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최성득

Choi, Sung-Deuk
Environmental Analytical Chemistry Lab.
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dc.citation.endPage 66 -
dc.citation.startPage 61 -
dc.citation.title ULTRASONICS SONOCHEMISTRY -
dc.citation.volume 33 -
dc.contributor.author Oh, Joo-Yeon -
dc.contributor.author Choi, Sung-Deuk -
dc.contributor.author Kwon, Hye-Ok -
dc.contributor.author Lee, Sung-Eun -
dc.date.accessioned 2023-12-21T23:08:54Z -
dc.date.available 2023-12-21T23:08:54Z -
dc.date.created 2016-05-10 -
dc.date.issued 2016-11 -
dc.description.abstract Ultrasonic treatment for sludge reduction in wastewater treatment plants (WWTPs) can substantially affect the fate of trace pollutants. However, their fates in the different phases of sludge and mass balances have rarely been reported. In this study, wastewater sludge samples were ultrasonicated at 600 W for 0-30 min. Then, the leaching of the 16 priority polycyclic aromatic hydrocarbons (PAHs) from the sludge solids (sediment) to the liquid phase (supernatant) was investigated. The total concentration of PAHs (Σ16 PAHs) in the sludge sediment (2.10 μg/g) was comparable with those of previous worldwide studies. Among the 16 PAHs, naphthalene and acenaphthylene were dominant. The total concentrations of PAHs in the supernatant generally increased with sonication time, indicating that PAHs associated with sludge materials, such as microorganisms, were released into the supernatant. Lighter and more water soluble PAHs were released preferentially into the supernatant in dissolved form, whereas heavier and more hydrophobic PAHs were strongly bound to particles. According to mass balance calculations, 21% of the PAHs in the sludge sediment moved to the supernatant without discernible sonodegradation. An additional experiment for degradation of PAHs supported this interpretation, and several reasons for the no significant sonodegradation were discussed. This result suggests that leaching trace pollutants may significantly contaminate the sludge filtrate after ultrasonic treatment, and therefore their fates should be investigated. -
dc.identifier.bibliographicCitation ULTRASONICS SONOCHEMISTRY, v.33, pp.61 - 66 -
dc.identifier.doi 10.1016/j.ultsonch.2016.04.027 -
dc.identifier.issn 1350-4177 -
dc.identifier.scopusid 2-s2.0-84964413678 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/19128 -
dc.identifier.url http://www.sciencedirect.com/science/article/pii/S1350417716301250 -
dc.identifier.wosid 000378956700008 -
dc.language 영어 -
dc.publisher ELSEVIER SCIENCE BV -
dc.title Leaching of polycyclic aromatic hydrocarbons (PAHs) from industrial wastewater sludge by ultrasonic treatment -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Acoustics; Chemistry, Multidisciplinary -
dc.relation.journalResearchArea Acoustics; Chemistry -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor Sludge -
dc.subject.keywordAuthor PAHs -
dc.subject.keywordAuthor Ultrasonic treatment -
dc.subject.keywordAuthor Sonication -
dc.subject.keywordAuthor Leaching -
dc.subject.keywordPlus SEWAGE-SLUDGE -
dc.subject.keywordPlus ACTIVATED-SLUDGE -
dc.subject.keywordPlus ORGANIC CONTAMINANTS -
dc.subject.keywordPlus ANAEROBIC BIODEGRADABILITY -
dc.subject.keywordPlus AEROBIC DIGESTION -
dc.subject.keywordPlus PRETREATMENT -
dc.subject.keywordPlus DISINTEGRATION -
dc.subject.keywordPlus DEWATERABILITY -
dc.subject.keywordPlus KOREA -

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