Open Journal of Social Sciences,
Journal Year:
2022,
Volume and Issue:
10(13), P. 252 - 267
Published: Jan. 1, 2022
The
aim
of
this
scientific
contribution
is
to
show
a
statistical
analysis
the
manufacturing,
trade
and
services
textile
industry
in
Ecuador,
between
years
2000
2020.
To
achieve
objective,
an
exhaustive
study
Scopus
international
database
Ecuadorian
government
called
National
Institute
Statistics
Censuses
(by
its
acronym
Spanish
INEC).
This
research
provided
following
lines
results:
1)
Bibliometric
Ecuador;
2)
Statistical
3)
Preferences
market.
fundamental
conclusion
that:
Manufacturing
activities
have
11,006
establishments,
which
74.2%
correspond
manufacture
clothing,
except
leather
clothing.
Total
employed
personnel
related
sector
amounts
115,937
people,
68,215
are
women
47,722
men.
In
last
11
years,
has
maintained
average
share
1%
2%
total
GDP,
according
data
from
Central
Bank
Ecuador.
Journal of CO2 Utilization,
Journal Year:
2024,
Volume and Issue:
83, P. 102824 - 102824
Published: May 1, 2024
Ammonia-soda
process,
which
produce
soda
ash,
emits
flue
gas
containing
a
large
amount
of
CO2
and
SOx.
The
wastewater
discharged
from
the
ammonia-soda
process
contains
cations,
such
as
Na+
Ca2+,
can
be
recovered
reacted
with
In
this
study,
we
designed
SOx
utilization
for
sustainable
production
sodium
carbonate
using
recovery
system,
extracting
Ca2+.
proposed
involved
following
steps:
(1)
metal-ion
separation,
produces
NaOH
Ca(OH)2;
(2)
capture
(3)
Ca(OH)2,
respectively.
economic
feasibility
was
verified
by
comparing
its
total
annualized
cost
(TAC)
those
conventional
processes.
Approximately
99%
captured
to
high-purity
desulfurized
gypsum,
transformed
into
CaCO3.
To
confirm
reduction
carbon
dioxide
equivalent
(CO2e)
calculated
evaluating
greenhouse
gases.
CO2e
decreased
71.4%
compared
that
process.
TAC
10.67%
19.63%
Hou
processes,
Thus,
study
proposes
an
industrially
potential
design
utilizing
recycling,
without
additional
reactants,
making
it
more
economically
viable.
Sustainability,
Journal Year:
2024,
Volume and Issue:
16(11), P. 4752 - 4752
Published: June 3, 2024
To
address
the
energy
consumption
issue
in
mining
area
buildings,
this
paper
proposed
a
solar-coupled
mine
water-source
heat
pump
combined
heating
and
cooling
(SMWHP-CHC)
system,
taking
employee
dormitory
building
group
of
coal
enterprise
Tongchuan
City,
China,
as
case
study.
The
system
utilizes
renewable
solar
waste
recovered
from
water
composite
sources,
cold
source
to
meet
demands
for
space
heating,
cooling,
annual
domestic
hot
sustainable
manner.
simulation
model
was
established
by
TRNSYS
analyze
system’s
operational
performance.
results
indicated
that
exhibited
positive
efficiency
environmental
performance
under
different
operating
conditions.
coefficients
(COPsys)
during
season
transition
were
3.54
18.6,
ratio
(EERsys)
3.79.
In
addition,
aiming
minimize
cost
multiple
crucial
device
parameters
synchronously
optimized
employing
PSO-HJ
hybrid
optimization
algorithm
through
GenOpt
2
software.
reduced
8.82%,
investment
significantly
reduced,
while
also
improved.
This
study
can
provide
theoretical
support
engineering
application
SMWHP-CHC
buildings.
Desalination,
Journal Year:
2022,
Volume and Issue:
548, P. 116257 - 116257
Published: Dec. 5, 2022
Many
countries
discharge
considerable
amounts
of
desalination
wastewater
directly
into
the
ocean,
which
cause
environmental
pollution,
destruction
ecosystems,
and
economic
losses.
Desalination
contains
valuable
metal
ions
such
as
Na+,
Ca2+,
Mg2+,
react
with
carbonate
sulfate
ions;
therefore,
it
has
high
potential
to
reduce
NOx,
SOx,
CO2.
Thus,
this
study
designed
process
for
utilization
capture
utilize
CO2
using
NH3.
A
model
was
developed,
composed
following
three
steps:
(1)
ion
separation
in
based
on
pH
swing
processes
separating
Ca2+
Mg2+
Ca(OH)2
Mg(OH)2,
respectively;
(2)
NOx
SOx
generated
(3)
Subsequently,
demonstrate
validity
suggested
process,
an
assessment
conducted
total
annualized
costs
(TACs)
conventional
proposed
were
compared.
As
a
result,
~96
%
captured,
efficiency
99
%,
~94.7
captured.
reduction
11.2
TAC
achieved
indicating
its
feasibility.
Energies,
Journal Year:
2022,
Volume and Issue:
15(19), P. 7298 - 7298
Published: Oct. 4, 2022
Heat
recovery
from
a
high-temperature
wastewater
is
the
major
concern
in
conventional
textile
industry.
However,
limited
space
plant
an
important
constraint
for
process
enhancement.
Therefore,
easily
applicable
heat
system
with
small
amount
of
additional
equipment
to
existing
dyeing
required.
To
meet
needs
industry,
this
study
suggests
integrated
and
supply
consisting
single
exchanger
storage
tank
using
freshwater
as
thermal
carrier
utilize
reusable
wastewater.
Freshwater
stored
after
direct
exchange
supplied
next
process.
Three
different
designs
were
compared
based
on
lower
limit
temperature:
above
50
°C,
40
30
°C
Cases
1,
2,
3,
respectively.
The
energy
flow
analyses
showed
Case
2
be
well
balanced
between
quality
quantity
recovered
heat,
there
was
no
loss
via
drainage.
demand
795.5
kW,
which
lowest
among
all
cases.
Furthermore,
economic
analysis
that
total
cost
reduced
by
63.2%
base
case.
Despite
use
water
tank,
proposed
more
economical
because
operating
costs.
Finally,
detailed
conducted
determining
efficient
temperature
supply.
SSRN Electronic Journal,
Journal Year:
2022,
Volume and Issue:
unknown
Published: Jan. 1, 2022
Considerable
seawater
bittern
is
produced
during
salt
production.
Seawater
can
be
used
to
reduce
CO2
and
SOx
because
of
the
presence
valuable
mineral
ions,
such
as
K+
Mg2+,
which
react
with
carbonate
sulfate
ions
in
high
concentrations.
In
this
study,
a
novel
recovery
process
was
proposed
for
utilization.
The
has
following
steps:
(1)
metal
ion
separation
produce
KOH
Mg(OH)2;
(2)
capture
utilization
using
generated
(3)
KOH.
pay-back
period
(PBP)
calculated
verify
economic
feasibility
process.
results
revealed
an
efficiency
approximately
99%
98%,
respectively.
Furthermore,
annual
net
revenue
153,439
USD/y
based
on
profit
obtained
from
product
savings
absorbent.
Thus,
PBP
6.2
y.
SSRN Electronic Journal,
Journal Year:
2022,
Volume and Issue:
unknown
Published: Jan. 1, 2022
Many
countries
discharge
considerable
amounts
of
desalination
wastewater
directly
into
the
ocean,
which
cause
environmental
pollution,
destruction
ecosystems,
and
economic
losses.
Desalination
contains
valuable
metal
ions
such
as
Na+,
Ca2+,
Mg2+,
react
with
carbonate
sulfate
ions;
therefore,
it
has
high
potential
to
reduce
NOx,
SOx,
CO2.
Thus,
this
study
designed
process
for
utilization
capture
utilize
CO2
using
NH3.
A
model
was
developed,
composed
following
three
steps:
(1)
ion
separation
in
based
on
pH
swing
processes
separating
Ca2+
Mg2+
Ca(OH)2
Mg(OH)2,
respectively;
(2)
NOx
SOx
generated
(3)
Subsequently,
demonstrate
validity
suggested
process,
an
assessment
conducted
total
annualized
costs
(TACs)
conventional
proposed
were
compared.
As
a
result,
~96%
captured,
efficiency
99%,
~94.7%
captured.
reduction
11.2%
TAC
achieved
indicating
its
feasibility.
Open Journal of Social Sciences,
Journal Year:
2022,
Volume and Issue:
10(13), P. 252 - 267
Published: Jan. 1, 2022
The
aim
of
this
scientific
contribution
is
to
show
a
statistical
analysis
the
manufacturing,
trade
and
services
textile
industry
in
Ecuador,
between
years
2000
2020.
To
achieve
objective,
an
exhaustive
study
Scopus
international
database
Ecuadorian
government
called
National
Institute
Statistics
Censuses
(by
its
acronym
Spanish
INEC).
This
research
provided
following
lines
results:
1)
Bibliometric
Ecuador;
2)
Statistical
3)
Preferences
market.
fundamental
conclusion
that:
Manufacturing
activities
have
11,006
establishments,
which
74.2%
correspond
manufacture
clothing,
except
leather
clothing.
Total
employed
personnel
related
sector
amounts
115,937
people,
68,215
are
women
47,722
men.
In
last
11
years,
has
maintained
average
share
1%
2%
total
GDP,
according
data
from
Central
Bank
Ecuador.
