Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 878-889 |
| Number of pages | 12 |
| Journal | Chemical Engineering Journal |
| Volume | 353 |
| Early online date | 24 Jul 2018 |
| DOIs | |
| Publication status | Published - 1 Dec 2018 |
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Electrochemical communication in anaerobic digestion. / Oh, Sung T.; Kang, Soo Jung; Azizi, Aqil.
In: Chemical Engineering Journal, Vol. 353, 01.12.2018, p. 878-889.Research output: Contribution to journal › Review article
TY - JOUR
T1 - Electrochemical communication in anaerobic digestion
AU - Oh, Sung T.
AU - Kang, Soo Jung
AU - Azizi, Aqil
PY - 2018/12/1
Y1 - 2018/12/1
N2 - Anaerobic microbial consortia in AD or fermentation oxidise or reduce a target organics (including nutrients) in order to share (i.e. extract and utilise) thermodynamic enthalpy energy (i.e. ATP with thermal energy). Herein, the oxidation and reduction (i.e. electrochemical reaction) is a type of biochemical reaction that involves a transfer of electrons or hydrogens between two species and or taxa. The review discusses an electrochemical communication in the bacterial communal society leading to a 'bacterial cartel' which can be a type of struggling for life (to obtain the biochemical energy constantly). Interestingly, syntrophic bacteria (mostly acetogenic bacteria) bind or flocculate the AD bacterial consortia and build two-layer biofilms or bioflocs to obtain the energy while producing a peculiar profile of fatty acids. The hydrolytic fermentative bacteria also dissociate with acidogenic bacteria for an association with the syntrophic bacteria when Δψ approaches at between –200 and –250 mV. Three examples (single–methanogenesis, long–chain fatty acid (LCFA) degradation and acid–fermentation process) explain in the electrochemical origin. This concept remains quite controversial, but if true, may have major implications in broad areas of environmental and biological processes.
AB - Anaerobic microbial consortia in AD or fermentation oxidise or reduce a target organics (including nutrients) in order to share (i.e. extract and utilise) thermodynamic enthalpy energy (i.e. ATP with thermal energy). Herein, the oxidation and reduction (i.e. electrochemical reaction) is a type of biochemical reaction that involves a transfer of electrons or hydrogens between two species and or taxa. The review discusses an electrochemical communication in the bacterial communal society leading to a 'bacterial cartel' which can be a type of struggling for life (to obtain the biochemical energy constantly). Interestingly, syntrophic bacteria (mostly acetogenic bacteria) bind or flocculate the AD bacterial consortia and build two-layer biofilms or bioflocs to obtain the energy while producing a peculiar profile of fatty acids. The hydrolytic fermentative bacteria also dissociate with acidogenic bacteria for an association with the syntrophic bacteria when Δψ approaches at between –200 and –250 mV. Three examples (single–methanogenesis, long–chain fatty acid (LCFA) degradation and acid–fermentation process) explain in the electrochemical origin. This concept remains quite controversial, but if true, may have major implications in broad areas of environmental and biological processes.
U2 - 10.1016/j.cej.2018.07.154
DO - 10.1016/j.cej.2018.07.154
M3 - Review article
VL - 353
SP - 878
EP - 889
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
ER -