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 journalArticle

9 Citations (Scopus)

Abstract

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
Volume347
DOIs
Publication statusPublished - 2018 Sep 1

Fingerprint

Disintegration
methane
sludge
Recovery
Methane
solubilization
biodegradation
Biopolymers
Biodegradability
biomass
Biodegradation
energy
Biomass

All Science Journal Classification (ASJC) codes

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

Cite this

Banu, J. Rajesh ; Kannah, R. Yukesh ; Kavitha, S. ; Gunasekaran, M. ; Yeom, Ick Tae ; Kumar, Gopalakrishnan. / Disperser-induced bacterial disintegration of partially digested anaerobic sludge for efficient biomethane recovery. In: Chemical Engineering Journal. 2018 ; Vol. 347. pp. 165-172.
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abstract = "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.",
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Disperser-induced bacterial disintegration of partially digested anaerobic sludge for efficient biomethane recovery. / Banu, J. Rajesh; Kannah, R. Yukesh; Kavitha, S.; Gunasekaran, M.; Yeom, Ick Tae; Kumar, Gopalakrishnan.

In: Chemical Engineering Journal, Vol. 347, 01.09.2018, p. 165-172.

Research output: Contribution to journalArticle

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