Editing Butanol (section)

==Biobutanol==
{{Main|Butanol fuel}}
Butanol (''n''-butanol or isobutanol) is a potential [[biofuel]] ([[butanol fuel]]).<ref>{{cite journal|display-authors=etal|last1=Sampa Maiti |title=Quest for sustainable bio‐production and recovery of butanol as a promising solution to fossil fuel |journal=Energy Research |date=Dec 10, 2015 |volume=40 |issue=4 |pages=411–438 |doi=10.1002/er.3458|doi-access=free }}</ref> Butanol at 85 percent concentration can be used in cars designed for gasoline (petrol) without any change to the engine (unlike 85% ethanol), and it contains more energy for a given volume than ethanol and almost as much as gasoline, and a vehicle using butanol would return fuel consumption more comparable to gasoline than ethanol. Butanol can also be added to diesel fuel to reduce soot emissions.<ref>{{cite journal | author = Antoni, D. |author2=Zverlov, V. |author3=Schwarz, W. H. |name-list-style=amp | year = 2007 | title = Biofuels from Microbes | journal = Applied Microbiology and Biotechnology | volume = 77 |issue=1 | pages = 23–35 | doi=10.1007/s00253-007-1163-x | pmid = 17891391|s2cid=35454212 }}</ref> Photoautotrophic microorganisms, like cyanobacteria, can be engineered to produce 1-butanol indirectly from {{CO2}} and water.<ref>Liu, X., Miao, R., Lindberg, P., & Lindblad, P. (2019). Modular engineering for efficient photosynthetic biosynthesis of 1-butanol from CO 2 in cyanobacteria. Energy & Environmental Science, 12(9), 2765-2777.</ref>