Optimization of Wood Vinegar from Pyrolysis of Jelutung Wood (Dyera lowii Hook) by Using Response Surface Methodology

Abstract

The optimization of vinegar produced from 'jelutung' wood (Dyera lowii Hook) was investigated. The pyrolysis temperature and pyrolysis time are primary parameters for wood vinegar yield. Effects of pyrolysis temperature and pyrolysis time on wood vinegar yield were evaluated through experimental and statistical analysis. The objective of this study was to optimize experimental parameters to obtain the maximum wood vinegar yield from pyrolysis of jelutung wood by using response surface methodology (RSM). Important pyrolysis process parameters such as pyrolysis temperature (X1) and pyrolysis times (X2) were optimized. The regression equation obtained for the wood vinegar yield was Y = 30.24 + 2.11 X1 - 0.72 X2 - 2.10 X12 - 1.27 X22 - 0.53 X1.X2. The maximum wood vinegar yield of 30.97 % was obtained at the optimum parameters of pyrolysis temperature of 462.5 °C and pyrolysis temperature of 152 minutes.