Combined ultrasonication and electrokinetic remediation for persistent organic removal from contaminated kaolin

Thuy Duong Pham; Reena Amatya Shrestha; Jurate Virkutyte; Mika Sillanpää

doi:10.1016/j.electacta.2008.09.015

Combined ultrasonication and electrokinetic remediation for persistent organic removal from contaminated kaolin

Thuy Duong Pham
, Reena Amatya Shrestha
, Jurate Virkutyte
, Mika Sillanpää

University of Eastern Finland

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

61 Citations (Scopus)

Abstract

Electrokinetics alone (EK) and ultrasonically enhanced electrokinetics (EK-US) tests were studied to compare and examine the combining effects of these two methods on the removal of the three persistent organic pollutants (POPs): hexachlorobenzene (HCB), phenanthrene (PHE) and fluoranthene (FLU) from kaolin. Two pair tests were conducted into two experiments with different initial low (100 mg/kg) and high (500 mg/kg) contaminant concentrations. Results from the experiments show that, generally, EK-US tests have higher electroosmotic flow, higher current and better performance than EK alone tests. However, ultrasonic enhancement can increase the removal rate only up to about 10% more. Among the three POPs, HCB is the most difficult to treat because of its very stable structure while the other two PAHs are easier to remove.

Original language	English
Pages (from-to)	1403-1407
Number of pages	5
Journal	Electrochimica Acta
Volume	54
Issue number	5
DOIs	https://doi.org/10.1016/j.electacta.2008.09.015
Publication status	Published - 1 Feb 2009
Externally published	Yes

Keywords

Electrokinetics
Persistent organic pollutants
Soil remediation
Ultrasound

ASJC Scopus subject areas

General Chemical Engineering
Electrochemistry

Access to Document

10.1016/j.electacta.2008.09.015

Cite this

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title = "Combined ultrasonication and electrokinetic remediation for persistent organic removal from contaminated kaolin",

abstract = "Electrokinetics alone (EK) and ultrasonically enhanced electrokinetics (EK-US) tests were studied to compare and examine the combining effects of these two methods on the removal of the three persistent organic pollutants (POPs): hexachlorobenzene (HCB), phenanthrene (PHE) and fluoranthene (FLU) from kaolin. Two pair tests were conducted into two experiments with different initial low (100 mg/kg) and high (500 mg/kg) contaminant concentrations. Results from the experiments show that, generally, EK-US tests have higher electroosmotic flow, higher current and better performance than EK alone tests. However, ultrasonic enhancement can increase the removal rate only up to about 10\% more. Among the three POPs, HCB is the most difficult to treat because of its very stable structure while the other two PAHs are easier to remove.",

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T1 - Combined ultrasonication and electrokinetic remediation for persistent organic removal from contaminated kaolin

AU - Pham, Thuy Duong

AU - Shrestha, Reena Amatya

AU - Virkutyte, Jurate

AU - Sillanpää, Mika

PY - 2009/2/1

Y1 - 2009/2/1

N2 - Electrokinetics alone (EK) and ultrasonically enhanced electrokinetics (EK-US) tests were studied to compare and examine the combining effects of these two methods on the removal of the three persistent organic pollutants (POPs): hexachlorobenzene (HCB), phenanthrene (PHE) and fluoranthene (FLU) from kaolin. Two pair tests were conducted into two experiments with different initial low (100 mg/kg) and high (500 mg/kg) contaminant concentrations. Results from the experiments show that, generally, EK-US tests have higher electroosmotic flow, higher current and better performance than EK alone tests. However, ultrasonic enhancement can increase the removal rate only up to about 10% more. Among the three POPs, HCB is the most difficult to treat because of its very stable structure while the other two PAHs are easier to remove.

AB - Electrokinetics alone (EK) and ultrasonically enhanced electrokinetics (EK-US) tests were studied to compare and examine the combining effects of these two methods on the removal of the three persistent organic pollutants (POPs): hexachlorobenzene (HCB), phenanthrene (PHE) and fluoranthene (FLU) from kaolin. Two pair tests were conducted into two experiments with different initial low (100 mg/kg) and high (500 mg/kg) contaminant concentrations. Results from the experiments show that, generally, EK-US tests have higher electroosmotic flow, higher current and better performance than EK alone tests. However, ultrasonic enhancement can increase the removal rate only up to about 10% more. Among the three POPs, HCB is the most difficult to treat because of its very stable structure while the other two PAHs are easier to remove.

KW - Electrokinetics

KW - Persistent organic pollutants

KW - Soil remediation

KW - Ultrasound

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Combined ultrasonication and electrokinetic remediation for persistent organic removal from contaminated kaolin

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

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