Effect of ultrasonic treatment of digestion sludge on bio-hydrogen production from sucrose by anaerobic fermentation

Yi Ping Guo, Sang Hyoun Kim, Shi Hwu Sung, Po Heng Lee

Research output: Journal article publicationJournal articleAcademic researchpeer-review

40 Citations (Scopus)


The utilization of ultrasonic treatment on digestion sludge to enhance microbial activity for bio-hydrogen production was investigated. The optimal conditions of ultrasonic time and density on digestion sludge were detected using Central Composite Experimental Design. The regression analysis showed that a significant increase of 1.34 fold in bio-hydrogen production rate could be obtained when ultrasonic time was 10 s and ultrasonic density around 130 W/l at digester sludge concentration of 15 g VSS/l. The analyses of biodegradation characteristics in bio-hydrogen producing process implied that ultrasound did not denature the digestion sludge but just improved its biodegradation efficiency. In order to find out the mechanism of ultrasonic treatment on digestion sludge, a control experiment was designed and COD values of digestion sludge in different treatment conditions was measured.
Original languageEnglish
Pages (from-to)3450-3455
Number of pages6
JournalInternational Journal of Hydrogen Energy
Issue number8
Publication statusPublished - 1 Apr 2010
Externally publishedYes


  • Bio-hydrogen production
  • Digestion sludge
  • Mechanism
  • Ultrasound

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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