Electrokinetic and ultrasonic treatment of kaolin contaminated by POPs

Thuy Duong Pham; Reena Amatya Shrestha; Mika Sillanpää

doi:10.1080/01496390902983760

Electrokinetic and ultrasonic treatment of kaolin contaminated by POPs

Thuy Duong Pham, Reena Amatya Shrestha, Mika Sillanpää

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

16 Citations (Scopus)

Abstract

Three tests were conducted using ultrasound alone, ultrasound as an enhancement for electrokinetic test and electrokinetic test alone to compare the removal performance of the three persistent organic pollutants, hexachloroben-zene, phenanthrene, and fluoranthene from low permeability kaolin. Results show that the removal efficiency in ultrasonically enhanced electrokinetic test was the highest among experiments, though the removal rates improved were small only. The assistance of ultrasound in electrokinetic remediation can help reduce these hydrophobic organic compounds by increasing their mobility, deso-rption for electroosmotic migration, and also by degrading them through free radical oxidation forming during cavitation process.

Original language	English
Pages (from-to)	2410-2420
Number of pages	11
Journal	Separation Science and Technology
Volume	44
Issue number	10
DOIs	https://doi.org/10.1080/01496390902983760
Publication status	Published - Jan 2009
Externally published	Yes

Keywords

Clayey soil remediation
Electrokinetic process
Persistent organic compounds
Ultrasonication

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Process Chemistry and Technology
Filtration and Separation

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10.1080/01496390902983760

Cite this

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abstract = "Three tests were conducted using ultrasound alone, ultrasound as an enhancement for electrokinetic test and electrokinetic test alone to compare the removal performance of the three persistent organic pollutants, hexachloroben-zene, phenanthrene, and fluoranthene from low permeability kaolin. Results show that the removal efficiency in ultrasonically enhanced electrokinetic test was the highest among experiments, though the removal rates improved were small only. The assistance of ultrasound in electrokinetic remediation can help reduce these hydrophobic organic compounds by increasing their mobility, deso-rption for electroosmotic migration, and also by degrading them through free radical oxidation forming during cavitation process.",

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AU - Shrestha, Reena Amatya

AU - Sillanpää, Mika

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AB - Three tests were conducted using ultrasound alone, ultrasound as an enhancement for electrokinetic test and electrokinetic test alone to compare the removal performance of the three persistent organic pollutants, hexachloroben-zene, phenanthrene, and fluoranthene from low permeability kaolin. Results show that the removal efficiency in ultrasonically enhanced electrokinetic test was the highest among experiments, though the removal rates improved were small only. The assistance of ultrasound in electrokinetic remediation can help reduce these hydrophobic organic compounds by increasing their mobility, deso-rption for electroosmotic migration, and also by degrading them through free radical oxidation forming during cavitation process.

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KW - Electrokinetic process

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KW - Ultrasonication

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Electrokinetic and ultrasonic treatment of kaolin contaminated by POPs

Abstract

Keywords

ASJC Scopus subject areas

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