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Effect of physical pretreatment on dilute acid hydrolysis of water hyacinth (Eichhornia crassipes).

Awang Biak, Dayang Radiah and Yunus, Robiah and Zainal Abidin, Zurina and Harun, Mohd Yusof (2011) Effect of physical pretreatment on dilute acid hydrolysis of water hyacinth (Eichhornia crassipes). Bioresource Technology, 102 (8). pp. 5193-5199. ISSN 0960-8524

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Abstract

Effects of different physical pretreatments on water hyacinth for dilute acid hydrolysis process (121 ± 3 °C, 5% H2SO4, 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.

Item Type:Article
Keyword:Physical pretreatment; Water hyacinth; Dilute acid hydrolysis; Morphology.
Faculty or Institute:Faculty of Engineering
DOI Number:10.1016/j.biortech.2011.02.001
Altmetrics:http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.biortech.2011.02.001
ID Code:23213
Deposited By: Muizzudin Kaspol
Deposited On:05 Nov 2014 10:58
Last Modified:08 Oct 2015 13:53

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