Microbiology Research,
Journal Year:
2023,
Volume and Issue:
14(4), P. 1774 - 1787
Published: Nov. 2, 2023
Geobacter
grbiciae
can
grow
via
coupling
oxidation
of
ethanol
to
the
reduction
various
forms
soluble
Fe(III)
and
poorly
crystalline
oxide,
suggesting
that
G.
act
as
an
electron-donor
microbe
for
forming
co-cultures
through
direct
interspecies
electron
transfer
(DIET).
In
this
report,
potential
DIET
Methanosarcina
barkeri
800,
sulfurreducens
Δhyb,
or
Methanospirillum
hungatei,
electron-acceptor
microbes,
were
examined.
Co-cultures
Δhyb
performed
with
sole
substance
fumarate
in
presence
granular
activated
carbon
(GAC),
magnetite,
polyester
felt.
The
conditions
co-culturing
M.
800
(or
hungatei)
same
those
except
was
absent
different
cultivation
temperatures
used.
All
anaerobically
cultivated.
Samples
regularly
withdrawn
from
monitor
methane,
fumarate,
succinate
gas
high-performance
liquid
chromatography.
formed
functional
GAC
magnetite.
No
co-culture
H2/formate-utilizing
methanogen
hungatei
observed.
Additionally,
H2/formate-un-utilizing
without
magnetite
supplement.
These
findings
indicate
between
800/G.
is
rather
than
H2/formate,
confirming
acts
microbe.
Although
syntrophically
converted
methane
DIET,
conversion
propionate
butyrate
not
expand
range
microbes
donors
interaction
other
DIET.
However,
metabolism
mixed
microbial
communities
a
product
requires
further
analysis.
This
study
provides
framework
finding
new
microbes.
Journal of Water Process Engineering,
Journal Year:
2024,
Volume and Issue:
64, P. 105715 - 105715
Published: July 1, 2024
Winery
wastewater
is
a
high-strength
effluent,
which
challenging
for
anaerobic
treatment
systems.
In
this
study,
magnetite
and
an
organic
xerogel
doped
with
graphene
oxide
(OX-GO)
were
tested
as
booster
materials
(BMs)
during
the
of
winery
wastewater.
The
enhancing
effect
was
clearly
reflected
in
higher
methane
production
rates
(up
to
25
%
increase)
greater
matter
removal
18
amended
reactors,
compared
unamended
control.
BMs
also
increased
hydrolysis
proteins
coupled
biogas
production.
Furthermore,
acids-enriched
composition
effluents
allowed
valuable
medium-chain
carboxylic
acids
by
tuning
operational
conditions.
Finally,
relative
abundance
specialized
microbial
populations,
such
β-oxidizing/proteolytic
bacteria
(Syntrophomonas)
hydrogenotrophic
methanogens
(Methanobacterium)
Particularly,
presence
promoted
enrichment
specific
bacterial
genera,
including
Rhodopseudomonas,
Propionicicella,
Acetobacter
Anaerolinea,
well
proteolytic
genera
like
Proteiniborus
Proteiniphilum.
Moreover,
genus
Caproiciproducens
exhibited
significant
fold-changes
when
OX-GO
added,
crucial
chain
elongation.
These
are
proposed
potential
additives
systems
boost
their
performance
industrial
effluents.
Cleaner Waste Systems,
Journal Year:
2023,
Volume and Issue:
7, P. 100126 - 100126
Published: Dec. 19, 2023
This
study
investigates
the
impact
of
a
50:50
mixture
pristine
and
recovered
biochar
(CBC)
on
high-solids
anaerobic
digestion
chicken
manure,
comparing
its
performance
with
(PBC),
(RBC),
Control
group.
The
experiment,
conducted
under
mesophilic
conditions
using
15%
total
solid
content
5%
dosage,
showed
that
CBC
treatment
achieves
highest
cumulative
biogas
production
(314
mL
g-1-VS)
methane
o(112
over
21
days.
Further,
digesters
containing
exhibited
rate
COD
removal
(80.8%),
surpassing
amended
PBC
(71.1%),
RBC
(69.2%)
(57.8%).
Although
higher
TAN
adsorption
capacity
48
mg
g-1
compared
to
32
CBC,
both
existing
microbial
population
1.2
×1014
microbes
per
gram,
have
allowed
exhibit
superior
digester
performance.
These
findings
offer
valuable
insights
for
optimising
processes
cutting
operational
costs
in
waste-to-energy
projects
incorporating
as
an
additive.
