Search: WFRF:(Shabestary Kiyan)
> (2020) >
Environmental impac...
Environmental impacts and limitations of third-generation biobutanol : Life cycle assessment of n-butanol produced by genetically engineered cyanobacteria
-
- Nilsson, Astrid (author)
- KTH,Skolan för kemi, bioteknologi och hälsa (CBH),Science for Life Laboratory, SciLifeLab
-
- Shabestary, Kiyan (author)
- KTH,Systembiologi,Science for Life Laboratory, SciLifeLab
-
- Brandao, Miguel (author)
- KTH,Hållbar utveckling, miljövetenskap och teknik
-
show more...
-
- Hudson, Elton P. (author)
- KTH,Science for Life Laboratory, SciLifeLab,Systembiologi
-
show less...
-
(creator_code:org_t)
- 2019-04
- 2020
- English.
-
In: Journal of Industrial Ecology. - : WILEY. - 1088-1980 .- 1530-9290. ; 24:1
- Related links:
-
https://urn.kb.se/re...
-
show more...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- Photosynthetic cyanobacteria have attracted interest as production organisms for third-generation biofuels, where sunlight and CO2 are used by microbes directly to synthesize fuel molecules. A particularly suitable biofuel is n-butanol, and there have been several laboratory reports of genetically engineered photosynthetic cyanobacteria capable of synthesizing and secreting n-butanol. This work evaluates the environmental impacts and cumulative energy demand (CED) of cyanobacteria-produced n-butanol through a cradle-to-grave consequential life cycle assessment (LCA). A hypothetical production plant in northern Sweden (area 1 ha, producing 5-85 m(3) n-butanol per year) was considered, and a range of cultivation formats and cellular productivity scenarios assessed. Depending on the scenario, greenhouse gas emissions (GHGe) ranged from 16.9 to 58.6 gCO(2)eq/MJ(BuOH) and the CED from 3.8 to 13 MJ/MJ(BuOH). Only with the assumption of a nearby paper mill to supply waste sources for heat and CO2 was the sustainability requirement of at least 60% GHGe savings compared to fossil fuels reached, though placement in northern Sweden reduced energy needed for reactor cooling. A high CED in all scenarios shows that significant metabolic engineering is necessary, such as a carbon partitioning of >90% to n-butanol, as well as improved light utilization, to begin to displace fossil fuels or even first- and second-generation bioethanol.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Naturresursteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Engineering (hsv//eng)
Keyword
- biofuel
- butanol
- cyanobacteria
- industrial ecology
- LCA
- metabolic engineering
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database