Abstract
The waste oil adsorbed on activated bleaching earth was evaluated as a raw material for biodiesel production. Alcoholysis reactions of waste oil extracted from activated bleaching earth using n-hexane were conducted by NaOH as catalysts. The reactions were performed at a temperature range from 50 to 60°C with catalyst (1-2% based on oil weight) at oil:alcohol molar ratios of 1:5-1:7. Based on optimization by response surface methodology, the critical alcoholysis conditions for 30 min reaction time giving maximum 85% methyl ester content were determined as follows: temperature 57.3°C, catalyst 2.1% (based on oil weight), and oil/methanol molar ratio 1/6.3.
| Original language | English |
|---|---|
| Pages (from-to) | 1812-1820 |
| Number of pages | 9 |
| Journal | Energy Sources, Part A: Recovery, Utilization and Environmental Effects |
| Volume | 32 |
| Issue number | 19 |
| DOIs | |
| Publication status | Published - 2010 |
Keywords
- activated bleaching earth
- alcoholysis
- optimization
- response surface methodology
- waste oil
