ASAE pulping of wheat straw (Triticum aestivum L.)

In this study, optimum ASAE (alkali-sulfide-anthraquinone-ethanol) pulping conditions of wheat straw were determined. To this end, impregnation temper ature, time to impregnation temperature, impregnation time, Na2SO3/NaOH rat io, anthraquinone %, ethanol %, were held constant, as follows: 115 degrees , 35 min., 4/1, 0.1% and 50% respectively; other parameters were varied at three levels, as follows: Na,SO,: 12%, 14%, 16%; maximum temperature: 130 d egrees, 150 degrees, 170 degrees and cooking time: 60 min., 90 min., 120 mi n. As a result of statistical evaluation of the data obtained, optimum pulp ing conditions were determined as follows: Na2CO3: 14%, cooking time: 120 m in., maximum temperature: 150 degrees, 170 degrees, Na2CO3/NaOH ratio: 4/1, ethanol %: 50%, anthraquinone: 0.1%, liquor to straw ratio: 5/1.