Hybrid central composite design for simultaneous optimization of removal of methylene blue and alizarin red S from aqueous solutions usingVitistree leaves

2017 ◽  
Vol 32 (2) ◽  
pp. e2960 ◽  
Author(s):  
Maryam Bagtash ◽  
Javad Zolgharnein
Keyword(s):  
Methylene Blue ◽  
Aqueous Solutions ◽  
Central Composite Design ◽  
Alizarin Red S ◽  
Simultaneous Optimization ◽  
Alizarin Red ◽  
Central Composite

Statistical optimization of wool dyeing with Alizarin Red S as a natural dye via central composite design

2014 ◽  
Vol 15 (2) ◽  
pp. 254-260 ◽  
Author(s):  
Ali Etemadifar ◽  
Hamed Dehghanizadeh ◽  
Navid Nasirizadeh ◽  
Masoud Rohani-Moghadam
Keyword(s):  
Central Composite Design ◽  
Statistical Optimization ◽  
Natural Dye ◽  
Alizarin Red S ◽  
Alizarin Red ◽  
Wool Dyeing ◽  
Central Composite

Catalytic ozonation process using PAC/γ-Fe2O3 to Alizarin Red S degradation from aqueous solutions: a batch study

2018 ◽  
Vol 206 (7) ◽  
pp. 898-908 ◽  
Author(s):  
Bahram Kamarehie ◽  
Ali Jafari ◽  
Mansour Ghaderpoori ◽  
Mohammad Amin Karami ◽  
Khadijeh Mousavi ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Catalytic Ozonation ◽  
Alizarin Red S ◽  
Alizarin Red ◽  
Batch Study ◽  
Ozonation Process

Treatment of pesticide rinsate towards reuse by photosensitized Fenton-like process

2010 ◽  
Vol 62 (6) ◽  
pp. 1424-1431 ◽  
Author(s):  
W. S. Kuo ◽  
Y. Y. Ho
Keyword(s):  
Molecular Structure ◽  
Molecular Weight ◽  
Methylene Blue ◽  
Hydroxyl Radicals ◽  
Catalytic Effect ◽  
Degradation Efficiency ◽  
Alizarin Red S ◽  
Alizarin Red ◽  
Complete Destruction ◽  
Quinone Structure

A Fenton-like process with combination of dye has been used to enhance the treatment of carbofuran (2,3-dihydro-2,2-dimethylbenzofuran -7-yl methylcarbamate) pesticide rinsate. Results showed that as compared to Fenton-like process, this photosensitization Fenton-like process improved the degradation efficiency of carbofuran rinsate significantly. Among the conditions studied, the optimum dosage for the complete destruction of carbofuran molecular structure was found under a [H2O2]0/[Fe3 + ]0 ratio of 30–35 and a [Dye]0/[Fe3 + ]0 ratio of 2%, respectively, after an irradiance of 500 W/m2 for 20 min. As a result, the COD degradation efficiency of rinsate could be promoted from 37.1 to 61.2% and 66.0% by an addition of methylene blue (MB) and alizarin red S (ARS), respectively. Nevertheless, ARS showed a much more effective acceleration effect on the mineralization and microtoxicity reduction of carbofuran than MB. A mineralization efficiency of 57.2% and a microtoxicity reduction of 90% could be achieved with the addition of ARS. Because of its quinone structure unit, the dye ARS could play a role like hydroquinone to recycle Fe2 +  from Fe3 + , resulting in one more catalytic effect on the reduction of Fe3 +  and thus the mineralization and microtoxicity reduction of carbofuran was greatly promoted in the presence of ARS. In addition, it was found that carbofuran molecules could be decomposed quickly to lower-molecular-weight intermediates and even mineralized by attacking of hydroxyl radicals. Carbofuran was found to be decomposed to carbofuran phenol, 3-oxo carbofuran phenol, and 3-hydroxyl carbofuran phenol initially, and then further be degraded to smaller molecules, such as NO3−, CH3COOH, (COOH)2 and CO2. Accordingly, it was believed that the Fenton-like process along with the aid of a photosensitizer, such as ARS, under an appropriate ratio could be a feasible and potential technology for the treatment of pesticide rinsate.

Adsorptive removal of alizarin red-S and alizarin yellow GG from aqueous solutions using polypyrrole-coated magnetic nanoparticles

2015 ◽  
Vol 3 (1) ◽  
pp. 529-540 ◽  
Author(s):  
Mohammad Bagher Gholivand ◽  
Yadollah Yamini ◽  
Manijeh Dayeni ◽  
Shahram Seidi ◽  
Elham Tahmasebi
Keyword(s):  
Magnetic Nanoparticles ◽  
Aqueous Solutions ◽  
Alizarin Red S ◽  
Alizarin Red ◽  
Adsorptive Removal ◽  
Alizarin Yellow
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