Fig. 6From: Optimization of ethanol-extracted lignin from palm fiber by response surface methodology and preparation of activated carbon fiber for dehumidificationEffects of different parameters on the yield of lignin extraction from palm fibers using ethanol: interaction effects of the a extraction time and reaction temperature, b extraction time and ethanol concentration, c extraction time and solid/liquid ratio, d reaction temperature and ethanol concentration, e reaction temperature and solid/liquid ratio, and f ethanol concentration and solid/liquid ratioBack to article page