SIMULATION OF CONTINUOUS BATCH EXTRACTION WITH THREE PHASE COUNTER CURRENT: Avocado seed OIL EXTRACTION USING N-HEXANE AND ISOPROPYL ALCOHOL SOLVENTS

Bambang Pramudono, Septian Ardi Widioko dan Wawan Rustyawan
Jurusan Teknik Kimia Fakultas Teknik UNDIP Semarang
Jl. Prof. Soedarto, SH, Tembalang, Semarang 50239, Telp.(024)7460058
Penulis korenspondensi: pramudono2004@yahoo.com

Abstract
The aim of the research is to study the yield and selectivity of avocado seed extraction using n-hexane and isopropyl alcohol (IPA) as solvent. Extraction was carried out by continuous system with three stages counter current batch simulation at 82oC (for n-hexane) and 69oC (for IPA solvent) during 2 hours, the material and solvent ratio is 20 gr/250 g. Yield of the research using n-hexane and IPA are 18,69% and 17,87%.. Both oil either using n-hexane or IPA solvent fulfills avocado seed oil specification. From the yield obtained that n-hexane is quantitatively better than IPA but the impurity content showed that IPA is qualitative better than n-hexane.
Keywords: avocado seed, extraction, yield, solvent