Leonardo, Helen and Nugraha, Tutun (2011) Activation and Purification of Bentonite For The Treatment of Crude Palm Oil (CPO) as Vegetable Oil. Bachelor thesis, Swiss German University.

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Abstract

In cooking oil industry, Crude Palm Oil (CPO) requires bleaching process which is typically done using bleaching earth. The common bleaching earth used is activated bentonite. Currently, cooking oil industries in Indonesia import the activated bentonite in substantial amount for the bleaching process. Meanwhile, bentonite deposits in Indonesia are quite significant. In this research, bentonite obtained locally from the region of Leuwiliang (Bogor, West Java) was purified using ultrasonic with sodium hexametaphosphate (NaPO3)6 and water, and activated using acid reflux methods (H2SO4, 100 o C, 1 hour). During the activation, the bentonite was treated with different acid concentrations (1 M, 0.1 M and 0.01 M). The raw bentonite and treated bentonite were studied using XRD and XRF. The purification that was done using ultrasonic treatment removed the impurities from bentonite, particularly the quartz, and, hence, purified the montmorillonite. Bleaching power was initially studied using adsorption of methylene blue for optimation, followed by bleaching of CPO. The results showed that both the purified and nonpurified bentonite, activated with 0.1 molar H2SO4 at 1 hour duration had the highest bleaching capacity. This was confirmed by measuring the oil colour using spectrophotometer. In addition, the treated oil also showed substantial reduction of free fatty acid content (FFA), and also some reduction of peroxide number.

Item Type:	Thesis (Bachelor)
Uncontrolled Keywords:	Crude Palm Oil (CPO); Bentonite
Subjects:	Q Science > QP Physiology > QP144 Coconut oil S Agriculture > SB Plant culture > SB299 Palm Oil
Divisions:	Faculty of Life Sciences and Technology > Department of Food Technology
Depositing User:	Astuti Kusumaningrum
Date Deposited:	04 Mar 2021 15:14
Last Modified:	04 Mar 2021 15:15
URI:	http://repository.sgu.ac.id/id/eprint/1055

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