解吸
氧气
化学
水溶液
传质系数
传质
电解质
氢氧化钠
分析化学(期刊)
吸收(声学)
混合(物理)
下降(电信)
色谱法
吸附
材料科学
电极
有机化学
物理化学
复合材料
物理
电信
量子力学
计算机科学
作者
I. N. Seekkuarachchi,Takafumi Yamamoto,H. Kumazawa
标识
DOI:10.1080/009864490517278
摘要
ABSTRACT The process of continuous production of dissolved oxygen free water was investigated by means of desorption of dissolved oxygen into fine nitrogen bubbles generated in a novel motionless mixer named Ramond Supermixer® (RSM). The pressure drop across the mixer (ΔPSM) and the volumetric mass transfer coefficient (kL a) during the desorption of oxygen from water were measured for various combinations of process variables; liquid and gas velocities and number of mixing units. The kL a during absorption was smaller by less than approximately 6% than that during desorption. Specific gas-liquid interfacial areas (a) were measured by the chemical absorption method for a CO2-aqueous sodium hydroxide solution system. Such process characteristics as ΔPSM, kL a, and a were correlated with the process variables and compared with those available in the literature. To further confirm the mass transfer characteristics in RSM, the desorption of oxygen from aqueous electrolyte solutions was also investigated. All the correlations obtained for kL a during the desorption of oxygen from water and aqueous electrolyte solutions were compatible to a great higher extent. Keywords: DesorptionMotionless mixerVolumetric mass transfer coefficientSpecific interfacial areaDissolved oxygen Notes *multiple regression coefficient
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