Page 34 - Kutnar, Andreja, et al., eds., 2015. Proceedings of the 1st COST Action FP1307 International Conference - Life Cycle Assessment, EPDs, and modified wood. University of Primorska Press, Koper.
P. 34
e
cycle
assessment
of
a
novel
tannin-‐boron
association
for
wood
protection
Jin-‐Bo
HU1,2,
Campbell
Skinner3,
Graham
Ormondroyd3,
Gianluca
Tondi4,
Antonio
Pizzi5,
Marie-‐France
Thevenon1
1
Research
Unit
BIOWooEB,
CIRAD,
TA/B
114/16,
34398
Montpellier
Cedex
5,
France
2
College
of
Material
Science
and
Engineering,
Central
South
University
of
Forestry
and
Technology,
Shaoshan
South
Road,
No.
498,
Changsha,
Hunan,
410004,
China
3
BioComposites
Centre,
Bangor
University,
Bangor,
Gwynedd,
Wales
LL57
2UW,
UK
4
Forest
Product
Technology
&
Timber
Construction
Department,
Salzburg
University
of
Applied
Sciences,
Marktstraße
136a,
Kuchl,
5431,
Austria
5
LERMAB,
University
of
Lorraine,
27
rue
Philippe
Séguin,
CS
60036,
88026
Epinal
Cedex
9,
France
Keywords:
LCA,
Tannin-‐boron
preservative,
Landscaping
materials,
Treated
timber,
Low-‐
environmental
impact
Boron
compounds
remain
in
the
wood
preservation
field
and
present
many
advantages.
They
are
also
readily
leachable
from
modified
wood
and
several
methods
have
been
studied
to
fix
boron
compounds
for
use
in
outdoor
exposures
(Obanda
et
al.
2008).
Of
these
studies,
associations
between
tannins
and
boron
(TB)
in
the
form
of
boric
acid
appear
to
be
of
interest.
These
TB
associations
allow
the
use
of
boron
at
very
low
levels
(in
compliance
with
EU
restrictions,
2008/58/EC)
and
limit
boron
leaching
which
maintains
biological
resistance
and
fire
retardant
properties
(Thevenon
et
al.
2009,
Tondi
et
al.
2012).
As
a
consequence,
TB
wooden
products
present
an
extended
service
life
compared
to
boron
compounds
alone
and
were
designed
to
be
environmentally-‐friendly
wood
protection
systems.
Until
now
the
TB
products
have
been
evaluated
from
a
technical
point
of
view
and
not
for
their
potential
environmental
impact.
LCA’s
were
performed
on
tannin-‐boron
preservative
products
as
well
as
several
industrial
preservative-‐treated
timbers
and
concrete
used
in
landscaping.
Cr-‐containing
inorganic
salt
and
an
alkaline
copper
quaternary
preservative
formulation,
as
well
as
concrete,
have
been
used
as
referential
materials
to
compare
the
environmental
footprint
with
the
tannin-‐boron
treated
system.
A
model
was
created
with
life
cycle
stages
used
to
calculate
inputs
and
outputs
during
raw
material
extraction,
supplier
transportation,
manufacturing
process,
distribution,
disposal
transportation
and
processing.
Tannin
production
data
were
based
on
Vieira
et
al.
(2011).
However,
the
extracted
tannin
in
the
extraction
yield,
the
inorganic
salt,
and
the
process
applied
are
not
perfectly
comparable
with
the
extraction
conditions
industrially
applied
to
Mimosa
(Acacia
mearnsii)
extract
which
is
the
major
constituent
of
the
TB
formulations.
The
latter
is
22
cycle
assessment
of
a
novel
tannin-‐boron
association
for
wood
protection
Jin-‐Bo
HU1,2,
Campbell
Skinner3,
Graham
Ormondroyd3,
Gianluca
Tondi4,
Antonio
Pizzi5,
Marie-‐France
Thevenon1
1
Research
Unit
BIOWooEB,
CIRAD,
TA/B
114/16,
34398
Montpellier
Cedex
5,
France
2
College
of
Material
Science
and
Engineering,
Central
South
University
of
Forestry
and
Technology,
Shaoshan
South
Road,
No.
498,
Changsha,
Hunan,
410004,
China
3
BioComposites
Centre,
Bangor
University,
Bangor,
Gwynedd,
Wales
LL57
2UW,
UK
4
Forest
Product
Technology
&
Timber
Construction
Department,
Salzburg
University
of
Applied
Sciences,
Marktstraße
136a,
Kuchl,
5431,
Austria
5
LERMAB,
University
of
Lorraine,
27
rue
Philippe
Séguin,
CS
60036,
88026
Epinal
Cedex
9,
France
Keywords:
LCA,
Tannin-‐boron
preservative,
Landscaping
materials,
Treated
timber,
Low-‐
environmental
impact
Boron
compounds
remain
in
the
wood
preservation
field
and
present
many
advantages.
They
are
also
readily
leachable
from
modified
wood
and
several
methods
have
been
studied
to
fix
boron
compounds
for
use
in
outdoor
exposures
(Obanda
et
al.
2008).
Of
these
studies,
associations
between
tannins
and
boron
(TB)
in
the
form
of
boric
acid
appear
to
be
of
interest.
These
TB
associations
allow
the
use
of
boron
at
very
low
levels
(in
compliance
with
EU
restrictions,
2008/58/EC)
and
limit
boron
leaching
which
maintains
biological
resistance
and
fire
retardant
properties
(Thevenon
et
al.
2009,
Tondi
et
al.
2012).
As
a
consequence,
TB
wooden
products
present
an
extended
service
life
compared
to
boron
compounds
alone
and
were
designed
to
be
environmentally-‐friendly
wood
protection
systems.
Until
now
the
TB
products
have
been
evaluated
from
a
technical
point
of
view
and
not
for
their
potential
environmental
impact.
LCA’s
were
performed
on
tannin-‐boron
preservative
products
as
well
as
several
industrial
preservative-‐treated
timbers
and
concrete
used
in
landscaping.
Cr-‐containing
inorganic
salt
and
an
alkaline
copper
quaternary
preservative
formulation,
as
well
as
concrete,
have
been
used
as
referential
materials
to
compare
the
environmental
footprint
with
the
tannin-‐boron
treated
system.
A
model
was
created
with
life
cycle
stages
used
to
calculate
inputs
and
outputs
during
raw
material
extraction,
supplier
transportation,
manufacturing
process,
distribution,
disposal
transportation
and
processing.
Tannin
production
data
were
based
on
Vieira
et
al.
(2011).
However,
the
extracted
tannin
in
the
extraction
yield,
the
inorganic
salt,
and
the
process
applied
are
not
perfectly
comparable
with
the
extraction
conditions
industrially
applied
to
Mimosa
(Acacia
mearnsii)
extract
which
is
the
major
constituent
of
the
TB
formulations.
The
latter
is
22
