Applying Response Surface Methodology
to Optimize the Treatment of Swine Slaughterhouse
Wastewater by Electrocoagulation

Bùi, Hà Mạnh

doi:10.15244/pjoes/78440

Cited by 12 publications

(7 citation statements)

References 23 publications

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“…The TN removal was found to increase with an increase in pH and retention time. Bui, (2018) reported a similar observation. When the retention time has increased the generation of hydrogen gas at cathode and metal ions at anode observed, this phenomena improves the removal of pollutants in the EC process.…”

Section: Resultssupporting

confidence: 58%

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Domestic wastewater treatment in a coupled sequential batch reactor‐electrochemical reactor process

Akula

Gaddam

Damaraju

et al. 2020

Water Environment Research

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The effectiveness of a sequenced biological–physicochemical reactor system for treating sewage was studied. The biological degradation was conducted in a Sequential Batch Reactor, which had innovative features for simplifying the operation and maintenance of the reactor. The reactor was operated at 4, 6, 8, and 12 hr cycle. Up to 82% removal of Chemical Oxygen Demand (COD), 50% removal of Dissolved Organic Carbon (DOC), 45% removal of Total Nitrogen (TN), and 45% removal of Total Phosphorus (TP) were achieved. The treated effluent was further polished in a continuous‐flow bipolar‐mode electrochemical reactor to remove additional recalcitrant organic matter from the wastewater. The process parameters were optimized using Response Surface Methodology. At the optimum condition (pH = 8.7; Current = 1.0; reaction time = 9.0), up to 90% removal of COD, 67% removal of DOC, 61% removal of TN, and 99.9% removal of TP were achieved in the coupled system. Micropollutants belonging to Pharmaceutically Active Compounds, pesticides, etc., were significantly removed. The coupled system completely removed Salmonella, Pseudomonas, and Staphylococcus. However, coliforms were detected at the outlet samples. A UV or ozone disinfection treatment is recommended for the safe reuse of the treated water for nonpotable purposes. Practioner points Sequential sequential batch reactor‐electrochemical reactor process (SBR‐ECR) technology is effective for micropollutant removal from sewage. The coupled SBR‐ECR system requires less footprint compared to conventional biological systems for wastewater treatment. Carbon material balance study revealed that more than 60% of carbon escapes from wastewater in the form of CO2

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Section: Resultssupporting

confidence: 58%

“…Figure 3k shows the association of pH and current on TP removal. The removal efficiency of TP was found high near the central values of pH (Bui, 2018; Nez, 2003). However, the removal efficiency was seen as nearly constant with the current.…”

Section: Resultsmentioning

confidence: 98%

Domestic wastewater treatment in a coupled sequential batch reactor‐electrochemical reactor process

Akula

Gaddam

Damaraju

et al. 2020

Water Environment Research

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“…This method is successfully applied to remove organic pollutants. Compared with other methods, EC has many advantages because it needs low operating cost, produces hydrogen gas used as an alternative energy and results in sludge easily separated by sedimentation and flotation [2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

The New Mechanistic Model to Illustrate the Complex Phenomena in Electrocoagulation Process of Vinasse

Syaichurrozi¹,

Sarto²,

Sediawan³

et al. 2021

Pol. J. Environ. Stud.

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Electrocoagulation (EC) is one of potential methods in wastewater treatments. In treating vinasse waste through EC, complex phenomena occur during EC process. Hence, previous authors have developed mechanistic models, but the models have not illustrated the phenomena completely. Therefore, the goal of this study is to build the new model of EC and apply the model to simulate the EC phenomena in treating vinasse. Many parameters (current, pH, temperature, volume, anode weight loss, dissolved Fe concentration, chemical oxygen demand (COD) concentration, sludge mass and scum mass) are considered in developing this model. The adjustable kinetic constants in this model are k cg , α, β, k e , A f , E f . The results show that this model can fit the measured data of EC of vinasse at various voltages (7.5 and 12.5 V) with low Sum of Squares of Errors (SSE) value (0.0784-0.2758). The voltage of 12.5 V results higher k cg , k e , A f and lower E f values than 7.5 V.

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“…The parameter optimization was carried out by Derringer's desired function methodology. Design-Expert software was used for analysis of variance (ANOVA) and numerical optimization [23].…”

Section: Rsm Modeling and Optimizationmentioning

confidence: 99%

Modeling and Optimization of COD Removal from Cold Meat Industry Wastewater by Electrocoagulation Using Computational Techniques

et al. 2020

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In this paper, electrocoagulation (EC) treatment for the removal of chemical oxygen demand (COD) from cold meat industry wastewater is modeled and optimized using computational techniques. Methods such as artificial neural networks (ANNs) and response surface methodology (RSM), based on the Box–Behnken design using three levels, were employed to calculate the best control parameters for pH (5–9), current density (2–6 mA/cm2) and EC time (20–60 min). Analysis of variance (ANOVA) and 3D graphs revealed that pH and current density are the main parameters used for depicting the EC process. The developed models successfully describe the process with a correlation coefficient of R2 = 0.96 for RSM and R2 = 0.99 for ANN. The models obtained were optimized applying the moth-flame optimization (MFO) algorithm to find the best operating conditions for COD removal. ANN-MFO was used and showed superior COD removal (92.91%) under conditions of pH = 8.9, current density = 6.6 mA/cm2 and an EC time of 38.62 min. The energy consumption with these optimal conditions was 6.92 kWh/m3, with an operational cost of $3.14 (USD)/m3. These results suggest that the proposed computational model can be used to obtain more effective and economical treatments for this type of effluent.

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Applying Response Surface Methodology to Optimize the Treatment of Swine Slaughterhouse Wastewater by Electrocoagulation

Cited by 12 publications

References 23 publications

Domestic wastewater treatment in a coupled sequential batch reactor‐electrochemical reactor process

Domestic wastewater treatment in a coupled sequential batch reactor‐electrochemical reactor process

The New Mechanistic Model to Illustrate the Complex Phenomena in Electrocoagulation Process of Vinasse

Modeling and Optimization of COD Removal from Cold Meat Industry Wastewater by Electrocoagulation Using Computational Techniques

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