Synergistic advance Fenton oxidation and hydrodynamic cavitation treatment of persistent organic dyes in textile wastewater

Badmus, Kassim Olasunkanmi; Irakoze, Ninette; Adeniyi, Olushola Rotimi; Petrik, Leslie

doi:10.1016/j.jece.2019.103521

Cited by 42 publications

(12 citation statements)

References 20 publications

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“…The maximum decolorization of 31.57% was reported at optimized value of 4 bar whereas, beyond the optimum pressure (5 bar) the extent of decolorization decreased to 21.58%. Badmus et al [28] investigated the decolorization of dyes present in textile wastewater using jet loop based HC system. The maximum decolorization as 69.37% was reported at best conditions of inlet pressure as 4 bar with further increase in the inlet pressure to 5 bar resulting in much lower decolorization as 9.3%.…”

Section: Resultsmentioning

confidence: 99%

Degradation of benzene present in wastewater using hydrodynamic cavitation in combination with air

Thanekar

Gogate

Знак

et al. 2021

Ultrasonics Sonochemistry

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Section: Resultsmentioning

confidence: 99%

Degradation of benzene present in wastewater using hydrodynamic cavitation in combination with air

Thanekar

Gogate

Знак

et al. 2021

Ultrasonics Sonochemistry

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“…The enhancing effect on OG discoloration and mineralization was attributed to the zero valence iron slowly dissolving and leading to ferrous cations, which catalyze the generation of radicals. Recently, Badmus et al 17 have tested the discoloration and degradation of Orange II using a hydrodynamic cavitation system assisted with hydrogen peroxide and supplemented with ferrous sulfate or with dispersed zero valence iron. The cavitation equipment used was a combination of orifices and venturi in a jet loop.…”

Section: ■ Methodsmentioning

confidence: 99%

Continuous Heterogeneous Fenton-Type Process for Dye Pollution Abatement Intensified by Hydrodynamic Cavitation

Salierno

Napoleone

Maisterrena

et al. 2021

Ind. Eng. Chem. Res.

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The heterogeneous Fenton-type process was investigated in a continuous upflow fixed-bed reactor (UFBR) of a nano Prussian Blue catalyst supported on γ-alumina beads. Temperature and oxidant concentration strongly increased dye discoloration and total organic carbon (TOC) conversion. The long-term stability of the catalyst was confirmed. The best performance was found with a residence time of 2 min at 353 K and an inlet hydrogen peroxide concentration twice the stoichiometric one required for mineralization, attaining complete discoloration and 45% TOC conversion. The formed reactive species continued the reaction after leaving the UFBR. Hydrodynamic cavitation (HC) of the collected outlet stream led immediately to complete discoloration and doubled the TOC conversion in 40 min. Short-chain carboxylic acids accounted for about 70% of the remaining TOC. The UFBR in-series with the HC reactor led to complete discoloration and intensified the TOC conversion. The subsequent HC step thoroughly consumed the remnant oxidant, increasing its efficiency.

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“…87 Furthermore, the application of ultrasound can improve advanced oxidative processes (AOPs) due to oxidative species generation. 10 Therefore, this technology can be combined with other advanced oxidation processes, including biological treatment, 88 the ozonation process, 89 and the Fenton process, 90 to achieve synergistic effects in reducing organic and energy-efficient matter.…”

Section: ■ Sonoelectrochemical Applicationsmentioning

confidence: 99%

Sonoelectrochemistry: Ultrasound-assisted Organic Electrosynthesis

Rodrigues

Lira

Padoin

et al. 2021

ACS Sustainable Chem. Eng.

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The application of ultrasound with electrochemistry in organic chemistry (known as organic sonoelectrochemistry) accelerates the activation process of chemical reactions. This hybrid technology enhances electrical efficiency and modifies and increases the product yield. Moreover, it facilitates the mass transfer phenomena and the processes of cleaning, degassing, and activation of the electrode surfaces; maintains higher current densities for efficient chemical transformations; and also works efficiently for mixing of reactants in multiphase systems. The ultrasound technology has a prominent effect in heterogeneous reaction systems especially during the solid (electrode)–liquid (electrolytic mixture) interfacial cavitation process. The ultrasound technology gains attention due to its fundamental and positive effect in organic chemistry to make possible the challenging electrosynthetic processes. Herein, we report the sonoelectrosynthetic methods that will help researchers to understand and apply this methodology for scale-up of processes in organic synthesis and also in more modern innovative continuous-flow organic electrochemistry. Therefore, this study will provide valuable insight into the effects caused by ultrasound-assisted electrosynthesis and how this technology revolutionizes organic synthesis. It is believed that the hybrid sonoelectrochemical synthesis serves as a solution to the limitations of the commercialization of synthetic processes and offers a new, modern aspect in organic synthesis in a clean, hassle-free, and sustainable approach.

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Synergistic advance Fenton oxidation and hydrodynamic cavitation treatment of persistent organic dyes in textile wastewater

Cited by 42 publications

References 20 publications

Degradation of benzene present in wastewater using hydrodynamic cavitation in combination with air

Degradation of benzene present in wastewater using hydrodynamic cavitation in combination with air

Continuous Heterogeneous Fenton-Type Process for Dye Pollution Abatement Intensified by Hydrodynamic Cavitation

Sonoelectrochemistry: Ultrasound-assisted Organic Electrosynthesis

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