July 1, 2015 Thesis Open Access

Mihretab Mezgebu

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    "description": "<p>Growth in pulp and paper production entails massive felling of trees, which in turn leads to<br>\ndeforestation. Increasing competition for wood supplies coupled with gradually rising costs of<br>\nwood have generated renewed interest in the use of non-wood plant fibers for papermaking in<br>\nthe highly industrialized countries.<br>\nThe utilization of agricultural residues for the production of value-added products presents an<br>\ninnovative opportunity for sustainable resource management, provides additional income for<br>\nfarmers and contributes to the development of rural economies.<br>\nIn this study pulping of wheat straw was carried out by conventional soda-antraquinone (AQ)<br>\npulping under different conditions. The influence of soda concentration (10, 12 and 14% on<br>\nthe basis of dried wheat straw), cooking temperature (155,160 and 1650C) and cooking time<br>\n(20, 35 and 50 min) on pulp properties were studied. Results indicated that soda concentration<br>\nand cooking time had a significant influence on yield and kappa number.<br>\nHowever the best result with respect to yield and kappa number was obtained with 10% soda<br>\nconcentration with 20 min cooking time</p>", 
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