Mechanical Behavior of Soils Polluted by Olive Mill Wastewater – Case Bouladhieb Evaporation Pond Site, Sfax, Tunisia

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Several Mediterranean countries, including Tunisia, face significant soil contamination from olive mill wastewater (OMW) produced during olive oil manufacturing.This pollution poses major environmental risks, impacting soil dwelling organisms and humans through food chains, yet it remains poorly understood.This experimental study aims to understand the short and mid-term mechanical behavior of OMW contaminated sites.Conducted at an evaporation pond in the Bouladhieb area in the south-east of Tunisia, the research compared the physical, chemical, mechanical, and geotechnical properties of virgin soil with those of soil artificially polluted by OMW at contamination rates up to 15% of the virgin soil's weight.The study provided significant insights and data to forecast OMW's impact on soil and guide strategies for soil rehabilitation and environmental management in regions frequently generating olive mill wastewater.

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