Sonication pretreatment of sludge: preliminary study of sludge conditions

Ngoc Tuan Le; Carine Julcour-Lebigue; Henri Delmas

doi:10.15625/0866-708X/53/5/4444

Sonication pretreatment of sludge: preliminary study of sludge conditions

Ngoc Tuan Le, Carine Julcour-Lebigue, Henri Delmas

Author affiliations

Authors

Ngoc Tuan Le University of Science, Vietnam National University Ho Chi Minh City, Vietnam
Carine Julcour-Lebigue Université de Toulouse, LGC, INP-ENSIACET, 31030 Toulouse, France
Henri Delmas Université de Toulouse, LGC, INP-ENSIACET, 31030 Toulouse, France

DOI:

https://doi.org/10.15625/0866-708X/53/5/4444

Keywords:

Alkali pretreatment, Sludge disintegration, Waste activated sludge, Ultrasonic pretreatment

Abstract

The objective of this work was to investigate effects of sludge conditions serving sludge ultrasonication (US). First, it is confirmed specific energy input (ES) plays a key role in sludge disintegration (DD_COD). An optimal total solid concentration of 28 g/L was found to be convenient for sludge US pretreatment. Besides, secondary sludge showed the highest disintegration, followed by digested and mixed sludge regardless of temperature (T) control during US. Additionally, pH adjustment -addition of low NaOH dose (22-40 mg_NaOH/g_TS) could be useful, that significantly improved COD release under subsequent US while resulting in a suitable pH value for anaerobic digestion afterwards.

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Published

12-10-2015

How to Cite

[1]

N. T. Le, C. Julcour-Lebigue, and H. Delmas, “Sonication pretreatment of sludge: preliminary study of sludge conditions”, Vietnam J. Sci. Technol., vol. 53, no. 5, pp. 625–636, Oct. 2015.

IEEE

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Issue

Vol. 53 No. 5 (2015)

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Articles

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