| Title of Article |
Two-stage thermophilic bio-hydrogen and
methane production from oil palm trunk
hydrolysate using Thermoanaerobacterium
thermosaccharolyticum KKU19 |
| Date of Acceptance |
24 September 2017 |
| Journal |
| Title of Journal |
International Journal of Hydrogen Energy |
| Standard |
ISI |
| Institute of Journal |
elsevier |
| ISBN/ISSN |
0360-3199 |
| Volume |
42 |
| Issue |
47 |
| Month |
November |
| Year of Publication |
2017 |
| Page |
28222-28232 |
| Abstract |
The two-stage process for thermophilic bio-hydrogen production followed by methane
production was examined on a hydrolysate obtained from oil palm trunk (OPT). The optimum
conditions for lime pretreatment and enzymatic hydrolysis of OPT was a lime
loading of 0.2 g Ca(OH)2/g-OPT, pretreatment time of 60 min, temperature of 121 C and
enzyme loading of 35 filter paper units/g-OPT. A maximum total reducing sugar yield of 473
mg/g-OPT was obtained, which was 2.7-fold higher than that of untreated OPT. The OPT
hydrolysate was used as a substrate for bio-hydrogen production by Thermoanaerobacterium
thermosaccharolyticum KKU19 in the first stage. The maximum hydrogen production potential
of 2179 mL H2/Lsubstrate was obtained under the optimum conditions of 16.5 g/L
initial substrate concentration, initial pH of 6.7 and 54.5 C, respectively. Acidic effluent
was used to produce methane in the second stage in which the methane yield of 272.4 mL/
g-chemical oxygen demand (COD) was achieved. The two-stage hydrogen and methane
production resulted in energy yield of 10.6 kJ/g-CODadded with 83% COD removal. |
| Keyword |
Anaerobic digestion; Biogas; Lime pretreatment; Enzymatic hydrolysis; Palm oil trunk; Energy yield |
| 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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