Simulation the kinetics of fluoride removal by electrocoagulation (EC) process using aluminum electrodes

Ching Yao Hu; Shang Lien Lo; Wen Hui Kuan

doi:10.1016/j.jhazmat.2006.11.010

Simulation the kinetics of fluoride removal by electrocoagulation (EC) process using aluminum electrodes

Ching Yao Hu, Shang Lien Lo, Wen Hui Kuan

Research output: Contribution to journal › Article › peer-review

89 Citations (Scopus)

Abstract

A variable order kinetic (VOK) model derived from the Langmuir equation was applied to specify the kinetics of the fluoride removal reaction for electrocoagulation (EC). Synthetic solutions were employed to elucidate the effects of the initial fluoride concentration, the applied current and the initial acidity on the simulation results of the model. The proposed model successfully describes the fluoride removal reaction, except in a system in which the initial concentration of the acid is less than the initial fluoride concentration. The violent change of pH companying with the appearance of equivalence point in the titration curves should be the main reason the VOK model fails to simulate the defluoridation in the systems with an initial acidity higher than initial fluoride concentration.

Original language	English
Pages (from-to)	180-185
Number of pages	6
Journal	Journal of Hazardous Materials
Volume	145
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jhazmat.2006.11.010
Publication status	Published - Jun 25 2007
Externally published	Yes

Keywords

Aluminum
Electrocoagulation
Fluoride
Langmuir equation

ASJC Scopus subject areas

Chemical Health and Safety
Process Chemistry and Technology
Safety, Risk, Reliability and Quality
Environmental Engineering

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10.1016/j.jhazmat.2006.11.010

Cite this

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title = "Simulation the kinetics of fluoride removal by electrocoagulation (EC) process using aluminum electrodes",

abstract = "A variable order kinetic (VOK) model derived from the Langmuir equation was applied to specify the kinetics of the fluoride removal reaction for electrocoagulation (EC). Synthetic solutions were employed to elucidate the effects of the initial fluoride concentration, the applied current and the initial acidity on the simulation results of the model. The proposed model successfully describes the fluoride removal reaction, except in a system in which the initial concentration of the acid is less than the initial fluoride concentration. The violent change of pH companying with the appearance of equivalence point in the titration curves should be the main reason the VOK model fails to simulate the defluoridation in the systems with an initial acidity higher than initial fluoride concentration.",

keywords = "Aluminum, Electrocoagulation, Fluoride, Langmuir equation, Aluminum, Electrocoagulation, Fluoride, Langmuir equation",

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T1 - Simulation the kinetics of fluoride removal by electrocoagulation (EC) process using aluminum electrodes

AU - Hu, Ching Yao

AU - Lo, Shang Lien

AU - Kuan, Wen Hui

PY - 2007/6/25

Y1 - 2007/6/25

N2 - A variable order kinetic (VOK) model derived from the Langmuir equation was applied to specify the kinetics of the fluoride removal reaction for electrocoagulation (EC). Synthetic solutions were employed to elucidate the effects of the initial fluoride concentration, the applied current and the initial acidity on the simulation results of the model. The proposed model successfully describes the fluoride removal reaction, except in a system in which the initial concentration of the acid is less than the initial fluoride concentration. The violent change of pH companying with the appearance of equivalence point in the titration curves should be the main reason the VOK model fails to simulate the defluoridation in the systems with an initial acidity higher than initial fluoride concentration.

AB - A variable order kinetic (VOK) model derived from the Langmuir equation was applied to specify the kinetics of the fluoride removal reaction for electrocoagulation (EC). Synthetic solutions were employed to elucidate the effects of the initial fluoride concentration, the applied current and the initial acidity on the simulation results of the model. The proposed model successfully describes the fluoride removal reaction, except in a system in which the initial concentration of the acid is less than the initial fluoride concentration. The violent change of pH companying with the appearance of equivalence point in the titration curves should be the main reason the VOK model fails to simulate the defluoridation in the systems with an initial acidity higher than initial fluoride concentration.

KW - Aluminum

KW - Electrocoagulation

KW - Fluoride

KW - Langmuir equation

KW - Aluminum

KW - Electrocoagulation

KW - Fluoride

KW - Langmuir equation

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Simulation the kinetics of fluoride removal by electrocoagulation (EC) process using aluminum electrodes

Abstract

Keywords

ASJC Scopus subject areas

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