Publication: Comparative Study of Three Chemical Pretreatments and Their Effects on the Structural Changes of Rice Straw and Butanol Production
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Issued Date
2020
Resource Type
File Type
application/pdf
ISSN
18772641
Other identifier(s)
2-s2.0-85062148208
Rights Holder(s)
Scopus
Bibliographic Citation
Waste and Biomass Valorization. Vol 11, No.6 (2020), p.2771-2781
Suggested Citation
Boonsombuti A., Trisinsub O., Luengnaruemitchai A. Comparative Study of Three Chemical Pretreatments and Their Effects on the Structural Changes of Rice Straw and Butanol Production. Waste and Biomass Valorization. Vol 11, No.6 (2020), p.2771-2781. doi:10.1007/s12649-019-00622-z Retrieved from: https://hdl.handle.net/20.500.14740/4538
Author(s)
Abstract
In this study, the optimal conditions for the ionic liquid pretreatment of rice straw by microwave irradiation was identified by Response Surface Methodology (RSM). The maximum level of sugar concentration of 19.59 g/L was derived when rice straw was pretreated at 162 °C for 48 min and further hydrolyzed by enzymatic saccharification. The comparison of chemical pretreatment was performed using ionic liquid, alkaline, and acid to evaluate the effectiveness and effect structural changes of rice straw. Nevertheless, the total sugar yield from this ionic liquid pretreatment was 13% lower than alkaline (NaOH) pretreatment. All hydrolysates from chemical pretreatment were subjected for use as a culture medium for Clostridium beijerinckii TISTR 1461 in acetone–butanol–ethanol (ABE) fermentation. The results suggested that residue ionic liquid affects microbial growth, so a detoxification step was cautiously considered. Additionally, using hydrolysate of the rice straw pretreated by NaOH as a substrate, isobutyraldehyde was found in the fermentation broth, suggesting that C. beijerinckii TISTR 1461 can produce isobutanol in proper conditions. © 2019, Springer Nature B.V.
Subject(s)
Acetone
Alkalinity
Butenes
Clostridium
Detoxification
Fermentation
Ionic liquids
Microwave irradiation
Saccharification
Sodium hydroxide
Abe fermentations
Chemical pre-treatment
Chemical pretreatments
Clostridium beijerinckii
Enzymatic saccharification
Ionic liquid pretreatment
Response surface methodology
Rice straws
Liquid sugar
Alkalinity
Butenes
Clostridium
Detoxification
Fermentation
Ionic liquids
Microwave irradiation
Saccharification
Sodium hydroxide
Abe fermentations
Chemical pre-treatment
Chemical pretreatments
Clostridium beijerinckii
Enzymatic saccharification
Ionic liquid pretreatment
Response surface methodology
Rice straws
Liquid sugar