title: Biological butanol production from microalgae-based biodiesel residues by Clostridium acetobutylicum.
abstract: This study conducted batch experiments to evaluate the potential of butanol production from microalgae biodiesel residues by Clostridium acetobutylicum. The results indicated that with 90 g/L of glucose as the sole substrate the highest butanol yield of 0.2 g/g-glucose was found, but the addition of butyrate significantly enhanced the butanol yield. The highest butanol yield of 0.4 g/g-glucose was found with 60 g/L of glucose and 18 g/L of butyrate. Using microalgae biodiesel residues as substrate, C. acetobutylicum produced 3.86 g/L of butanol and achieved butanol yield of 0.13 g/g-carbohydrate via ABE fermentation, but the results indicated that approximately one third of carbohydrate was not utilized by C. acetobutylicum. Biological butanol production from microalgae biodiesel residues can be possible, but further research on fermentation strategies are required to improve production yield.
authors.affiliation: Department of Environmental Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan.
authors.forename: Hai-Hsuan
authors.initials: HH
authors.lastname: Cheng
authors.affiliation: Department of Environmental Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan; Sustainable Environment Research Laboratory (SERL), National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan; Research Center for Energy Technology and Strategy (RCETS), National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan. Electronic address: whang@mail.ncku.edu.tw.
authors.forename: Liang-Ming
authors.initials: LM
authors.lastname: Whang
authors.affiliation: Department of Environmental Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan.
authors.forename: Kun-Chi
authors.initials: KC
authors.lastname: Chan
authors.affiliation: Department of Environmental Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan.
authors.forename: Man-Chien
authors.initials: MC
authors.lastname: Chung
authors.affiliation: Department of Environmental Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan.
authors.forename: Shu-Hsien
authors.initials: SH
authors.lastname: Wu
authors.affiliation: Department of Environmental Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan.
authors.forename: Cheng-Pin
authors.initials: CP
authors.lastname: Liu
authors.affiliation: Department of Environmental Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan.
authors.forename: Shih-Yuan
authors.initials: SY
authors.lastname: Tien
authors.affiliation: Department of Environmental Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan.
authors.forename: Shan-Yuan
authors.initials: SY
authors.lastname: Chen
authors.affiliation: Research Center for Energy Technology and Strategy (RCETS), National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan; Department of Chemical Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan.
authors.forename: Jo-Shu
authors.initials: JS
authors.lastname: Chang
authors.affiliation: Department of Environmental Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan; Sustainable Environment Research Laboratory (SERL), National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan; Research Center for Energy Technology and Strategy (RCETS), National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan.
authors.forename: Wen-Jhy
authors.initials: WJ
authors.lastname: Lee
mesh_terms: D056804:Biofuels; D000440:Butanols / Q000378:metabolism*; D002087:Butyrates / Q000494:pharmacology; D046969:Clostridium acetobutylicum / Q000187:drug effects / Q000378:metabolism*; D005285:Fermentation / Q000187:drug effects; D005947:Glucose / Q000494:pharmacology; D006868:Hydrolysis; D058086:Microalgae / Q000187:drug effects / Q000378:metabolism*; D014866:Waste Products
chemical_list: D056804:Biofuels; D000440:Butanols; D002087:Butyrates; D014866:Waste Products; D005947:Glucose
keywords: ABE fermentation; Butyrate; Clostridium acetobutylicum; Microalgae