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Comparing Combined and Individual Chemical Pretreatments on Structural Degradation of Forest Wastes as a Source for Biogas Production
The recalcitrance nature of agricultural and forest wastes limits their enzymatic degradation and reduces biogas production. The objective of this study is to compare the effects of H 2 O 2 + NaOH and H 2 O 2 + H 3 PO 4 as combined pretreatments and H 3 PO 4 , NaOH and H 2 O 2 as individual ones on...
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| Published in: | Solid fuel chemistry 2023-08, Vol.57 (4), p.275-280 |
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| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Citations: | Items that this one cites |
| Online Access: | Get full text |
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| Summary: | The recalcitrance nature of agricultural and forest wastes limits their enzymatic degradation and reduces biogas production. The objective of this study is to compare the effects of H
2
O
2
+ NaOH and H
2
O
2
+ H
3
PO
4
as combined pretreatments and H
3
PO
4
, NaOH and H
2
O
2
as individual ones on lignin removal and structural changes of spruce wood wastes. The results showed that H
2
O
2
and NaOH with a lignin removal rate of 28.43 and 12.49%, respectively were the most powerful substances. The lignin removal power of H
3
PO
4
in combination with H
2
O
2
(11.20%) and NaOH (12.49%) increased compared to single H
3
PO
4
(1.58%). The Hydrogen Bond Intensity crystalline index of all pretreatments was lower than the untreated samples. The amount of Cross-Linked Lignin ratio in H
2
O
2
was higher than other pretreatments. Overall, although H
2
O
2
and NaOH were the most powerful pretreatments in lignin removal, respectively, when placed in a combined pretreatment, their degradation power (7.65%) was even lower than individual treatments for each. |
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| ISSN: | 0361-5219 1934-8029 |
| DOI: | 10.3103/S036152192304016X |