Abstract
The performance of green liquor pretreatment using Na2CO3 and Na2SO3 and its optimization for whole rice waste biomass (RWB) was investigated. Incubation of Na2CO3-Na2SO3 at a 1:1 ratio (chemical charge 10%) for 12% RWB at 100°C for 6h resulted in maximum delignification (58.2%) with significant glucan yield (88%) and total sugar recovery (545mg/g of RWB) after enzymatic hydrolysis. Recovery and reusability of the resulting chemical spent wash were evaluated to treat RWB along with its compatibility for enzymatic digestibility. Significant hydrolysis and lignin removal were observed for up to three cycles; however, further reuse of Na2CO3 and Na2SO3 lowered their performance. Significant 2,3-butanediol (BDO) was produced by Klebsiella pneumoniae KMK-05 with the RWB enzymatic hydrolysate from each pretreatment cycle. BDO yield achieved using RWB-derived sugars was similar to those using laboratory-grade sugars. This pretreatment strategy constitutes an ecofriendly, cost-effective, and practical method for utilizing lignocellulosic biomass.
| Original language | English |
|---|---|
| Pages (from-to) | 90-96 |
| Number of pages | 7 |
| Journal | Bioresource Technology |
| Volume | 205 |
| DOIs | |
| Publication status | Published - 2016 Apr 1 |
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Keywords
- 2,3-Butanediol
- NaCO-NaSO pretreatment
- Reusability of chemicals
- Rice waste biomass
ASJC Scopus subject areas
- Bioengineering
- Environmental Engineering
- Waste Management and Disposal
Cite this
Reutilization of green liquor chemicals for pretreatment of whole rice waste biomass and its application to 2,3-butanediol production. / Saratale, Ganesh D.; Jung, Moo Young; Oh, Min-Kyu.
In: Bioresource Technology, Vol. 205, 01.04.2016, p. 90-96.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Reutilization of green liquor chemicals for pretreatment of whole rice waste biomass and its application to 2,3-butanediol production
AU - Saratale, Ganesh D.
AU - Jung, Moo Young
AU - Oh, Min-Kyu
PY - 2016/4/1
Y1 - 2016/4/1
N2 - The performance of green liquor pretreatment using Na2CO3 and Na2SO3 and its optimization for whole rice waste biomass (RWB) was investigated. Incubation of Na2CO3-Na2SO3 at a 1:1 ratio (chemical charge 10%) for 12% RWB at 100°C for 6h resulted in maximum delignification (58.2%) with significant glucan yield (88%) and total sugar recovery (545mg/g of RWB) after enzymatic hydrolysis. Recovery and reusability of the resulting chemical spent wash were evaluated to treat RWB along with its compatibility for enzymatic digestibility. Significant hydrolysis and lignin removal were observed for up to three cycles; however, further reuse of Na2CO3 and Na2SO3 lowered their performance. Significant 2,3-butanediol (BDO) was produced by Klebsiella pneumoniae KMK-05 with the RWB enzymatic hydrolysate from each pretreatment cycle. BDO yield achieved using RWB-derived sugars was similar to those using laboratory-grade sugars. This pretreatment strategy constitutes an ecofriendly, cost-effective, and practical method for utilizing lignocellulosic biomass.
AB - The performance of green liquor pretreatment using Na2CO3 and Na2SO3 and its optimization for whole rice waste biomass (RWB) was investigated. Incubation of Na2CO3-Na2SO3 at a 1:1 ratio (chemical charge 10%) for 12% RWB at 100°C for 6h resulted in maximum delignification (58.2%) with significant glucan yield (88%) and total sugar recovery (545mg/g of RWB) after enzymatic hydrolysis. Recovery and reusability of the resulting chemical spent wash were evaluated to treat RWB along with its compatibility for enzymatic digestibility. Significant hydrolysis and lignin removal were observed for up to three cycles; however, further reuse of Na2CO3 and Na2SO3 lowered their performance. Significant 2,3-butanediol (BDO) was produced by Klebsiella pneumoniae KMK-05 with the RWB enzymatic hydrolysate from each pretreatment cycle. BDO yield achieved using RWB-derived sugars was similar to those using laboratory-grade sugars. This pretreatment strategy constitutes an ecofriendly, cost-effective, and practical method for utilizing lignocellulosic biomass.
KW - 2,3-Butanediol
KW - NaCO-NaSO pretreatment
KW - Reusability of chemicals
KW - Rice waste biomass
UR - http://www.scopus.com/inward/record.url?scp=84955305473&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84955305473&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2016.01.028
DO - 10.1016/j.biortech.2016.01.028
M3 - Article
VL - 205
SP - 90
EP - 96
JO - Bioresource Technology
JF - Bioresource Technology
SN - 0960-8524
ER -