Chemical and Materials Engineering Vol. 1(2), pp. 35 - 42
DOI: 10.13189/cme.2013.010202
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Asphalt Production from Asbuton Rock by Extraction Using Weak Acid

Ivan Mery Devianto*, llyin Abdi Budianta, Bambang Heru Susanto, Mohammad Nasikin
Chemical Engineering Department, Faculty of Engineering, University of Indonesia, Depok 16424


Utilization of natural asphalt in Indonesia has not been fully implemented. Asphalt can be obtained through extraction of asbuton rock using acid solution. Acid solution will dissolve the carbonate solids in asbuton to obtain asphalt. Weak acid solution can be used because it is economical and not too corrosive, such as formic acid, acetic acid, and carbonic acid. Forformic acid and acetic acid, batch extraction with agitation was performed at various temperature (25-95℃), acid concentration (1-10 M), and time. For carbonic acid, CO2 was injected into saline solution continuously and then ultrasound-assisted extraction was performed in batch system. Variations in the concentration of NaCl (0-0.5 M) and temperature (25-110℃) was performed in this solution. Amount of dissolved solids was influenced by all these variables. FTIR analysis and specific gravity testing indicated the presence of carbonate solids in asbuton rock and asphalt product. Formic acid and acetic acid is able to dissolve more solids than carbonic acid because carbonic acid is weaker than the others. However, the use of carbonic acid is more beneficial because CO2 can be regenerated from solution and then it can be used again in the next process. Asphalt from this process can be used to mix asphalt.

Asbuton, Extraction, Carbonate Solid, Weak Acid

Cite this paper
Ivan Mery Devianto , llyin Abdi Budianta , Bambang Heru Susanto , Mohammad Nasikin (2013). Asphalt Production from Asbuton Rock by Extraction Using Weak Acid. Chemical and Materials Engineering, 1 , 35 - 42. doi: 10.13189/cme.2013.010202.