dye Adsorption ◽  
Potassium Persulphate ◽  
Magnetic Activated Carbon ◽  
Chrysopogon Zizanioides

Activated carbon with magnetic nanoparticles was prepared from the roots of Chrysopogon zizanioides by impregnating the biomass with Fe3+ followed by carbonization in a muffle furnace. To assist the carbonization process, Zn2+ ions were also taken along with ferric ions during impregnation. The pHZPC, density of surface functional groups, surface acidity constants and advanced characterizations like FT-IR, N2 adsorption-desorption isotherms, SEM with EDAX, DLS, XRD and VSM analysis were carried out. The adsorption and natural sunlight induced photooxidation of two cationic dyes, namely, methylene blue and rhodamine B in presence of potassium persulphate were studied by varying parameters like time, dye concentration, pH of the dye solution, amount of magnetic activated carbon and concentration of persulphate ions. The adsorption capacities of methylene blue and rhodamine B were found to be 5.97 and 0.96 mg/g, respectively. Photocatalytic oxidation of the dyes was very rapid in the presence of persulphate with the observed rate constants being 5.3 × 10–3 min–1 for methylene blue and 13.0 × 10–3 min–1 for rhodamine B. The magnetic activated carbon is found to be effective even after five successive degradation experiments.

scholarly journals Selective Adsorption and Photocatalytic Degradation of Dyes Using Polyoxometalate Hybrid Supported on Magnetic Activated Carbon Nanoparticles under Sunlight, Visible, and UV Irradiation

2017 ◽  
Vol 2017 ◽  
pp. 1-15 ◽  
Author(s):  
Mehdi Taghdiri
Keyword(s):  
Activated Carbon ◽  
Photocatalytic Degradation ◽  
Uv Irradiation ◽  
Selective Adsorption ◽  
Thermal Analyses ◽  
Dye Adsorption ◽  
Oh Radicals ◽  
Direct Oxidation ◽  
Magnetic Activated Carbon ◽  
Degradation Of Dyes

In this study, magnetic activated carbon (MAC) nanoparticles were coated with an organic hybrid of silicotungstic acid that makes MAC suitable for adsorption and photocatalytic degradation of dyes. The prepared composite was characterized by Fourier transform infrared spectroscopy, powder X-ray diffraction, thermal analyses, scanning electron microscopy, vibrating sample magnetometer, and N2 adsorption-desorption isotherms. Dye adsorption and photocatalytic properties of composite were examined by studying the decolorization of model dyes methylene blue (MB), methyl orange (MO), rhodamine B (RhB), and their mixture solutions. The results show that the composite can selectively adsorb MB molecules from binary mixtures of MB/MO or MB/RhB, and its adsorption capacity is enhanced as compared with the MAC. The composite is also, unlike MAC, a good photocatalyst in the degradation of dyes under sunlight, visible, and UV irradiation and can be separated by magnet, recovered and reused. Removal is via combination of adsorption and then photocatalytic degradation through direct oxidation by composite or indirect oxidation by •OH radicals. While the sunlight is not able to degrade alone MO and RhB solution in the presence of composite, it degrades the MO and RhB mixed with MB solution.

Superior dye adsorption capacity of amorphous WO3 sub-micrometer rods fabricated by glancing angle deposition

2014 ◽  
Vol 2 (4) ◽  
pp. 911-914 ◽  
Author(s):  
Pradip Basnet ◽  
Yiping Zhao
Keyword(s):  
Activated Carbon ◽  
Adsorption Capacity ◽  
Dye Adsorption ◽  
Glancing Angle Deposition ◽  
Cationic Dye ◽  
Glancing Angle ◽  
Angle Deposition ◽  
Adsorption Capability

Amorphous WO3 sub-micrometer rods fabricated by glancing angle deposition have superior cationic-dye adsorption capability, similar to that of activated carbon.

Cationic dye adsorption in sugar cane juice

1959 ◽  
Vol 9 (9) ◽  
pp. 482-486
Author(s):  
M. C. Bennett ◽  
D. A. Haydon
Keyword(s):  
Sugar Cane ◽  
Dye Adsorption ◽  
Cationic Dye ◽  
Cane Juice ◽  
Sugar Cane Juice
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