Dr. Kleanthis Simyrdanis Profile

Dr. Kleanthis Simyrdanis

at Foundation for Research and Technology-Hellas

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Proceedings Article | 12 August 2014 Paper

Monitoring of olive oil mills’ wastes using electrical resistivity tomography techniques

Kleanthis Simyrdanis, Nikos Papadopoulos, Stella Kirkou, Apostolos Sarris, Panagiotis Tsourlos

Proceedings Volume 9229, 92291P (2014) https://doi.org/10.1117/12.2066298

KEYWORDS: Tomography, Electrodes, Data acquisition, Pollution, Environmental monitoring, Environmental sensing, Remote sensing, Geophysics, Ecosystems, Data modeling

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Olive oil mills’ wastes (OOMW) are one of the byproducts of the oil production that can lead to serious environmental pollution when they are deposited in ponds dug on the ground surface. Electrical Resistivity Tomography (ERT) method can provide a valuable tool in order to monitor through time the physical flow of the wastes into the subsurface. ERT could potentially locate the electrical signature due to lower resistivity values resulting from the leakage of OOMW to the subsurface. For this purpose, two vertical boreholes were installed (12m depth, 9 m apart) in the vicinity of an existing pond which is filled with OOMW during the oil production period. The test site is situated in Saint Andreas village about 15km south of the city of Rethymno (Crete, Greece). Surface ERT measurements were collected along multiple lines in order to reconstruct the subsurface resistivity models. Data acquisition was performed with standard and optimized electrode configuration protocols. The monitoring survey includes the ERT data collection for a period of time. The study was initiated before the OOMW were deposited in the pond, so resistivity fluctuations are expected due to the flow of OOMW in the porous subsurface media through time. Preliminary results show the good correlation of the ERT images with the drilled geological formations and the identification of low resistivity subsurface zone that could be attributed to the flow of the wastes within the porous layers.

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