Disperser-induced bacterial disintegration of partially digested anaerobic sludge for efficient biomethane recovery

J. Rajesh Banu, R. Yukesh Kannah, S. Kavitha, M. Gunasekaran, Ick Tae Yeom, Gopalakrishnan Kumar

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


The present study highlights the options to enhance the methane potential of partially digested anaerobic sludge using disperser-induced bacterial disintegration. Floc dispersion with no biomass disintegration was achieved at a disperser-specific energy input of 9.5 kJ/kg TS. The outcomes of both sole bacterial disintegration (S-BD) and disperser-induced bacterial disintegration (D-BD) were assessed in terms of changes in lysate, biopolymer release and increase in biodegradability and methane generation. A higher lysate solubilization of about 22.4% was achieved in D-BD compared to S-BD (11.3%), indicating the efficiency of floc dispersion prior to bacterial disintegration. The biochemical methane result implies that D-BD shows higher methane potential of 0. 279 gCOD/gCOD. Considering the overall outcome achieved in this study, disperser-induced bacterial disintegration is proved to be an effective disintegration process for enhanced biodegradation and higher methane production.

Original languageEnglish
Pages (from-to)165-172
Number of pages8
JournalChemical Engineering Journal
Publication statusPublished - 2018 Sept 1

Bibliographical note

Funding Information:
We are grateful to DST India for the financial assistance provided for this work (SR/FTP/ETA-0021/2010) through the Young Scientist scheme. Authors would like to acknowledge the financial assistance from Ton Duc Thang University, Hochi minh city, Vietnam.

Publisher Copyright:
© 2018 Elsevier B.V.

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering


Dive into the research topics of 'Disperser-induced bacterial disintegration of partially digested anaerobic sludge for efficient biomethane recovery'. Together they form a unique fingerprint.

Cite this