| Title of Article |
Direct integration of CSTR-UASB reactors for two-stage hydrogen and methane production from sugarcane syrup |
| Date of Acceptance |
17 July 2016 |
| Journal |
| Title of Journal |
International Journal of Hydrogen Energy |
| Standard |
ISI |
| Institute of Journal |
Elsvier |
| ISBN/ISSN |
0360-3199 |
| Volume |
|
| Issue |
|
| Month |
|
| Year of Publication |
2016 |
| Page |
|
| Abstract |
This study attempted to directly integrate a continuous stirred tank reactor (CSTR) with an
up-flow anaerobic sludge blanket (UASB) reactor for two-stage hydrogen and methane
production. CSTR was used to produce hydrogen from a 25 g-COD/L sugarcane syrup. The
hydrogenogenic effluent from CSTR was directly fed to UASB for methane production. The
working volumes of CSTR and UASB reactors were 1 and 24 L, respectively. Optimization of
hydraulic retention times (HRT) for two-stage hydrogen and methane production after an
integration were examined. A maximum hydrogen production rate of 17.5 L/L.d and
methane production rate of 2.25 L/L.d were achieved at optimal HRTs of 3 h in the CSTR
and 3 d in the UASB with a total energy production rate of 270 kJ/L.d. The two-stage reactors
performed well in producing hydrogen and methane over 200 days with a total COD
removal of 97.5%. The natural microflora in sugarcane syrup was greatly affected by HRT
but HRT did not affect the archaea community. The volatile fatty acids to alkalinity ratio in
the UASB reactor was below the critical value of 0.4 at every HRT, indicating stability of a
long term methane production process with direct feeding of non-pretreated hydrogenogenic
effluent. |
| Keyword |
Two-stage, Sugarcane, Biogas |
| Author |
|
| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
false |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Publication
Journal Publication
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