Biobutanol has currently attracted considerable attention as an alternative biofuel to the petroleumderived
fuel due to several advantages including high energy content, low water absorption and easy
application to the existing gasoline infrastructure. However, its production has still faced many obstacles
to overcome including lack of energy-efficient butanol separation process from fermentation broth. To
solve this issue, the extraction behavior of butanol from aqueous media into a variety of imidazolium-
based ionic liquids (ILs) was investigated by liquid–liquid extraction. To understand the effect of ILs
properties, the solvent characteristics of ILs such as mutual solubility of feed solvent (water) and extraction
solvent (IL), distribution coefficient of butanol between water and IL, selectivity, and extraction
efficiency were correlated with hydrophobicity and polarity of ILs. The butanol distribution between ILs
and water strongly depends on the hydrophobicity of anions of ILs followed by the hydrophobicity of
cations of ILs. On the other hand, butanol extraction efficiency and selectivity depend on the polarity
of ILs. Considering extraction efficiency and selectivity, [Tf
N]-based ILs among the tested ILs showed
to be the best extract solvent for the recovery of butanol from aqueous media. Among the studied ILs,
[Omim][Tf
2
2
N] showedthe highest butanol distribution coefficient (1.939), selectivity (132) and extraction
efficiency (74%) at 323.15 K, respectively.
Biobutanol has currently attracted considerable attention as an alternative biofuel to the petroleumderived
fuel due to several advantages including high energy content, low water absorption and easy
application to the existing gasoline infrastructure. However, its production has still faced many obstacles
to overcome including lack of energy-efficient butanol separation process from fermentation broth. To
solve this issue, the extraction behavior of butanol from aqueous media into a variety of imidazolium-
based ionic liquids (ILs) was investigated by liquid–liquid extraction. To understand the effect of ILs
properties, the solvent characteristics of ILs such as mutual solubility of feed solvent (water) and extraction
solvent (IL), distribution coefficient of butanol between water and IL, selectivity, and extraction
efficiency were correlated with hydrophobicity and polarity of ILs. The butanol distribution between ILs
and water strongly depends on the hydrophobicity of anions of ILs followed by the hydrophobicity of
cations of ILs. On the other hand, butanol extraction efficiency and selectivity depend on the polarity
of ILs. Considering extraction efficiency and selectivity, [Tf
N]-based ILs among the tested ILs showed
to be the best extract solvent for the recovery of butanol from aqueous media. Among the studied ILs,
[Omim][Tf
2
2
N] showedthe highest butanol distribution coefficient (1.939), selectivity (132) and extraction
efficiency (74%) at 323.15 K, respectively.
การแปล กรุณารอสักครู่..
Biobutanol has currently attracted considerable attention as an alternative biofuel to the petroleumderived
fuel due to several advantages including high energy content, low water absorption and easy
application to the existing gasoline infrastructure. However, its production has still faced many obstacles
to overcome including lack of energy-efficient butanol separation process from fermentation broth. To
solve this issue, the extraction behavior of butanol from aqueous media into a variety of imidazolium-
based ionic liquids (ILs) was investigated by liquid–liquid extraction. To understand the effect of ILs
properties, the solvent characteristics of ILs such as mutual solubility of feed solvent (water) and extraction
solvent (IL), distribution coefficient of butanol between water and IL, selectivity, and extraction
efficiency were correlated with hydrophobicity and polarity of ILs. The butanol distribution between ILs
and water strongly depends on the hydrophobicity of anions of ILs followed by the hydrophobicity of
cations of ILs. On the other hand, butanol extraction efficiency and selectivity depend on the polarity
of ILs. Considering extraction efficiency and selectivity, [Tf
N]-based ILs among the tested ILs showed
to be the best extract solvent for the recovery of butanol from aqueous media. Among the studied ILs,
[Omim][Tf
2
2
N] showedthe highest butanol distribution coefficient (1.939), selectivity (132) and extraction
efficiency (74%) at 323.15 K, respectively.
การแปล กรุณารอสักครู่..