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- W4241945947 abstract "Studies have been made of kraft cooking of gamma irradiated wood. Beech (Fagus crenata Blume) wood meal suspended in aqueous alkaline alcohol was irradiated up to 1.5 KGy (0.15 Mrad) with gamma rays from a Co-60 source in the presence or absence of oxygen. The irradiated wood meals were washed thoroughly with fresh water, air dried and cooked under the ordinary cooking conditions.The results are summarized as follows : (1) Pre-irradiation in aqueous alkali have negligible effect on kraft cooking.(2) In the case of ethanol addition (50 g/l), pre-irradiation in vacuo shows acceleration of delignification and stabilization of carbohydrates during kraft cooking. Cooked yield gain by pre-irradiation was about 1.2% in all over the range of delignification from 80 to 90%. Aqueous ethanol without alkali also shows positive but smaller effect than that with alkali.(3) Propanol, iso-propanol and butanol show positive but smaller effects than ethanol. However, methanol does not show any positive effect.(4) Irradiation in the presence of oxygen does not show any attractive effect on kraft cooking." @default.
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- W4241945947 date "1979-01-01" @default.
- W4241945947 modified "2023-09-30" @default.
- W4241945947 doi "https://doi.org/10.2524/jtappij.33.12_782" @default.
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