Effect of sediment particle size on polycyclic aromatic hydrocarbon bioaccessibility and degradation by ultrasound

•Sonication reduced particle size of river sediments.•Faster particle size reduction occurred for larger size river sediments.•Sonication caused PAH degradation and increased bioaccessiblity of PAHs.•PAH degradation and bioaccessibility was fastest with larger particle sizes.•Physical effects from m...

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Bibliographic Details
Published in:Ultrasonics sonochemistry 2020-11, Vol.68, p.105203, Article 105203
Main Authors: Na, Seungmin, Wei, Zongsu, Pee, Gim Yang, Hwang, Yu Sik, Weavers, Linda K.
Format: Article
Language:English
Subjects:
Bioaccessibility
Geologic Sediments - chemistry
Particle Size
Polycyclic aromatic hydrocarbons
Polycyclic Aromatic Hydrocarbons - chemistry
Sonochemical
Ultrasonic Waves
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Summary:•Sonication reduced particle size of river sediments.•Faster particle size reduction occurred for larger size river sediments.•Sonication caused PAH degradation and increased bioaccessiblity of PAHs.•PAH degradation and bioaccessibility was fastest with larger particle sizes.•Physical effects from microjets control PAH degradation. The effect of particle size on sonochemical desorption, degradation and change in bioaccessibility of polycyclic aromatic hydrocarbons (PAHs) on contaminated sediments was investigated. Batch experiments were performed with the whole sediment (WS 
ISSN:1350-4177
1873-2828
DOI:10.1016/j.ultsonch.2020.105203