Hibiscus sabdariffa extract modified magnetic polymer nanocomposite for azo dyes removal from aqueous samples

2021 ◽  
Vol 267 ◽  
pp. 124608
Author(s):  
Pegah Haghighi ◽  
Malak Hekmati ◽  
Hakimeh Ziyadi ◽  
Ensieh Ghasemi ◽  
Davoud Esmaeili
Keyword(s):  
Azo Dyes ◽  
Polymer Nanocomposite ◽  
Hibiscus Sabdariffa ◽  
Aqueous Samples ◽  
Dyes Removal

Bi2O3/Nexar® polymer nanocomposite membranes for azo dyes removal by UV–vis or visible light irradiation

2019 ◽  
Vol 321-322 ◽  
pp. 158-163 ◽  
Author(s):  
D. D’Angelo ◽  
S. Filice ◽  
A. Scarangella ◽  
D. Iannazzo ◽  
G. Compagnini ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Azo Dyes ◽  
Polymer Nanocomposite ◽  
Light Irradiation ◽  
Nanocomposite Membranes ◽  
Dyes Removal

Enhancement of azo dyes removal efficiency by using LDH/Tris/Pd catalyst: Kinetic studies

2019 ◽  
Vol 33 (8) ◽  
Author(s):  
Narges Sarmast ◽  
Ramin Ghorbani‐Vaghei ◽  
Zohreh Merati
Keyword(s):  
Removal Efficiency ◽  
Azo Dyes ◽  
Kinetic Studies ◽  
Pd Catalyst ◽  
Dyes Removal

Food Azo-Dyes Removal from Water by Heterogeneous Photo-Fenton with LaFeO3 Supported on Honeycomb Corundum Monoliths

2015 ◽  
Vol 141 (12) ◽  
pp. 04015038 ◽  
Author(s):  
V. Vaiano ◽  
G. Iervolino ◽  
D. Sannino ◽  
L. Rizzo ◽  
G. Sarno ◽  
...  
Keyword(s):  
Azo Dyes ◽  
Dyes Removal

Removal of Azo Dyes from Aqueous Solution by Composite HKUST-1/GO

Nano LIFE ◽  
2015 ◽  
Vol 05 (03) ◽  
pp. 1542003 ◽  
Author(s):  
Qiong Yi ◽  
Ling Li ◽  
Lu Fan ◽  
Keke Sun ◽  
Lebao Mao ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Adsorption Isotherm ◽  
Removal Efficiency ◽  
Adsorption Isotherms ◽  
Azo Dyes ◽  
Freundlich Isotherm ◽  
Dyes Removal

The adsorption of three kinds of azo dyes from aqueous solution on HKUST-1/graphene oxide (GO) composite was studied in view of the removal efficiency, adsorption isotherm, and regenerate of the sorbent. HKUST-1/GO was found to be with higher dyes removal efficiency than HKUST-1. All the adsorption isotherms of azo dyes on HKUST-1/GO composite followed Freundlich isotherm. The adsorbed azo dyes on HKUST-1/GO could be eluted by acetone, so HKUST-1/GO can also be used for enrichment of azo dyes as adsorbent.

scholarly journals Polyaniline/attapulgite-supported nanoscale zero-valent iron for the rival removal of azo dyes in aqueous solution

2019 ◽  
Vol 37 (3-4) ◽  
pp. 217-235 ◽  
Author(s):  
Hui Xu ◽  
Yajuan Zhang ◽  
Yong Cheng ◽  
Weiguo Tian ◽  
Zeting Zhao ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Azo Dyes ◽  
Chemical Reduction ◽  
Degradation Mechanism ◽  
Test Methods ◽  
Zero Valent Iron ◽  
Alizarin Yellow ◽  
Alizarin Yellow R ◽  
Nanoscale Zero Valent Iron ◽  
Dyes Removal

In this paper, polyaniline/attapulgite (PANI/APT)-supported nanoscale zero-valent iron (nZVI) composites were synthesized by liquid-phase chemical reduction method and used for the removal of two kinds of dyes. The structure of as-prepared nZVI/PANI/APT was characterized by various test methods. The removal property and degradation mechanism for azo (alizarin yellow R, methyl red, chrome black T, methyl orange) and non-azo (methylene blue, rhodamine B) dyes in aqueous solution were investigated. The presence of PANI/APT can decrease the aggregation of nZVI particles with maintenance of reactivity and improving adsorption capacity for degradation azo dye. The experiment results showed that the removal property of the composite materials on azo dyes is obviously better than that on non-azo dyes. The varying removal efficiencies of dyes depend on the different degradation mechanisms. Azo dyes removal by nZVI/PANI/APT was mainly due to the reductive cleavage of the N = N of nZVI, while non-azo dyes removal mainly contributes to the adsorption of PANI/APT. The study demonstrated that nZVI/PANI/APT has potential applications for the removal of azo dyes from wastewaters.

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