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Abstract�� In the current industry,the xylose is manufactured by corncobs through hydrolysis,neutralization,twice decoloring with activated carbon,twice ion-exchange treatments and some other steps.But the process is costly and complex.In this paper,ultrafiltration was introduced into the production process of xylose.The effect on ultrafiltration treatment was analyzed,such as trans-membrane pressure,fluid flux,and temperature.The result showed the ultrafiltration treatment can cut down impurity and purify the xylose solution.In the ultrafiltration, gas sparging was used to deal with the tricky problems such as concentration polarization and membrane fouling.Lots of tests proved ultrafiltration can replace one decoloring with activated carbon,simplify the process,and can be applied to the production of xylose.

Keywords��

Received 2007-01-15; published 2007-01-15

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��ΰ;��ʮ��;.��ݳ��˷��ľ��̵�̽��[J]. ��ѧ��ҵ�빤��, 2007,24(1): 52-55

JI Wei,LI Shi-zhong.Application of Gas Sparging to the Production Process of Xylose by Ultrafiltration[J]. Chemcial Industry and Engineering, 2007,24(1): 52-55

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