Journal of Environmental Management, Год журнала: 2024, Номер 373, С. 123902 - 123902
Опубликована: Дек. 26, 2024
Язык: Английский
Journal of Environmental Management, Год журнала: 2024, Номер 373, С. 123902 - 123902
Опубликована: Дек. 26, 2024
Язык: Английский
Process Biochemistry, Год журнала: 2024, Номер 145, С. 261 - 287
Опубликована: Июль 2, 2024
Язык: Английский
Процитировано
18International Journal of Biological Macromolecules, Год журнала: 2024, Номер 261, С. 129838 - 129838
Опубликована: Фев. 2, 2024
Язык: Английский
Процитировано
12International Journal of Biological Macromolecules, Год журнала: 2024, Номер 266, С. 131333 - 131333
Опубликована: Апрель 3, 2024
Язык: Английский
Процитировано
12ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(11), С. 4690 - 4699
Опубликована: Март 4, 2024
In this work, the potential of a synthetic coculture and mixed methanotrophic consortium to synthesize poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) from renewable waste-based feedstocks was assessed batchwise. Methylocystis parvuscocultivated with Rhodococcus opacus Methylocystis-enriched culture previously grown on methane were subjected nutrient starvation in medium enriched valeric acid (30% w w–1 Ctot) or VFAs mixture containing acetic, propionic, butyric, acids (15% under CH4:O2 air atmosphere. For all test series, pH adjusted 7 after adding cosubstrates, negligible substrate consumption polymer production considered end point trial. Results showed that promoted PHBV accumulation both cultures regardless Interestingly, supported only presence methane. The highest contents for consortium, equal 73.7 ± 2.5% 49.6 13% w–1, respectively, obtained mixture. This study demonstrates suitability cocultures biobased cosubstrates sustainable biodegradable PHBV.
Язык: Английский
Процитировано
11The Science of The Total Environment, Год журнала: 2024, Номер 927, С. 172138 - 172138
Опубликована: Апрель 4, 2024
Polyhydroxyalkanoates (PHAs) are biobased and biodegradable polymers that could effectively replace fossil-based non-biodegradable plastics. However, their production is currently limited by the high costs, mainly due to costly carbon sources used, low productivity quality of materials produced. A potential solution lies in utilizing cheap renewable as primary feedstock during biological PHAs, paving way for a completely sustainable economically viable process. In this review, opportunities challenges related polyhydroxyalkanoates using methane volatile fatty acids (VFAs) substrates were explored, with focus on poly(3-hydroxybutyrate) poly(3-hydroxybutyrate-co-3-hydroxyvalerate). The discussion reports current knowledge about promising Type II methanotrophs, impact process parameters such limiting nutrients, CH4:O2 ratio temperature, type co-substrate its concentration. Additionally, strategies developed until now enhance PHA yields also discussed.
Язык: Английский
Процитировано
10International Journal of Polymer Science, Год журнала: 2024, Номер 2024, С. 1 - 17
Опубликована: Янв. 19, 2024
Polyhydroxyalkanoates
(PHAs)
are
biodegradable
and
biocompatible
polymers
that
produced
by
microorganisms
as
storage
materials
under
limited
nutrition
excess
carbon.
These
PHAs
have
been
found
to
be
ideal
for
replacing
synthetic
plastics
use
in
packaging
biomedical
applications.
In
this
study,
an
alkaliphilic
moderately
halophilic
bacterium
Halomonas
alkalicola
Ext
was
isolated
from
Lake
Simbi
Nyaima
western
Kenya
investigated
PHA
production.
Sudan
Black
B
Nile
Red
A
staining
showed
had
distinct
ability
accumulation
of
PHAs.
To
optimize
production,
the
grown
submerged
fermentation
varying
culture
conditions
different
sources
concentrations
carbon
nitrogen.
With
one-factor-at-a-time
(OFTA)
approach,
optimal
yields
were
obtained
after
72
hours
at
a
pH
10.0,
temperature
35°C,
2.5%
(w/v)
NaCl.
The
yielded
highest
biomass,
amounts
on
2%
galactose
0.1%
ammonium
sulfate
nitrogen,
respectively.
record
yield
0.071
g
g-1
with
titer
achieved
3.397
g/L
equivalent
41.8%
content.
Using
response
surface
methodology,
increased
1.5%
1.44
g/L,
while
content
improved
1.1-fold
45.57%.
Polymer
analysis
revealed
extracted
poly(3-hydroxybutyrate-co-3-hydroxyvalerate)
(PHBV)
(
id="M2">
Язык: Английский
Процитировано
9New Biotechnology, Год журнала: 2025, Номер unknown
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
1International Journal of Biological Macromolecules, Год журнала: 2024, Номер 277, С. 134201 - 134201
Опубликована: Июль 26, 2024
Язык: Английский
Процитировано
5Journal of Cleaner Production, Год журнала: 2024, Номер 441, С. 140801 - 140801
Опубликована: Янв. 23, 2024
Язык: Английский
Процитировано
4The Science of The Total Environment, Год журнала: 2024, Номер 929, С. 172599 - 172599
Опубликована: Апрель 22, 2024
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) is a biobased and biodegradable polymer that could efficiently replace fossil-based plastics. However, its widespread deployment slowed down by the high production cost. In this work, techno-economic assessment of process for producing poly(3-hydroxybutyrate-co-3-hydroxyvalerate) from low-cost substrates, such as methane valeric acid derived anaerobic digestion organic wastes, proposed. Several strategies cost abatement, use mixed consortium line reagent recycling during downstream, were adopted. Different scenarios in terms production, 100 to 100,000 t/y, analysed, and, each case, effect reactor volume (small, medium large size) on selling price was assessed. addition, biomass concentration also considered. Results show minimum plant with t/y capacity, accounting 18.4 €/kg, highly influenced since it can be reduced up 8.6 €/kg increasing total suspended solids 5 30 g/L, This adjustment aligns breakeven point PHBV reported average commercial price.
Язык: Английский
Процитировано
3