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

MUBAROQ, M HUSNIL and Hermansyah, Hermansyah (2024) PENGARUH PRETREATMENT TKKS MENGGUNAKAN IONIC LIQUIDS DILANJUTKAN HIDROLISIS DENGAN ASAM SULFAT ENCER UNTUK MENGHASILKAN GULA PEREDUKSI. Undergraduate thesis, Sriwiaya Univesity.

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Abstract

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.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: TKKS, Ionic Liquids, Pretreatment, Hidrolisis asam encer, Lignin.
Subjects: Q Science > QD Chemistry > QD415-436 Biochemistry
Divisions: 08-Faculty of Mathematics and Natural Science > 47201-Chemistry (S1)
Depositing User: M Husnil Mubaroq
Date Deposited: 07 Aug 2024 07:45
Last Modified: 07 Aug 2024 07:45
URI: http://repository.unsri.ac.id/id/eprint/154289

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