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Source: Alshawabkeh, A.K. et al., J. Soil Contamination, 8, 617, 1999. With permission.

Source: Alshawabkeh, A.K. et al., J. Soil Contamination, 8, 617, 1999. With permission.

dimensional configurations, the ineffective area is half of total area, when the spacing of the electrodes of the same polarity is equal to the opposite-charge electrode spacing. Thus, it is not practical to use such a scheme unless remediation is implemented in two stages in which the electrode polarity can be changed.

This is also the case for the two-dimensional square arrangement. The results show that one-dimensional configurations with the same-polarity electrode spacing of one-half and one-third of opposite-polarity require an increase of 100 and 200% in number of electrodes when compared with the same of equal electrode spacing. With respect to two-dimensional configurations, the hexagonal configuration needs only 15% more electrodes than square configuration.

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