RSC Advances,
Год журнала:
2025,
Номер
15(4), С. 2840 - 2849
Опубликована: Янв. 1, 2025
Microbially
induced
calcium
carbonate
precipitation
(MICP)
has
emerged
as
a
promising
technique
for
environmental
remediation,
particularly
heavy
metal
removal.
This
study
explores
the
potential
of
MICP
Cr(iii)
removal,
analyzing
effects
temperature,
pH,
source
addition,
and
initial
concentration
on
removal
efficiency.
The
results
show
that
can
be
efficiently
removed
with
rate
approaching
100%
under
optimal
conditions
(25
°C,
pH
7.0,
1.0
g
CaCl2).
presence
induces
transformation
CaCO3
crystals
from
calcite
to
spherulitic
aragonite,
forming
Cr-bearing
compounds
hydroxides.
provides
insights
into
mechanisms
MICP-mediated
highlighting
its
feasibility
effectiveness
large-scale
remediation
offering
an
economical
environmentally
friendly
solution
Cr
contamination.
Compost-bedded
pack
barns
(CBP)
are
getting
huge
attention
as
an
alternative
housing
system
for
dairy
cows
due
to
their
beneficial
impact
on
animal
welfare.
Effective
microorganisms
(EM)
inoculums
believed
enhance
compost
quality,
improve
soil
structure
and
benefit
the
environment.
However,
little
information
is
available
of
incubation
with
external
EM
combinations
barn
environment,
quality
microbial
diversity
in
CBP.
This
experiment
was
carried
out
investigate
effect
inoculating
different
[Lactobacillus
plantarum
(L),
Compound
Bacillus
(B)
Saccharomyces
cerevisiae
(S)]
communities
CBP
products,
well
relationship
heifers'
were
subjected
following
four
treatments:
CON
no
inoculum,
LB/LS/LBS
Incubated
weight
ratios
1:2
(L:
B),
S),
1:1:1
B:
respectively.
The
inoculation
(LB,
LS,
LBS)
reduced
concentration
respirable
particulate
matter
(PM10
PM2.5)
CBP,
decreased
serum
total
protein
cholesterol
levels
heifers.
Notably,
LBS
achieved
highest
content
high-density
lipoprotein
compared
other
treatments.
Microbiome
results
revealed
that
bacterial
abundance
(Chao1
index)
fungal
(Shannon
&
Simpson
indexes),
while
increasing
relative
various
genera
(Pseudomonas,
Paracoccus,
Aequorivita)
fungi
(Pestalotiopsis),
which
associated
cellulose
decomposition
ultimately
resulted
accelerating
organic
degradation
humification.
Furthermore,
high
nutrient
elements
(TK&TP)
low
mycotoxin
obtained
inoculation,
showing
a
particularly
pronounced
effect.
Meanwhile,
contributed
decline
proportion
pathogen
categories
but
also
led
increase
saprotroph
categories.
Generally,
positively
impacted
product
fertilizer
environment
by
modifying
cellulolytic
bacteria
fungi,
inhibiting
reproduction
pathogenic
microbes,
especially
co-supplementing
L,
B
S
amplifying
Waste Management Bulletin,
Год журнала:
2024,
Номер
2(3), С. 101 - 108
Опубликована: Июль 8, 2024
This
research
investigates
the
management
of
waste
vegetables
in
Lagos,
Nigeria,
aiming
to
enhance
sustainability
and
reduce
environmental
impact.
study
explores
existing
practices
assesses
their
effectiveness
through
a
mixed-method
approach
combining
quantitative
data
collection
on
volumes
qualitative
interviews
with
stakeholders.
Significant
findings
indicate
steady
increase
vegetable
generation
from
120,000
tons
2016
140,000
2020.
Current
primarily
involve
landfilling,
minimal
recycling.
However,
pilot
projects
composting
biogas
production
show
promising
results
reducing
landfill
use
providing
renewable
energy.
For
instance,
initiatives
have
successfully
decreased
usage
100%
2019
60%
2024,
community
participation
programs
has
grown
10%
85%
over
same
period.
The
concludes
that
while
Lagos
faces
significant
challenges,
sustainable
like
can
effectively
address
these
issues.
underscores
need
for
policy
support
increased
engagement
expand
initiatives,
suggesting
potential
model
other
developing
cities
similar
challenges.
