Adsorption of malachite green dye onto almond peel waste: a study focusing on application of the ANN approach for optimization of the effect of environmental parameters

2022 ◽  
Author(s):  
Tariq J. Al-Musawi ◽  
Sayyed Mohammad Ali Arghavan ◽  
Elaheh Allahyari ◽  
Fatemeh Sadat Arghavan ◽  
Amina Othmani ◽  
...  
Keyword(s):  
Malachite Green ◽  
Environmental Parameters ◽  
Malachite Green Dye

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.

Effective removal of malachite green dye from aqueous solution in hybrid system utilizing agricultural waste as particle electrodes

Chemosphere ◽  
2021 ◽  
Vol 273 ◽  
pp. 129634
Author(s):  
A. Annam Renita ◽  
Kilaru Harsha Vardhan ◽  
P. Senthil Kumar ◽  
P. Tsopbou Ngueagni ◽  
A. Abilarasu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Malachite Green ◽  
Hybrid System ◽  
Agricultural Waste ◽  
Malachite Green Dye ◽  
Effective Removal

scholarly journals Enhanced photocatalytic efficiency of hydrothermally synthesized g-C3N4/NiO heterostructure for mineralization of malachite green dye

2021 ◽  
Vol 11 ◽  
pp. 970-981
Author(s):  
Suresh Kumar Pandey ◽  
Manish Kumar Tripathi ◽  
V. Ramanathan ◽  
Pradeep Kumar Mishra ◽  
Dhanesh Tiwary
Keyword(s):  
Malachite Green ◽  
Photocatalytic Efficiency ◽  
Malachite Green Dye

scholarly journals Photocatalytic Degradation of Malachite Green Dye from Aqueous Solution Using Environmentally Compatible Ag/ZnO Polymeric Nanofibers

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2033
Author(s):  
Marwa F. Elkady ◽  
Hassan Shokry Hassan
Keyword(s):  
Photocatalytic Degradation ◽  
Malachite Green ◽  
Degradation Efficiency ◽  
Solution Flow Rate ◽  
Gravimetric Analysis ◽  
Electrospinning Technique ◽  
Malachite Green Dye ◽  
Polymeric Nanofibers ◽  
Before And After ◽  
Surface Modified

An efficient, environmentally compatible and highly porous, silver surface-modified photocatalytic zinc oxide/cellulose acetate/ polypyrrole ZnO/CA/Ppy hybrid nanofibers matrix was fabricated using an electrospinning technique. Electrospinning parameters such as solution flow rate, applied voltage and the distance between needles to collector were optimized. The optimum homogenous and uniform ZnO/CA/Ppy polymeric composite nanofiber was fabricated through the dispersion of 0.05% wt ZnO into the dissolved hybrid polymeric solution with an average nanofiber diameter ranged between 125 and 170 nm. The fabricated ZnO-polymeric nanofiber was further surface-immobilized with silver nanoparticles to enhance its photocatalytic activity through the reduction of the nanofiber bandgap. A comparative study between ZnO polymeric nanofiber before and after silver immobilization was investigated using X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) and thermal gravimetric analysis (TGA). The photocatalytic degradation efficiency of the two different prepared nanofibers before and after nanosilver immobilization for malachite green (MG) dye was compared against various experimental parameters. The optimum degradation efficiency of nanosilver surface-modified ZnO-polymeric nanofibers was recorded as 93.5% for malachite green dye after 1 h compared with 63% for ZnO-polymeric nanofibers.

scholarly journals Effective Heterogeneous Fenton‐Like degradation of Malachite Green Dye Using the Core‐Shell Fe 3 O 4 @SiO 2 Nano‐Catalyst

2021 ◽  
Vol 6 (4) ◽  
pp. 865-875
Author(s):  
Nafis Mahmud ◽  
Abdelbaki Benamor ◽  
Mustafa S. Nasser ◽  
Muneer M. Ba‐Abbad ◽  
Muftah H. El‐Naas ◽  
...  
Keyword(s):  
Malachite Green ◽  
Core Shell ◽  
Heterogeneous Fenton ◽  
The Core ◽  
Malachite Green Dye ◽  
Nano Catalyst
Sign in / Sign up

Export Citation Format

Share Document