Ultrasonic Aggregate Breakdown of an Oxisol as Affected by Cavitation Intensity

In the soil aggregate stability analysis using ultrasound, the absorbed energy by soil-water suspension is expressed in J mL −1 or J g −1 . However, the same energy (J) can be obtained from different combinations of sonication time and power. We evaluated the effect of four different amplitudes (12,...

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Bibliographic Details
Published in:Communications in Soil Science and Plant Analysis 2017-01, Vol.48 (7), p.818-824, Article 00103624.2017.1299170
Main Authors: Ribeiro, Bruno Teixeira, de Lima, José Maria, Curi, Nilton, de Oliveira, Geraldo César, da Silva, Érika Andressa, Silva, Bruno Montoani
Format: Article
Language:English
Subjects:
Soil aggregate stability
soil dispersion
ultrasonic method
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Summary:In the soil aggregate stability analysis using ultrasound, the absorbed energy by soil-water suspension is expressed in J mL −1 or J g −1 . However, the same energy (J) can be obtained from different combinations of sonication time and power. We evaluated the effect of four different amplitudes (12, 18, 24, and 30 µm) by varying the sonication time in order to obtain the same total ultrasonic energy applied. Aggregates 4-8 mm size from a Brazilian Acrudox were sonicated using a sonicator probe-type. After each sonication, the soil aggregates were wet-sieved and obtained the oven-dried mass of aggregates (8-2 mm; 2-1 mm; 1-0.5 mm; 0.5-0.25 mm; and
ISSN:0010-3624
1532-2416
1532-4133
DOI:10.1080/00103624.2017.1299170