Show/Hide Menu
Hide/Show Apps
anonymousUser
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Videos
Videos
Thesis submission
Thesis submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Contact us
Contact us
Disintegration of Sludge by Sonication and Improvement of Methane Production Rates in Batch Anaerobic Digesters
Date
2013-04-01
Author
Zorba, Gozde T.
Sanin, Faika Dilek
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
12
views
0
downloads
Cite This
Sludge pretreatment prior to anaerobic digestion has been found to reduce sludge production in wastewater treatment. Sludge disintegration using physical, chemical, biological, or mechanical methods can increase biogas production and reduce sludge quantities. Ultrasonication is one of the most effective means of mechanical disintegration. This study aims to investigate ultrasonication as a means for solubilizing waste activated sludge (WAS) to enhance its digestability. Sonication was applied by the use of two different probes providing different powers and energies into the sludge after which the soluble chemical oxygen demand (sCOD) increases were measured. The samples were then digested anaerobically in 250mL serum bottles for about 50 days. Along with the biogas measurements, the rate of methane production is calculated to be able to quantify the effect of pretreatment and compare the results between different applications. The results showed that with the increase of sonication power and sonication time, sCOD increased. An introduction of higher sonication energy made the sCOD rise sharply, however, this increase was not indefinite; it became gradually lower with the further increase of energy. The results indicated that specific methane production, specific methane yield, and the first order methane generation rate increased with increasing energy input.
Subject Keywords
Sludge pretreatment
,
Sludge reduction
,
Ultrasonication
,
Wastewater treatment
URI
https://hdl.handle.net/11511/33321
Journal
CLEAN-SOIL AIR WATER
DOI
https://doi.org/10.1002/clen.201100391
Collections
Department of Environmental Engineering, Article
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
G. T. Zorba and F. D. Sanin, “Disintegration of Sludge by Sonication and Improvement of Methane Production Rates in Batch Anaerobic Digesters,”
CLEAN-SOIL AIR WATER
, vol. 41, pp. 396–402, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33321.