Bioethanol production using carbohydrate-rich microalgae biomass as feedstock

► A sugar-rich Chlorella vulgaris FSP-E strain was used as feedstock for ethanol production. ► Enzymatic and acidic hydrolyses can efficiently saccharify the microalgae biomass. ► SHF & SSF processes produced ethanol from the microalgae biomass with high yield. ► SSF process gave better ethanol...

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Vydané v:Bioresource technology Ročník 135; s. 191 - 198
Hlavní autori: Ho, Shih-Hsin, Huang, Shu-Wen, Chen, Chun-Yen, Hasunuma, Tomohisa, Kondo, Akihiko, Chang, Jo-Shu
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: England Elsevier Ltd 01.05.2013
Predmet:
Acid hydrolysis
analysis
Biofuels
Biofuels - microbiology
Biomass
biosynthesis
Biotechnology
Biotechnology - methods
Carbohydrate
Carbohydrate Metabolism
Carbohydrate Metabolism - drug effects
Carbohydrates
Carbohydrates - biosynthesis
Chlorella vulgaris
Chlorella vulgaris - drug effects
Chlorella vulgaris - growth & development
Chlorella vulgaris - metabolism
drug effects
Enzymatic hydrolysis
Ethanol
Ethanol - metabolism
ethanol production
Ethyl alcohol
Feedstock
feedstocks
fermentation
Fermentation - drug effects
Glucose
Glucose - biosynthesis
Glucosidases
Glucosidases - metabolism
growth & development
Hydrolysates
Hydrolysis
Hydrolysis - drug effects
Lipids
Lipids - analysis
metabolism
methods
Microalgae
Microalgae - drug effects
Microalgae - growth & development
Microalgae - metabolism
microbiology
Nitrates
Nitrates - analysis
Nitrogen
Nitrogen - pharmacology
pharmacology
Proteins
Proteins - analysis
sulfuric acid
Sulfuric Acids
Sulfuric Acids - pharmacology
Time Factors
Zymomonas
Zymomonas - drug effects
Zymomonas - metabolism
Acid hydrolysis
Microalgae
Carbohydrate
Chlorella vulgaris
Enzymatic hydrolysis
ISSN:0960-8524, 1873-2976, 1873-2976
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Shrnutí:► A sugar-rich Chlorella vulgaris FSP-E strain was used as feedstock for ethanol production. ► Enzymatic and acidic hydrolyses can efficiently saccharify the microalgae biomass. ► SHF & SSF processes produced ethanol from the microalgae biomass with high yield. ► SSF process gave better ethanol production performance with a 92% theoretical yield. This study aimed to evaluate the potential of using a carbohydrate-rich microalga Chlorella vulgaris FSP-E as feedstock for bioethanol production via various hydrolysis strategies and fermentation processes. Enzymatic hydrolysis of C. vulgaris FSP-E biomass (containing 51% carbohydrate per dry weight) gave a glucose yield of 90.4% (or 0.461g (gbiomass)−1). The SHF and SSF processes converted the enzymatic microalgae hydrolysate into ethanol with a 79.9% and 92.3% theoretical yield, respectively. Dilute acidic hydrolysis with 1% sulfuric acid was also very effective in saccharifying C. vulgaris FSP-E biomass, achieving a glucose yield of nearly 93.6% from the microalgal carbohydrates at a starting biomass concentration of 50gL−1. Using the acidic hydrolysate of C. vulgaris FSP-E biomass as feedstock, the SHF process produced ethanol at a concentration of 11.7gL−1 and an 87.6% theoretical yield. These findings indicate the feasibility of using carbohydrate-producing microalgae as feedstock for fermentative bioethanol production.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0960-8524
1873-2976
1873-2976
DOI:10.1016/j.biortech.2012.10.015