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Metal residues in macroalgae feedstock and implications for microbial fermentation

López I Losada, Raül LU orcid ; Owsianiak, Mikołaj ; Ögmundarson, Ólafur and Fantke, Peter (2020) In Biomass and Bioenergy 142.
Abstract
Macroalgae cultivation shows potential for the application as emerging feedstock for microbial fermentation to produce biochemicals. However, metal residues in macroalgae might affect the fermentation capacity of relevant microorganisms. This aspect is currently not considered when selecting macroalgae and microorganism species for microbial fermentation. To consider this aspect for selecting viable macroalgae and microorganism species, we link metal exposure in bioreactors from macroalgae residues to ecotoxicological test results for relevant microorganisms. Our results indicate that estimated bioreactor concentrations for most metals are below microorganism effect levels. For copper and hexavalent chromium, however, reactor... (More)
Macroalgae cultivation shows potential for the application as emerging feedstock for microbial fermentation to produce biochemicals. However, metal residues in macroalgae might affect the fermentation capacity of relevant microorganisms. This aspect is currently not considered when selecting macroalgae and microorganism species for microbial fermentation. To consider this aspect for selecting viable macroalgae and microorganism species, we link metal exposure in bioreactors from macroalgae residues to ecotoxicological test results for relevant microorganisms. Our results indicate that estimated bioreactor concentrations for most metals are below microorganism effect levels. For copper and hexavalent chromium, however, reactor concentrations might exceed relevant effect levels for at least some considered microorganism species. Adjusting water hardness in the bioreactor as well as selecting algae harvest location and macroalgae species might minimize metal exposure to fermenting microorganisms, in support of optimizing the biorefining process for biochemical production. (Less)
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Ecotoxicity, Macroalgae, Biorefinery, Metals, Microorganisms, Bioconcentration
in
Biomass and Bioenergy
volume
142
article number
105812
pages
10 pages
publisher
Elsevier
external identifiers
  • scopus:85092391800
ISSN
0961-9534
DOI
10.1016/j.biombioe.2020.105812
language
English
LU publication?
yes
id
4ea49ff6-9a84-4cb2-9d30-e13b567b0674
date added to LUP
2020-10-26 09:18:29
date last changed
2022-04-19 01:26:47
@article{4ea49ff6-9a84-4cb2-9d30-e13b567b0674,
  abstract     = {{Macroalgae cultivation shows potential for the application as emerging feedstock for microbial fermentation to produce biochemicals. However, metal residues in macroalgae might affect the fermentation capacity of relevant microorganisms. This aspect is currently not considered when selecting macroalgae and microorganism species for microbial fermentation. To consider this aspect for selecting viable macroalgae and microorganism species, we link metal exposure in bioreactors from macroalgae residues to ecotoxicological test results for relevant microorganisms. Our results indicate that estimated bioreactor concentrations for  most metals are  below microorganism effect levels. For  copper and  hexavalent chromium, however, reactor concentrations might exceed relevant effect levels for at least some considered microorganism species. Adjusting water hardness in the bioreactor as well as selecting algae harvest location and macroalgae species might minimize metal exposure to fermenting microorganisms, in support of optimizing the biorefining process for biochemical production.}},
  author       = {{López I Losada, Raül and Owsianiak, Mikołaj and Ögmundarson, Ólafur and Fantke, Peter}},
  issn         = {{0961-9534}},
  keywords     = {{Ecotoxicity; Macroalgae; Biorefinery; Metals; Microorganisms; Bioconcentration}},
  language     = {{eng}},
  month        = {{10}},
  publisher    = {{Elsevier}},
  series       = {{Biomass and Bioenergy}},
  title        = {{Metal residues in macroalgae feedstock and implications for microbial fermentation}},
  url          = {{http://dx.doi.org/10.1016/j.biombioe.2020.105812}},
  doi          = {{10.1016/j.biombioe.2020.105812}},
  volume       = {{142}},
  year         = {{2020}},
}