Chapter 19Metabolic Engineering of Solventogenic Clostridia for Butanol Production
Sang-Hyun Lee and Kyoung Heon Kim
Biological production of butanol has aroused interest because of global warming and the limited fossil fuels. Butanol is considered not only a biofuel superior to ethanol but also an important bulk chemical with a wide range of industrial uses [1]. The size of the chemical market of butanol was 5.9 billion US dollars in 2011 and is expected to grow to 9.4 billion US dollars by 2018 [2]. In addition, butanol has fuel properties similar to those of gasoline and can be a direct substitute for gasoline without requiring any alteration of combustion engines [3, 4]. Thus, compared with ethanol, butanol is much more compatible with ...
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