Hybrid process of electrocoagulation and electrooxidation system for wastewater treatment: A review

Asfaha, Yemane G.; Tekile, Andinet Kebede; Zewge, Feleke

doi:10.1016/j.clet.2021.100261

Cited by 52 publications

(33 citation statements)

References 70 publications

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“…The metal hydroxides formed act as coagulants of liquid impurities, and the hydrogen bubbles formed on the cathode side provide foam formation. These products are usually much more effective than added chemicals and are able to destabilize colloidal suspensions and emulsions [45]. The electrocoagulation method has several advantages, including no need to add chemicals, simple equipment, convenient operation, low initial cost and low operating cost, short reaction time, rapid sedimentation of the created flocs, low sludge production [46], high safety, no need to transport and move chemicals, and coagulant production on site, and can act as an efficient method in separating petroleum compounds from water [21].…”

Section: Schematic Of the Fenton Processmentioning

confidence: 99%

Petroleum Wastewater Treatment

Beni¹,

Adel²,

Zaeimdar³

et al. 2023

Sustainable Development

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Petroleum hydrocarbons in refinery wastewater are considered the main cause of pollution. Wastewater from oil refineries contains large amounts of oil and fat in the form of suspended particles, light and heavy hydrocarbons, phenol, and other dissolved organic substances, which cause environmental pollution if they are discharged into the environment without treatment. Usually, conventional methods of treating petroleum wastes have a lot of costs; due to the existence of sufficient area for the construction of solar distillation ponds and suitable sunlight, as well as a large number of sunny days near the equator, the solar distillation method can be used. Membrane bioreactors based on biological decomposition and biological transformation of oils and waste oil materials have provided new solutions for the biological treatment of these wastewater. In addition to these methods, Fenton’s advanced oxidation methods, electrochemical coagulation method, and membrane filtration method are mentioned in this chapter.

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Section: Schematic Of the Fenton Processmentioning

confidence: 99%

Petroleum Wastewater Treatment

Beni¹,

Adel²,

Zaeimdar³

et al. 2023

Sustainable Development

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“…Membrane filtration and adsorption methods alone cannot effectively treat wastewater unless integrated with extensive pretreatment processes, especially in the treatment of phenolic compounds. Therefore, wastewater treatment research using electrochemical processes is highly attractive [9,10].…”

Section: Introductionmentioning

confidence: 99%

Optimization of the effect of copper electrodes on the removal efficiency of 4-clorophenol from aqueous solution by electrocoagulation

Akkaya

Öden

2022

Environmental Research and Technology

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In this study, the investigation of 4-clorophenol (CP) removal from aqueous solutions using copper electrodes by electrocoagulation (EC) process was done. The effects of various experimental parameters such as pH, current density and exposure time, which affect the EC process, on 4-CP removal were investigated. To optimize the process, response surface methodology (RSM) Box Behnken Design was used by MINITAB program, a series of experimental sets were obtained and carried out. Afterward, 4-CP removal was analyzed and calculated. Results were entered into the MINITAB program as a response. At the end of the optimization, optimum operating conditions were determined as 74 mA/cm 2 , 45 min, 4.24 for current density, exposure times and pH, respectively. When the results were evaluated, approximately 92% phenol removal efficiencies were obtained. Additionally, according to the model results, it was understood that the factors with the greatest effect on 4-CP removal were the exposure time and current density and these had a linear effect, but the pH value did not have a significant effect.

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“…Versatile methods of removing organic pollutants as well as unwanted waste materials can cause direct environmental degradation. They can also be the reason for soil pollution as well as water contamination, as several authors point out in their research (54)(55)(56)(57)(58). Therefore, it is necessary to choose sorbents that are safe for the environment Adsorbents are solid substances used in separation of components from fluid mixtures (liquids and gases).…”

Section: Introductionmentioning

confidence: 99%

Usage of sorbents for diminishing the negative impact of substances leaking into the environment in car accidents

Marková

Kubás

Buganová

et al. 2022

Front. Public Health

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BackgroundCar accidents are often accompanied by dangerous substances leaking into the environment. A proper reaction to the leaking substances, utilizing appropriate sorbents, is necessary for diminishing the negative impact of such events. Sorbents as substances of initial intervention in car accidents (as well as industrial and ecological accidents) are a crucial tool for solving crises connected with dangerous substances escaping into the environment. The risk resulting from the given realities is described in detail in the introduction of the article.The goalThe goal is describing elements of crisis management in dangerous substance leakage and an analysis of sorption resources for quick and efficient interception of leaking substances, water, ethanol, oil, and gasoline in particular, as a reaction to such events.MethodsThe quality of a sorption resource is determined by a parameter called the sorption capacity, which has been established according to the ASTM F716-18 standard. Loose nature-based sorbents (peat) and synthetic silicate-based SiO2, Al2O3, Fe2O3, and polypropylene-based ones were observed. The research has been realized on a water, oil, gasoline, and ethanol sorbate. Each experiment was repeated three timesThe resultsThe results attest to the diversity of sorption capacity in comparing nature-based, silicate-based, and polypropylene-based sorption materials. The highest sorption capacity values were reached with the Sorb 4 sample, which is based on 66% of silica and 18% of alumina. The stated ratio is important, because the Sorb 3 sample contains 85% of silica and 6% of alumina and its absorption capacity values are significantly lower.

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Hybrid process of electrocoagulation and electrooxidation system for wastewater treatment: A review

Cited by 52 publications

References 70 publications

Petroleum Wastewater Treatment

Petroleum Wastewater Treatment

Optimization of the effect of copper electrodes on the removal efficiency of 4-clorophenol from aqueous solution by electrocoagulation

Usage of sorbents for diminishing the negative impact of substances leaking into the environment in car accidents

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