Application of hybrid electrocoagulation and electrooxidation process for treatment of wastewater from the cotton textile industry

Asfaha, Yemane G.; Zewge, Feleke; Yohannes, Teketel; Kassahun, Shimelis Kebede

doi:10.1016/j.chemosphere.2022.134706

Cited by 30 publications

(11 citation statements)

References 37 publications

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“…The significant level of all the variables was tested at the 95% confidence limit, the significant variables were included, and nominal terms were excluded from the model. The model's significance can also be tested by calculating the coefficient of variance, it depicts the spread of the data around the mean and its acceptbale values should be less than 10 % (Asfaha et al, 2022;Nasrullah et al, 2022) In the current study, the coefficient of variance was calculated, in the case of DSW-1 the value is for COD removal suggests that the models explain 92-94% of the process and 80-97% in case of the CCV. The high value of the adjusted R 2 value also shows the significance of the model.…”

Section: Effect Of Variables On Treatment Performancementioning

confidence: 80%

Evaluation and optimization of electrocoagulation process parameters for the treatment of oil drill site wastewater

Kumar

Nawaz

Singh

2022

Preprint

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The effluent from the oil drilling site is a complex mixture of harmful chemicals that causes environmental impacts on its disposal. The treatment of oil drilling site wastewater has not been explored in-depth in the available literature and requires understanding about its characteristics and optimization of the treatment process. In the present study, we have optimized the electrocoagulation process with aluminum electrodes for the drill site wastewater treatment. A multi-level factorial center composite design using response surface methodology (RSM) is applied to quantify the individual and combined effect of the current density, pH and inter-electrode distance (IED) on the COD removal from the drill site wastewater and the energy consumption of the electrocoagulation process. The increasing current density shows significant increase in COD removal. A similar trend was observed with decrease in pH on COD removal. The model obtained from RSM study predicted the optimum current density, pH, and IED within the experimental range of the study. It was found that the optimum condition for DSW-1 samples for 78% COD removal is at 4.76 mA/cm2 and 4 pH, and for DSW-2, we get the COD removal of 64% at 19.04 mA/cm2 and 1.2 cm IED. The study shows that the current density is the dominant factor for the process's energy consumption and operating cost as compared to the pH and IED. The study demonstrated optimization of the electrocoagulation process in drill site wastewater treatment and could be effectively used for large-scale treatment through the electrocoagulation process.

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Section: Effect Of Variables On Treatment Performancementioning

confidence: 80%

Evaluation and optimization of electrocoagulation process parameters for the treatment of oil drill site wastewater

Kumar

Nawaz

Singh

2022

Preprint

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“…In one of their studies with the EC process, treated a synthetic effluent, simulating an effluent generated by the cotton textile industry with concentrations between 267.0 and 933.0 mg·L –1 of dye-type Vivizol Red 3BS. The authors used two Al anodes and two Al cathodes, adding NaCl salt (2.0 g·L –1 ) as the supporting electrolyte.…”

Section: Applications Of the Ec Processmentioning

confidence: 99%

“…In one of their studies with the EC process, 85 With the real effluent, the authors reported an efficiency of 76.0% in terms of reducing the COD index and 89.0% in terms of reducing the concentration of the dye named Vivizol Red 3BS.…”

Section: Electrocoagulation Process Applied To the Textile Industry E...mentioning

confidence: 99%

Electrocoagulation Process as a Consolidated Technology in the Treatment of Industrial Effluents and as a Promising Process in the Treatment of Effluents Generated by Car Washes: A Brief Review

Guerreiro Crizel,

Barreto,

Fiori

et al. 2024

ACS EST Water

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Electrocoagulation (EC) is an efficient treatment method that involves the electrodissolution of anodes, the formation of coagulants in situ, and the production of hydrogen at the cathode, facilitating the removal of pollutants by flotation. Industry in general aims to reduce the contaminant load, expressed as chemical oxygen demand (COD), and EC effluent treatment is particularly effective in this process. The development of EC processes has been an efficient alternative for the treatment of effluents with high pollutant loads, such as tannery, pulp and paper, textile, beverage, and food industries, and many demonstrate the potential for application in car wash effluent. This study presents a review of the use of EC for the treatment of various effluents containing COD, OGs, surfactants, color, and turbidity, but with a greater focus on the vehicle washing sector. It also discusses the factors that influence the efficiency of EC and the main discussions of the authors. Presently, the investigations of studies already carried out show that the performance of the EC process is dependent on many relationships and factors, such as the type of material constituting the electrode, the electric potential difference, the electric current density, the distance between electrodes, the surface area of the electrodes, the pH, the initial concentration of contaminants, the conductivity and the treatment time. The review demonstrated that the EC process has been employed in the treatment of many types of effluents and with relatively high efficiency rates, in general, between 60.0% and up to 90.0%, aiming at the reduction of the COD indexes, the reduction from 60.0% up to 99.0% of color content, the 87.0% reduction of chromium. In turn, for turbidity, it varied on average from 44.0 to 99.0%. For other parameters such as MBAS and OGs, in most studies, the reduction exceeded 90.0%.

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“…Conventional wastewater treatment methods consist of classic chemical, physical or biological processes that enable the separation of solid particles, toxic metals, and soluble organic pollutants from aqueous phase [114]. Coupling of EC with various conventional treatment techniques can increase the overall removal efficiency of pollutant removal, and introduction of RSM enables processes to reach optimum values of operational parameters [115,116]. Among conventional treatment processes, adsorption is the most common method that is being utilized for hybrid EC processes [117].…”

Section: Integration Of Ec With Conventional Treatment Processesmentioning

confidence: 99%

Utilization of Response Surface Methodology in Electrocoagulation for Process Optimization and Parametric Analysis

Akhtar,

Suleman,

Gillani

et al. 2023

ChemBioEng Reviews

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Electrocoagulation (EC) is a well‐recognized and feasible treatment technique for wastewater treatment. The process optimization and analysis of process parameters of EC not only aid to scale up the EC process at an industrial level but also help to explore the economic and environmental considerations to achieve higher efficiency. Response surface methodology (RSM) is a prominent chemometric approach for both process optimization and evaluation of different factors for the removal of target pollutants from wastewater. This review provides a thorough examination of notable scholarly works that focus on the use of the RSM in EC for the purpose of wastewater treatment. Furthermore, the current advancements in implementing the RSM approach not only for standalone EC processes but also for the case are described where it is being practiced as a part in the integrating system for wastewater treatment.

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Application of hybrid electrocoagulation and electrooxidation process for treatment of wastewater from the cotton textile industry

Cited by 30 publications

References 37 publications

Evaluation and optimization of electrocoagulation process parameters for the treatment of oil drill site wastewater

Evaluation and optimization of electrocoagulation process parameters for the treatment of oil drill site wastewater

Electrocoagulation Process as a Consolidated Technology in the Treatment of Industrial Effluents and as a Promising Process in the Treatment of Effluents Generated by Car Washes: A Brief Review

Utilization of Response Surface Methodology in Electrocoagulation for Process Optimization and Parametric Analysis

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