Mineralization of Wastewater from the Teaching Hospital of Treichville by a Combination of Biological Treatment and Advanced Oxidation Processes

Placide, Sadia Sahi; Ollo, Kambiré; Quand-Même, Gnamba Corneil; Guillaume, Pohan Lemeyonouin Aliou; Mohamed, Berté; Ouattara, Lassana

doi:10.9734/ajocs/2021/v10i219086

Cited by 2 publications

(2 citation statements)

References 16 publications

(19 reference statements)

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“…(3) (4) With: q e , the quantity of methyl orange adsorbed at equilibrium in (mg/g); q t , the quantity of methyl orange adsorbed at time t in (mg/g); k 1 (1/h) and k 2 (g.mg -1 .h -1 ) are the adsorption rate constants. Figure 6a and 6b show the results obtained by applying the pseudo-order 1 and 2 kinetic models, respectively.…”

Section: Figure 6 Application Of Pseudo-order 1 (A) and 2 (B) Kinetic...mentioning

confidence: 99%

“…In the literature, several treatment methods exist, including extraction, incineration, chemical and biological methods, electrochemical methods and adsorption [4][5][6][7][8][9]. Among these methods, adsorption is one of the most effective and economical, with a high potential for removing organic compounds, dyes and metals from water [5,6].…”

Section: Introductionmentioning

confidence: 99%

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Use of a Clay from Southern Ivory Coast (Bingerville) for the Adsorption of Methyl Orange in Aqueous Media

Tchonrontcha,

Abollé,

Ollo

et al. 2024

AJPC

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Increasing levels of textile dyes being discharged into the environment as industrial waste represent a serious threat to human health, life, resources and ecological systems. It is therefore necessary to treat wastewater from textile industries before discharging it into the environment. The aim of this project is to eliminate methyl orange (MO) from textile industry wastewater using clay from Bingerville (Ivory Coast). The clay used was characterized by Scanning Electron Microscopy, Brunauer-Emmett-Teller and pH of Zero Charge. MO concentration was monitored using a UV-visible spectrophometer. Characterization of the clay by SEM and BET showed that our clay is microporous. The study showed that the surface of our clay has a pH of zero. Adsorption of methyl orange on our clay reaches adsorption equilibrium in 60 minutes. The adsorption model corresponds to the pseudo-order 2 kinetic model. Two adsorption isotherm models (Langmuir and Freundlich) are applicable to the adsorption of our dye on clay. This implies that the dye adsorption process on our clay is governed by a bimolecular process involving a collision between an active site on the clay and a dye molecule. Bingerville clay can be used to effectively treat dye-contaminated wastewater, since the maximum adsorbed quantity is equal to 58.139 mg g<sup>-1</sup>. The best adsorption rate was obtained in acid medium (pH = 2.26) with an adsorption rate of 91.84%.

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Section: Figure 6 Application Of Pseudo-order 1 (A) and 2 (B) Kinetic...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Use of a Clay from Southern Ivory Coast (Bingerville) for the Adsorption of Methyl Orange in Aqueous Media

Tchonrontcha,

Abollé,

Ollo

et al. 2024

AJPC

Self Cite

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Kinetic of the Oxygen and Chlorine Evolution Reaction on Platinum Electrodes at Neutral pH

Ollo¹,

Placide

Urbain³

et al. 2022

AJRC

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The platinum anode modified by metal oxides electrodes degrades Abidjan wastewater which contains a high concentration of Cl-. During this degradation process, the organic polluants are oxidized, O2 and Cl2 are produced. The purpose of this study is to contribute to the understanding of these reaction mechanisms by studying the kinetics of O2 and Cl2 evolution at neutral pH on Pt. The study was performed by interpreting the voltammograms and Tafel slopes obtained. The voltammetric measurements were carried out using an Autolab Potentiostat from ECHOCHEMIE (PGSTAT 20) connected by interface to a computer. Pt electrode was prepared on titanium (Ti) substrate by thermal decomposition techniques at 400°C. The characterization of the surface of the prepared electrode by scanning electron microscopy and X-ray photoelectron spectrometry showed the presence of platinum on its surface. The results obtained show that the OH· are adsorbed on the active sites of Pt. Then they react to form PtO. Then by reaction between the surface oxygen and PtO, O2 is produced and the active sites are regenerated. In the presence of low Cl- concentration, there is a competition between the Cl2 and O2 evolution reactions. However, Cl2 only is produced for high Cl- concentrations. The kinetics of the evolution reaction of chlorine increases with the concentration of Cl- and remains constant for concentrations greater than 0.5 M. This study also showed that the chlorine reduction reaction produced in solution is a diffusion-controlled reaction for low scan rates.

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Mineralization of Wastewater from the Teaching Hospital of Treichville by a Combination of Biological Treatment and Advanced Oxidation Processes

Cited by 2 publications

References 16 publications

Use of a Clay from Southern Ivory Coast (Bingerville) for the Adsorption of Methyl Orange in Aqueous Media

Use of a Clay from Southern Ivory Coast (Bingerville) for the Adsorption of Methyl Orange in Aqueous Media

Kinetic of the Oxygen and Chlorine Evolution Reaction on Platinum Electrodes at Neutral pH

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