Hydrogen peroxide enhanced sonophotocatalytic degradation of acid orange 7 in aqueous solution: Optimization by Box–Behnken design

2021 ◽  
Author(s):  
Haoxuan Wei ◽  
Md. Hasibur Rahaman ◽  
Jujiao Zhao ◽  
Dayan Li ◽  
Jun Zhai
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Peroxide ◽  
Acid Orange 7 ◽  
Box Behnken Design ◽  
Acid Orange

A New Integrated Photoreactor for Microwave Assisted Decolorization of Acid Orange 7 (AO7) in Aqueous Solutions

2010 ◽  
Vol 8 (1) ◽  
Author(s):  
Carlo Ferrari ◽  
Iginio Longo ◽  
Elpidio Tombari ◽  
Luca Gasperini
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Peroxide ◽  
Continuous Treatment ◽  
Acid Orange 7 ◽  
Acid Orange ◽  
Microwave Assisted ◽  
Reaction Constant ◽  
Batch Condition ◽  
Electrodeless Lamp ◽  
Effective Reaction

A new integrated photoreactor was assembled using a newly designed source, emitting both microwave power and UV radiation inside the reacting medium. The method is highly flexible and cheap, eliminating the need for the multimode and monomode microwave applicators, which are currently used for the excitation of a microwave electrodeless lamp. The characteristics of the source and the results from the decolorization of Acid Orange AO7 in an aqueous solution with hydrogen peroxide are presented. The decolorization process was carried out in batch condition and as continuous treatment and the effective reaction constant of the processes are reported. The experiments show that the photoreactor could be suitable for industrial application.

Catalytic degradation of Acid Orange 7 with hydrogen peroxide using CoxOy-N/GAC catalysts in a bicarbonate aqueous solution

RSC Advances ◽  
2015 ◽  
Vol 5 (102) ◽  
pp. 84303-84310 ◽  
Author(s):  
Lian Duan ◽  
Yanling Chen ◽  
Kaixuan Zhang ◽  
Huoyan Luo ◽  
Jianxin Huang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Peroxide ◽  
Active Carbon ◽  
Nitrogen Atmosphere ◽  
Catalytic Degradation ◽  
Acid Orange 7 ◽  
Acid Orange ◽  
Phenanthroline Complex ◽  
Granular Active Carbon

The cobalt-based catalysts CoxOy-N/GAC were prepared by pyrolysis of a cobalt–phenanthroline complex on granular active carbon in nitrogen atmosphere, and tested for the degradation of Acid Orange 7 with H2O2 in a bicarbonate aqueous solution.

ADSORPTION OF ACID ORANGE 7 BY CETYLPYRIDINIUM BROMIDE MODIFIED SUGARCANE BAGASSE

2016 ◽  
Vol 78 (1-2) ◽  
Author(s):  
Nik Ahmad Nizam Nik Malek ◽  
Nurain Mat Sihat ◽  
Mahmud A. S. Khalifa ◽  
Auni Afiqah Kamaru ◽  
Nor Suriani Sani
Keyword(s):  
Aqueous Solution ◽  
Adsorption Capacity ◽  
Sugarcane Bagasse ◽  
Freundlich Isotherm ◽  
Isotherm Models ◽  
Acid Orange 7 ◽  
Cetylpyridinium Bromide ◽  
Batch Mode ◽  
Acid Orange ◽  
Adsorption Data

In the present study, the adsorption of acid orange 7 (AO7) dye from aqueous solution by sugarcane bagasse (SB) and cetylpyridinium bromide (CPBr) modified sugarcane bagasse (SBC) was examined. SBC was prepared by reacting SB with different concentrations (0.1, 1.0 and 4.0 mM) of cationic surfactant, CPBr. The SB and SBC were characterized using Fourier transform infrared (FTIR) spectroscopy. The adsorption experiments were carried out in a batch mode. The effect of initial AO7 concentrations (5-1000 mg/L), initial CPBr concentrations and pH of AO7 solution (2-9) on the adsorption capacity of SB and SBC were investigated. The experimental adsorption data were analyzed using Langmuir and Freundlich isotherm models. The adsorption of AO7 onto SB and SBC followed Freundlich and Langmuir isotherm models, respectively. The maximum uptake of AO7 was obtained by SBC4.0 (SB treated with 4.0 mMCPBr) with the adsorption capacity of 144.928 mg/g. The highest AO7 removal was found to be at pH 2 and 7 for SB and SBC, respectively. As a conclusion, sugarcane bagasse modified with CPBr can become an alternative adsorbent for the removal of anionic compounds in aqueous solution.

Removal of noxious dye—Acid Orange 7 from aqueous solution using natural pumice and Fe-coated pumice stone

2015 ◽  
Vol 31 ◽  
pp. 124-131 ◽  
Author(s):  
Behzad Heibati ◽  
Susana Rodriguez-Couto ◽  
Nurdan Gamze Turan ◽  
Okan Ozgonenel ◽  
Ahmad B. Albadarin ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Acid Orange 7 ◽  
Pumice Stone ◽  
Acid Orange

Fe-based MOFs for efficient adsorption and degradation of acid orange 7 in aqueous solution via persulfate activation

2016 ◽  
Vol 369 ◽  
pp. 130-136 ◽  
Author(s):  
Xianghui Li ◽  
Weilin Guo ◽  
Zhonghua Liu ◽  
Ruiqin Wang ◽  
Hua Liu
Keyword(s):  
Aqueous Solution ◽  
Acid Orange 7 ◽  
Acid Orange ◽  
Persulfate Activation

Degradation of Acid Orange 7 using a saponite-based catalyst in wet hydrogen peroxide oxidation: Kinetic study with the Fermi's equation

2011 ◽  
Vol 101 (3-4) ◽  
pp. 197-205 ◽  
Author(s):  
J. Herney-Ramirez ◽  
Adrián M.T. Silva ◽  
Miguel A. Vicente ◽  
Carlos A. Costa ◽  
Luis M. Madeira
Keyword(s):  
Hydrogen Peroxide ◽  
Kinetic Study ◽  
Oxidation Kinetic ◽  
Peroxide Oxidation ◽  
Acid Orange 7 ◽  
Acid Orange ◽  
Hydrogen Peroxide Oxidation

scholarly journals Removal of Acid Orange 7 from Aqueous Solution by Metal-Organic Frameworks

Crystals ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 17 ◽  
Author(s):  
Sungwon Yoon ◽  
James Calvo ◽  
Monica So
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Bonding ◽  
Adsorption Capacity ◽  
Metal Clusters ◽  
Metal Organic Frameworks ◽  
Acid Orange 7 ◽  
Acid Orange ◽  
Zeta Potentials ◽  
Metal Organic ◽  
Capacity Data

We investigated the removal of a harmful anionic dye, acid orange 7 (AO7), from aqueous solution using metal-organic frameworks (MOFs). We prepared four different MOFs (ZIF-8, ZIF-67, UiO-66, UiO-66-NH2) by solvothermal reactions and then tested their adsorption of AO7. Infrared spectra and adsorption capacity data confirmed the removal of AO7 from aqueous solution. The factors we investigated affecting adsorption capacity include variation of the organic linkers and metal clusters of the MOFs. Our results suggest that the hydrogen bonding, π–π interactions, and zeta potentials facilitate the removal of AO7 from water. Of the four MOFs examined, ZIF-67 exhibited the highest adsorption capacity of AO7 and can be regenerated easily.

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