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PENGARUH PRETREATMENT TKKS MENGGUNAKAN IONIC LIQUIDS DILANJUTKAN HIDROLISIS DENGAN ASAM SULFAT ENCER UNTUK MENGHASILKAN GULA PEREDUKSI

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This study investigated the pretreatment of Oil Palm Empty Fruit Bunches (OPEFB) using ionic liquids (ILs) to understand their impact on reducing sugars produced during hydrolysis. The pretreatment of OPEFB was conducted with imidazolium chloride [IM][Cl] ILs at varying weights of 2.5 g, 5 g, 7.5 g, and 10 g, followed by hydrolysis with 2% dilute sulfuric acid. The lignin, cellulose, and hemicellulose contents were analyzed using the Chesson method, while the characterization of OPEFB before and after pretreatment was carried out using XRD and SEM-EDS. The reducing sugar content from hydrolysis was analyzed using the DNS method. The results showed that before pretreatment, the lignin, cellulose, and hemicellulose contents were 25.58%, 29.00%, and 11.08%, respectively. Pretreatment with 2.5 g ILs resulted in the largest reduction in lignin content from 25.58% to 12.4%, with the highest hemicellulose content being 25.68%. Meanwhile, using 10 g ILs showed the highest cellulose content of 52.12%. The crystal size of OPEFB after pretreatment decreased by 19.4379%. The surface structure of OPEFB after pretreatment became uneven, rough, more porous, and showed the presence of silica bodies. Hydrolysis of OPEFB pretreated with 2.5 g ILs showed the highest increase in reducing sugar content of 0.10498 mg/mL, compared to 0.00153 mg/mL in untreated OPEFB. These results indicate that pretreatment with ILs and heating reduces lignocellulose content, alters the crystalline structure of cellulose, changes the surface structure of OPEFB, and increases the hydrolysis capability using dilute sulfuric acid.

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Detail Information

Series Title

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Call Number

T1542892024

Publisher

Indralaya : Prodi Ilmu Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Sriwijaya., 2024

Collation

xvii, 52 hlm.; ilus.; tab, 29 cm.

Language

Indonesia

ISBN/ISSN

-

Classification

547.07

Content Type

Text

Media Type

unmediated

Carrier Type

other (computer)

Edition

-

Subject(s)

Kimia Organik
Prodi Ilmu Kimia

Specific Detail Info

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Statement of Responsibility

SEW

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