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Influence of ultrasonic waves on the removal of different oil components from oily sludge
Gao, Yinxin; Ding, Ran; Wu, Song; Wu, Yunqiang; Zhang, Yu; Yang, Min
2015-07-18
Source PublicationENVIRONMENTAL TECHNOLOGY
Volume36Issue:14Pages:1771-1775
AbstractUltrasonic technology is a promising tool for washing oily sludge to recover oil. In this study, the influence of ultrasonic conditions on the removal of different oil components from oily sludge was investigated to optimize ultrasonic washing technology. Among the three frequencies (25, 50 and 100 kHz) applied, ultrasonic washing at 25 kHz exhibited the best performance in terms of oil extraction rate and efficiency. An ultrasonic intensity of 0.33 W/cm(2) was necessary to overcome the energy threshold for oil washing. Application of a standing wave or dual frequencies did not improve the oil removal performance perceptibly. The optimum conditions for the removal of oil from oily sludge were an ultrasonic frequency of 25 kHz, intensity of 0.33 W/cm(2) and sludge/water ratio of 1/2 (in volume). Thin-layer chromatographic flame ionization detection showed that ultrasonication could overcome high energy thresholds, resulting in an increase in the removal of asphaltenes and resins, with the removal of asphaltenes particularly affected by frequency. This study could provide valuable information for the application of ultrasonic technology in oily sludge treatment.
Department环境水质学国家重点实验室
KeywordOily Sludge Ultrasound Oil Removal Ultrasonic Washing Oil Family Compositions
WOS Research AreaEnvironmental Sciences
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Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/32793
Collection环境水质学国家重点实验室
Recommended Citation
GB/T 7714
Gao, Yinxin,Ding, Ran,Wu, Song,et al. Influence of ultrasonic waves on the removal of different oil components from oily sludge[J]. ENVIRONMENTAL TECHNOLOGY,2015,36(14):1771-1775.
APA Gao, Yinxin,Ding, Ran,Wu, Song,Wu, Yunqiang,Zhang, Yu,&Yang, Min.(2015).Influence of ultrasonic waves on the removal of different oil components from oily sludge.ENVIRONMENTAL TECHNOLOGY,36(14),1771-1775.
MLA Gao, Yinxin,et al."Influence of ultrasonic waves on the removal of different oil components from oily sludge".ENVIRONMENTAL TECHNOLOGY 36.14(2015):1771-1775.
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