Chemical and Thermal Characterization of Dilute Sulfuric Acid Hydrolysis of Coconut Dregs

Abstract:

Coconut dregs that are commonly used for animal feed have the potential for glucose production due to high carbohydrate content. Nevertheless, no study found on understanding the properties of this biomass. Hence, the main purpose of this paper was to propose appropriate operational conditions for the dilute sulfuric acid hydrolysis of coconut dregs and to investigate the chemical and thermal properties of coconut dregs. The biomass was hydrolyzed with 1% sulfuric acid (v/v) at different residence times (30 and 60 min) and temperatures (110, 120 and 130°C). Higher glucose produced (0.29 g/L ) was obtained when the coconut dregs were hydrolyzed at temperature of 130°C and a residence time of 60 min. FTIR spectra revealed the degradation of the lignocelluloses chemical structure. The changes of the chemical structure of hemicelluloses and cellulose after hydrolysis obviously showed that the degradation of the polymer of carbohydrate in coconut dregs to glucose. These results of degradation of lignocelluloses compound were consistent with those from the TGA. The result from TGA analysis revealed a reduction in thermal stability of the hydrolyzed fraction compared to raw state of coconut dregs.

• Periodical: Applied Mechanics and Materials (Volume 575)
• Pages: 148-153
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.575.148
• Online since: June 2014
• Authors: B. Normah*, Miradatul Najwa Mohd Rodhi, Musa Mohibah, Fuzieah Subari, I. Norazlina, Ku Halim Ku Hamid
• Keywords: Chemical Properties, Coconut Dregs, Dilute Sulfuric Acid Hydrolysis, Glucose Production, Thermal Properties

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