scholarly journals Malachite green dye adsorption from model aqueous solutions using corn cob activated carbon (ccac)

2017 ◽  
Vol 62 (4) ◽  
pp. 293-307 ◽  
Author(s):  
Silvia Burcă ◽  
◽  
Cerasella Indolean ◽  
Andrada Măicăneanu ◽  
◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Malachite Green ◽  
Dye Adsorption ◽  
Corn Cob ◽  
Malachite Green Dye

scholarly journals Coconut shell derived ZnCl2 activated carbon for malachite green dye removal

2021 ◽  
Author(s):  
R. Sangeetha piriya ◽  
Rajamani M. Jayabalakrishnan ◽  
M. Maheswari ◽  
Kovilpillai Boomiraj ◽  
Sadish Oumabady
Keyword(s):  
Activated Carbon ◽  
Malachite Green ◽  
Zinc Chloride ◽  
Dye Removal ◽  
Dye Adsorption ◽  
Freundlich Isotherm ◽  
Industrial Effluents ◽  
Intraparticle Diffusion Model ◽  
Malachite Green Dye ◽  
The Impact

Abstract The coconut-based agricultural wastes have gained wide attention as an alternative adsorbent for the removal of diverse pollutants from the industrial effluents. This paper presents the zinc chloride activation of adsorbent carbon and the utilization as an adsorbent for the removal of malachite green dye from aqueous solution. The characterisation of activated carbon was performed to get an insight into the adsorption mechanism. The ZnCl2 activated carbon acquired a higher specific surface area (544.66 m2 g−1) and stability (−32.6 mV). The impact of process parameters including contact time (20–220 min) and initial dye concentration (20–80 mg L−1) were evaluated on the effectiveness of activated carbon for dye removal. The results concluded that zinc chloride activated carbon showed a significant dye adsorption (39.683 mg g−1) at an initial concentration of 20 mg L−1 after 3 hours. Based on the correlation coefficient (R2), the Freundlich isotherm model (0.978–0.998) was best fitted for the experimental data followed by the intraparticle diffusion model (0.88–0.929) as the most appropriate model for malachite green dye removal. Additionally, the energy and thermogravimetric analysis portrayed the suitability of the carbon material to be used as an energy alternative to coal.

Photo-catalytic Study of Malachite Green Dye Degradation Using Rice Straw Extracted Activated Carbon Supported ZnO Nano-particles

2020 ◽  
Vol 10 (6) ◽  
pp. 849-859
Author(s):  
Radwa A. El-Salamony ◽  
Abeer A. Emam ◽  
Nagwa A. Badawy ◽  
Sara F. El-Morsi
Keyword(s):  
Activated Carbon ◽  
Visible Light ◽  
Rice Straw ◽  
Malachite Green ◽  
Dye Degradation ◽  
Nano Particles ◽  
Oh Radicals ◽  
Impregnation Method ◽  
Photo Degradation ◽  
Malachite Green Dye

Objective: ZnO nanoparticles were synthesized using wet impregnation method, and activated carbon from rice straw (RS) prepared through chemical route. Methods: The nano-composites ZnO-AC series were prepared with different ZnO:AC ratio of 10, 20, 50, and 70% to optimize the zinc oxide nanoparticles used. The obtained composites were characterized by FE-SEM, XRD, SBET, and optical techniques then used for the photo-degradation of Malachite green dye (MG) under visible light. Results: It was found that 10ZnO-AC exhibited excellent visible light photo-catalytic performance. The ·OH radicals’ formation is matching with photo-activity of the prepared composites. The photo-degradation efficiency of MG increased from 63% to 93%, when the 10ZnO-AC photocatalyst amount was increased from 0.5 to 6 g/L. Conclusion: The GC-MS technique was used to analyze the intermediates formed; up to 15 kinds of chemicals were identified as the degradation products.

Investigation Study of Removing Methyl Violet Dye From Aqueous Solutions Using Corn-Cob as A Source of Activated Carbon

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Aseel M. Aljeboree ◽  
Asmaa Y. Al-Baitai ◽  
Saifaldeen M. Abdalhadi ◽  
Ayad F. Alkaim
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Methyl Violet ◽  
Corn Cob
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