| Title of Article |
Statistical optimization of dilute sulfuric acid of cassava stem by response surface methodology for cellulosic ethanol production |
| Date of Acceptance |
12 August 2014 |
| Journal |
| Title of Journal |
Korean Journal of Chemical Engineering |
| Standard |
ISI |
| Institute of Journal |
Springer |
| ISBN/ISSN |
0256-1115 (print version), 1975-7220 (electronic version) |
| Volume |
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| Issue |
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| Month |
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| Year of Publication |
2014 |
| Page |
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| Abstract |
This work studied the statistical optimization of dilute sulfuric acid hydrolysis
(H2SO4) of two-stage pretreated cassava stem using Response Surface Methodology to obtain
the hydrolysate containing high reducing sugar and low inhibitor concentrations.
The optimum hydrolysis conditions that resulted in the highest total reducing sugar yield
were H2SO4 concentration of 0.20 M, ratio of acid volume to sample of 16.71 mL/g and
hydrolysis time for 90 min. These optimum conditions allowed obtaining a hydrolysate rich
in reducing sugar, with a yields up to 67.37%. Conversely, inhibitors including furfural,
5-hydroxymethylfurfural, acetic acid and phenolic compounds were detected at very low
concentrations.The fermentation of the hydrolysate resulted in an ethanol yield of 22.58
g/100 g substrate corresponding to a theoretical ethanol yield of 84.41%. The results
demonstrate that the hydrolysate under optimum conditions containing highly fermentable sugar and low inhibitor concentrations is a promising source for high yield cellulosic ethanol
production. |
| Keyword |
Cassava stem, Dilute sulfuric acid hydrolysis, Response Surface Methodology, Reducing sugar, Cellulosic ethanol |
| Author |
|
| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ได้รับการตอบรับให้ตีพิมพ์ |
| Level of Publication |
นานาชาติ |
| citation |
true |
| Part of thesis |
true |
| ใช้สำหรับสำเร็จการศึกษา |
ไม่เป็น |
| Attach file |
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| Citation |
0
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