Indonesian Journal of Fundamental and Applied Chemistry
Vol 3, No 3 (2018): October 2018

Purification of Crude Glycerol from Biodiesel By-product by Adsorption using Bentonite

Anzar, Erniati (Unknown)
Yusi, M. Syahirman (Unknown)
Bow, Yohandri (Unknown)

Article Info

Publish Date
11 Oct 2018


The production of glycerol from biodiesel by-product that was obtained from waste cooking oil has low purity. This crude glycerol contains impurities such as methanol, catalyst, soap and water. Analysis result shows that crude glycerol contains 67.7% water, 16.7% ash with density 1.1217 g/mL. The impurities were able to be adsorbed using bentonite which was activated in sulphuric acids 1.5 M and characterized by SEM-EDX. The purified glycerol after being treated with bentonite at 60 C for 75 minutes was fulfilled The SNI 06-1564-1995 requirement i.e. 89.5% glycerol, 4.3% water, 3.6% ash and density 1.2212 g/mL. From the experiment can be concluded the activated bentonite showed a capacity in adsorbing and removing impurities in waste cooking oil.

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Journal Info





Biochemistry, Genetics & Molecular Biology Chemistry Environmental Science


Indonesian Journal of Fundamental and Applied Chemistry (IJFAC) is an international research journal and invites contributions of original research articles as well as review articles in several areas of chemistry. The journal aims to publish refereed, high-quality research papers with significant ...