Determination of mass transfer coefficients for packing materials used in biofilters and biotrickling filters for air pollution control—2: Development of mass transfer coefficients correlations
Determination of mass transfer coefficients for packing materials used in biofilters and biotrickling filters for air pollution control—2: Development of mass transfer coefficients correlations
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DOI：
10.1016/j.ces.2007.10.021
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发表时间：
2008-02
影响因子：
4.7
通讯作者：
Seongyup Kim;M. Deshusses
中科院分区：
文献类型：
--
作者：
Seongyup Kim;M. Deshusses
提出了用于空气污染控制的生物过滤器和生物滴滤器中的填料的气膜传质系数（kGat，kGaw）和液膜传质系数（kLaw）的关联式。火山岩，聚氨酯泡沫立方体（PUF），鲍尔环，多孔陶瓷珠，多孔陶瓷拉西环，和各种堆肥木屑混合物被用作包装材料。气体和液体的速度的传质系数（kGat，kGaw，kLaw）实验获得的功能（见本文第1部分）使用修改Onda型方程相关。关联式有助于更好地理解气液速度对传质的敏感性，以及填料润湿的影响。每种填料对气液流速的函数不同，润湿性也不同，因此需要不同的关联式。大多数拟合数据落在实验值的±20%以内。
Correlations that allow determination of gas film mass transfer coefficients (kGat, kGaw) and liquid film mass transfer coefficients (kLaw) for packing materials used in biofilters and biotrickling filters for air pollution control are presented. Lava rock, polyurethane foam cubes (PUF), Pall rings, porous ceramic beads, porous ceramic Raschig rings, and various compost–woodchips mixtures were used as packing materials. The functionality of gas and liquid velocity on mass transfer coefficients (kGat,kGaw,kLaw) obtained experimentally (see Part 1 of this paper) was correlated using modified Onda-type equations. The correlation equations helped to better understand the sensitivity of gas and liquid velocities on mass transfer, and the effects of packing wetting. Each packing had a different functionality with gas and liquid velocity and different wetting property, hence different correlation equations were needed for the different packing materials. Most of the fitted data fell within ±20% of the experimental values.