Pollutants removals and energy consumption in electrochemical cell for pulping processes wastewater treatment: Artificial neural network, response surface methodology and kinetic studies

Adeogun, Abideen Idowu; Bhagawati, Prashant Basavaraj; Shivayogimath, C. B.

doi:10.1016/j.jenvman.2020.111897

Cited by 44 publications

(20 citation statements)

References 30 publications

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“…The pvalues < 0.05, as well as the high sum of squares obtained for the dye removal, implies the significance of the variables and a proof that the model regression is significant. 27,28 The degree of precision (% CV) of 11.61% confirmed some high precision and reliability of the model, while the adequate precision value of 14.46 shows that the model is desirable and possesses adequate signal to navigate the design space. Also, the R 2 indicates that 92.67% of variability can be accounted for by the model.…”

mentioning

confidence: 83%

“…The mechanism of adsorption of the dye onto Cs–Tp@Fe 2 O 3 was investigated from the kinetic data by modeling the data with Lagergren’s pseudo-first order, Ho’s pseudo-second order, Elovich, and Weber–Morris intra-particle diffusion models (eqs –, respectively). , …”

Section: Methodsmentioning

confidence: 99%

“…Thus, data obtained from the equilibrium adsorption were subjected to the Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich isotherm models, as described in eqs –, respectively. These models described the phenomenon governing the retention, release, or mobility of a substance from the aqueous porous media or aquatic environments to a solid phase at constant temperature and pH. , …”

Section: Methodsmentioning

confidence: 99%

“…The hyperbolic tangent “TANSIG” (eq ) was selected for the input to hidden layer mapping, while the hidden layer to the output layer mapping was obtained from a purely linear transfer function “PURELIN”(eq ). Several training runs were performed for the best possible weights in the error back-propagation framework. …”

Section: Methodsmentioning

confidence: 99%

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Chitosan–Terephthalic Acid–Magnetic Composite Beads for Effective Removal of the Acid Blue Dye from Aqueous Solutions: Kinetics, Isotherm, and Statistical Modeling

et al. 2021

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A terephthalic acid-modified chitosan−magnetic nanocomposite (Cs− Tp@Fe 3 O 4 ) was synthesized and characterized. The synthesized Cs−Tp@Fe 3 O 4 was used in a batch process for the adsorptive removal of the acid blue 25 (AB-25) dye in aqueous solutions. The kinetic data were subjected to the pseudo-first-order, pseudosecond-order, Elovich, and intra-particle diffusion models, while the equilibrium data were evaluated with the Langmuir, Freundlich, Temkin, and Dubinin−Radushkevich isotherm models. The effects of the initial dye concentration, contact time, and adsorbent dosage, as well as their interactions, on the removal efficiency were investigated using the design of experiments based on a central composite design, and the resultant data were modeled with the response surface methodology (RSM), artificial neural network (ANN), adaptive neuro-fuzzy inference system (ANFIS), and multiple linear regression (MLR) approaches. The adsorption process followed pseudo-first-order with good agreement between the experimental Q e(exp) and calculated Q e(cal.) amounts of dye adsorbed, as well as the values of correlation coefficient, R 2 (0.999) and percentage of sum square error, % SSE (0.640). All the investigated adsorption isotherms fitted all models well in the order of Dubinin−Radushkevich > Langmuir > Freundlich > Temkin with R 2 > 0.9 with the monolayer maximum adsorption capacity of 440.24 mg/g obtained from the Langmuir isotherm. The RSM model predicted the maximum removal efficiency at an optimum initial dye concentration of 19.11 mg/L, a contact time of 95.3 min, and an adsorbent dosage of 0.18 g. Statistically, the models were fitted in the order of RSM > ANN > ANFIS > MLR. These results indicated that the prepared Cs−Tp@Fe 3 O 4 is an efficient adsorbent for the AB-25 dye removal with excellent stability for water treatment applications.

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mentioning

confidence: 83%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Chitosan–Terephthalic Acid–Magnetic Composite Beads for Effective Removal of the Acid Blue Dye from Aqueous Solutions: Kinetics, Isotherm, and Statistical Modeling

et al. 2021

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“…Although electro-oxidation has received great attention due to its advantages of environmental compatibility, easy handling, and no sludge production, it is a highly energy-demanding method which hinders its extensive application (Adeogun et al, 2021;Ozturk and Yilmaz, 2019). In recent decades, intensive attentions have focused on the electrode preparation (Xia et al, 2020), reactor design (Dória et al, 2020), multitechnology combination (Bustos-Terrones et al, 2021), and parameter operation (Aquino et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

A Novel Method for Efficient Electrochemical Treatment of Actual Dyeing Wastewater With Energy Saving

Yao

Wang

et al. 2021

Preprint

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Electro-oxidation is a promising technology for wastewater treatment with bio-refractory organic and nitrogen pollutants; however, the high energy-demanding hinders its wide application. In this study, a novel method by regulating the significant parameter during electro-oxidation process timely for actual dyeing wastewater treatment with energy saving was studied. Operating factors (i.e., flow rate, initial pH value, electrode distance, and current density) were investigated for chemical oxygen demand (COD) and ammonia removal, and results indicated that current density was the key factor which obviously influenced the electrochemical performance. Indirect oxidation by active chlorine was then confirmed as the main reaction pathway for pollutants oxidation, and the relationship between the current density and the generation of active chlorine was established, suggesting that a large part of the generated active chlorine was not utilized effectively. Subsequently, a novel method by variation of current density timely based on the reaction mechanism was proposed; results indicated that, with similar pollutant removal efficiency, energy consumption could be reduced from 31.6 kWh/m3 to 20.5 kWh/m3. Additionally, the novel system was further optimized by Box-Behnken design: COD and ammonia removal efficiencies could reach 71.8% and 100% respectively, and energy-demanding could be reduced by 45.6%.

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Removal of Natural Organics and Selected Antibiotics Using PAC and Al Electrodes: A Study of the Jumar River

Chaturvedi,

Kumar,

Avishek

2023

Springer Proceedings in Earth and Environmental Sciences

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Pollutants removals and energy consumption in electrochemical cell for pulping processes wastewater treatment: Artificial neural network, response surface methodology and kinetic studies

Cited by 44 publications

References 30 publications

Chitosan–Terephthalic Acid–Magnetic Composite Beads for Effective Removal of the Acid Blue Dye from Aqueous Solutions: Kinetics, Isotherm, and Statistical Modeling

Chitosan–Terephthalic Acid–Magnetic Composite Beads for Effective Removal of the Acid Blue Dye from Aqueous Solutions: Kinetics, Isotherm, and Statistical Modeling

A Novel Method for Efficient Electrochemical Treatment of Actual Dyeing Wastewater With Energy Saving

Removal of Natural Organics and Selected Antibiotics Using PAC and Al Electrodes: A Study of the Jumar River

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