Abstract
Special studies and experiments have been carried out on the preparation of paper pulp from rice straw by using alkali agents such as NaOH, Na2 CO3, Na2 NO3 and CaO.It is observed that the reaction is most acting with NaOH, slightly less active with Na2 CO3, almost no reaction with Na2 SO3 alone but it becomes quite active with the addition of Na2 CO3 and no reaction with CaO. It is also further observed that the most suitable cooking agent for the preparation of rice straw pulp is Na2O or mixed agent of Na2 SO3 and Na2 CO3.The concentration of 8% in case of NaOH (against bone dry straw) or a mixed agent of 12% Na2 SO3 and 2% Na2 CO3 would produce sufficiently good color pulp of over 55% in whiteness.
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