Effect of physical pretreatment on dilute acid hydrolysis of water hyacinth (Eichhornia crassipes)
| Autor: | A.B. Dayang Radiah, Zurina Zainal Abidin, Mohd Yusof Harun, Robiah Yunus |
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| Rok vydání: | 2010 |
| Předmět: |
Eichhornia crassipes
Environmental Engineering Spectroscopy Near-Infrared biology Eichhornia Renewable Energy Sustainability and the Environment Chemistry Hyacinth Sonication Hydrolysis Steaming Water Bioengineering General Medicine biology.organism_classification Botany Dry matter Sugar Waste Management and Disposal Acids Nuclear chemistry |
| Zdroj: | Bioresource technology. 102(8) |
| ISSN: | 1873-2976 |
| Popis: | Effects of different physical pretreatments on water hyacinth for dilute acid hydrolysis process (121 ± 3 °C, 5% H(2)SO(4), 60 min) were comparatively investigated. Untreated sample had produced 24.69 mg sugar/g dry matter. Steaming (121 ± 3 °C) and boiling (100 ± 3 °C) for 30 min had provided 35.9% and 52.4% higher sugar yield than untreated sample, respectively. The highest sugar yield (132.96 mg sugar/g dry matter) in ultrasonication was obtained at 20 min irradiation using 100% power. The highest sugar production (155.13 mg sugar/g dry matter) was obtained from pulverized samples. Hydrolysis time was reduced when using samples pretreated by drying, mechanical comminution and ultrasonication. In most methods, prolonging the pretreatment period was ineffective and led to sugar degradations. Morphology inspection and thermal analysis had provided evidences of structure disruption that led to higher sugar recovery in hydrolysis process. |
| Databáze: | OpenAIRE |
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