Techno-economics of carbon preserving butanol production using a combined fermentative and catalytic approach.
This paper presents a novel process for n-butanol production which combines a fermentation consuming carbon dioxide (succinic acid fermentation) with subsequent catalytic reduction steps to add hydrogen to form butanol. Process simulations in Aspen Plus have been the basis for the techno-economic analyses performed. The overall economy for the novel process cannot be justified, as production of succinic acid by fermentation is too costly. Though, succinic acid price is expected to drop drastically in a near future. By fully integrating the succinic acid fermentation with the catalytic conversion the need for costly recovery operations could be reduced. The hybrid process would need 22% less raw material than the butanol fermentation at a succinic acid fermentation yield of 0.7g/g substrate. Additionally, a carbon dioxide fixation of up to 13ktonnes could be achieved at a plant with an annual butanol production of 10ktonnes.
Division of Chemical Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden. Electronic address: robert.nilsson@ltu.se.
Robert
R
Nilsson
Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.
Fredric
F
Bauer
Division of Energy Science, Luleå University of Technology, SE-971 87 Luleå, Sweden.
Sennai
S
Mesfun
Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.
Christian
C
Hulteberg
Division of Energy Science, Luleå University of Technology, SE-971 87 Luleå, Sweden.
Joakim
J
Lundgren
SP Technical Research Institute of Sweden, P.O. Box 70, SE-891 22 Örnsköldsvik, Sweden.
Sune
S
Wännström
Division of Chemical Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden.
Ulrika
U
Rova
Division of Chemical Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden.
Kris Arvid
KA
Berglund
D000440:Butanols / Q000138:chemical synthesis* / Q000191:economics; D002384:Catalysis; D005285:Fermentation; D019802:Succinic Acid / Q000191:economics / Q000378:metabolism*
D000440:Butanols; D019802:Succinic Acid
Butanol; Fermentation; Lignocellulose; Process integration; Succinic acid