摘要：As an agricultural country, Indonesia has natural resources are very abundant , one of which is wood . Wood ash from household and industrial waste has not been used , whereas according to Pitman high potassium content . The solubility of potassium carbonate in high water , so effective when extracted with water . However, high humidity in Indonesia drying wood for fuel so low that allegedly affect the quality of the ash obtained . In this research, the extraction of wood ashes with water using a solvent system gradually many wing cross . The experimental study was conducted in a university laboratory Ahmad Dahlan , Yogyakarta . The procedure used is the extraction of wood ash 200 , 300 and 400 grams with 1000 ml of solvent water for 5 minutes using a glass beaker , filtering with the aid of a vacuum pump , and acidi alkalimetri analysis using 0.1 N HCl residual solids by filtration and then in water kontakkan again and so do the same thing 5 times . Raw materials derived from wood ash combustion for drying of the wood cutting industry and water used in the form aquadestilata . Extract wood ash derived from the combustion for drying small normality sawmill industry . The results of the analysis can be made curve that describes the operating line and curve logarithmic form of the equation of equilibrium in the form of linear equations . Moreover, it can be made a graph illustrating a series of 5 stages of operation which is a combination of single phased extraction .
