Experimental Evaluation of Sugar Cane Bagasse Storage in Bales System

J. Lois–Correa*¹, A. Flores–Vela², D. Ortega–Grimaldo³, J. Berman–Delgado⁴

^1,2,3,4 Research Center of Applied Science and Advanced Technology (CICATA–IPN), National Polytechnic Institute, Unit Altamira, km.14.5 Road Tampico–Industrial Port Altamira, C.P. 89600 Altamira, Tamaulipas, México. *E–mail: joralois@yahoo.com

ABSTRACT

An experimental evaluation was carried out on three bagasse storage piles with the following characteristics: wet baled raw bagasse, wet baled depithed bagasse and pre–dried baled depithed bagasse. In each of these formerly mentioned alternatives, the storage time influence was analyzed on temperature profile, humidity behavior, granulometry and morphology, with and without mechanical treatment, solubility in hot water, NaOH and alcohol–benzene extractives. In the same way, the behavior of brightness in mechanical pulps produced from stored bagasse was studied. Storage losses were calculated for each alternative on the basis of obtained results and it was demonstrated that pre–dried bagasse as compared with wet bagasse storage, yields lower losses and better conservation of its characteristics.

Keywords: Bagasse, depithing, storage, bales system, cellulose, pentosans, lignin, losses.

RESUMEN

Una evaluación experimental se llevó a cabo en tres pilas de almacenamiento de bagazo con las siguientes características: bagazo integral empacado en húmedo, bagazo desmedulado empacado en húmedo y bagazo desmedulado empacado presecado. En cada una de las alternativas anteriormente mencionadas, se analizó la influencia del tiempo de almacenamiento sobre el perfil de temperatura, el comportamiento de la humedad, la granulometría y morfología, con y sin tratamiento mecánico, la solubilidad en agua caliente, en NaOH y Extractos Alcohol–Benceno. De la misma manera, se estudió el comportamiento de la brillantez en las pulpas mecánicas producidas a partir del bagazo almacenado. Sobre la base de los resultados obtenidos, se calculó para cada alternativa las pérdidas por almacenamiento y se demostró que el pre–secado de bagazo en comparación con los rendimientos de almacenamiento húmedo rinde menores pérdidas y una mejor conservación de sus características.

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