Abstract
We devised an improved electrokinetic remediation method in which an auxiliary electrode was placed at the cathode-side end of the soil to be treated. The electric potential difference between the anode and the auxiliary electrode was fixed constant while that between the cathode and the auxiliary electrode was controlled to make the auxiliary electrode function as a secondary anode. To test the performance of the method, we carried out a bench scale remediation experiment on cadmium-contaminated soil, in which the electrodes and soil etc. were arranged in the following order; anodelanolytelsoil-auxiliary electrodelelectrolytic diaphragmlH-saturated cation exchange resinlcatholytelcathode. During 112 h of the treatment, the net voltage applied to the soil could be maintained and the alkalinization of the soil could be prevented partly due to the acid-neutralization in the cation exchange resin, and partly due to the secondary anode. These results indicated the auxiliary anode was effective to improve the efficiency of electrokinetic remediation of heavy metals contaminated soils.
| Original language | English |
|---|---|
| Pages (from-to) | 467-475 |
| Number of pages | 9 |
| Journal | Journal of the Faculty of Agriculture, Kyushu University |
| Volume | 49 |
| Issue number | 2 |
| Publication status | Published - Oct 1 2004 |
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All Science Journal Classification (ASJC) codes
- Biotechnology
- Agronomy and Crop Science
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Use of auxiliary electrode to prevent alkalinization of soil in electrokinetic remediation. / Mori, Yuki; Wada, Shin Ichiro.
In: Journal of the Faculty of Agriculture, Kyushu University, Vol. 49, No. 2, 01.10.2004, p. 467-475.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Use of auxiliary electrode to prevent alkalinization of soil in electrokinetic remediation
AU - Mori, Yuki
AU - Wada, Shin Ichiro
PY - 2004/10/1
Y1 - 2004/10/1
N2 - We devised an improved electrokinetic remediation method in which an auxiliary electrode was placed at the cathode-side end of the soil to be treated. The electric potential difference between the anode and the auxiliary electrode was fixed constant while that between the cathode and the auxiliary electrode was controlled to make the auxiliary electrode function as a secondary anode. To test the performance of the method, we carried out a bench scale remediation experiment on cadmium-contaminated soil, in which the electrodes and soil etc. were arranged in the following order; anodelanolytelsoil-auxiliary electrodelelectrolytic diaphragmlH-saturated cation exchange resinlcatholytelcathode. During 112 h of the treatment, the net voltage applied to the soil could be maintained and the alkalinization of the soil could be prevented partly due to the acid-neutralization in the cation exchange resin, and partly due to the secondary anode. These results indicated the auxiliary anode was effective to improve the efficiency of electrokinetic remediation of heavy metals contaminated soils.
AB - We devised an improved electrokinetic remediation method in which an auxiliary electrode was placed at the cathode-side end of the soil to be treated. The electric potential difference between the anode and the auxiliary electrode was fixed constant while that between the cathode and the auxiliary electrode was controlled to make the auxiliary electrode function as a secondary anode. To test the performance of the method, we carried out a bench scale remediation experiment on cadmium-contaminated soil, in which the electrodes and soil etc. were arranged in the following order; anodelanolytelsoil-auxiliary electrodelelectrolytic diaphragmlH-saturated cation exchange resinlcatholytelcathode. During 112 h of the treatment, the net voltage applied to the soil could be maintained and the alkalinization of the soil could be prevented partly due to the acid-neutralization in the cation exchange resin, and partly due to the secondary anode. These results indicated the auxiliary anode was effective to improve the efficiency of electrokinetic remediation of heavy metals contaminated soils.
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M3 - Article
AN - SCOPUS:10044269552
VL - 49
SP - 467
EP - 475
JO - Journal of the Faculty of Agriculture, Kyushu University
JF - Journal of the Faculty of Agriculture, Kyushu University
SN - 0023-6152
IS - 2
ER -