ArticleUltrasonics sonochemistry2026
Remediation of sandy loam soil contaminated with copper by washing assisted with ultrasound.
Article in Ultrasonics sonochemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Amongst heavy metal pollutants bound to soil constituents, copper is one of the most widely used, due to industrial and agricultural applications. This study investigated the combination of leaching with biosourced reagents with 45 or 358 kHz ultrasonic (US) irradiation. A soil was artificially contaminated with Cu and decontamination was performed on this unseparated soil and on two of its granulometric fractions: fine loam and fine sand. Mechanisms of dissolution/diffusion were modelled using parabolic equation. Silent washing of the unseparated soil with 0.2 M citric acid led to desorption of 61.9 % of the Cu after 1 h, similarly to 0.1 M HCl leaching. Under 358 kHz or 45 kHz US, faster calcite dissolution and diffusion occurred, leading to higher extraction yield (65.5 %). Citric acid enhanced dissolution by complexing Cu
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