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首页> 外文期刊>Journal of Applied Polymer Science >A new type synthetic filter material for biofilter: Poly(vinyl alcohol)/peat composite bead
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A new type synthetic filter material for biofilter: Poly(vinyl alcohol)/peat composite bead

机译：一种新型生物滤池合成滤料：聚乙烯醇/豌豆复合珠

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In this study, a new type of poly(vinyl alcohol) (PVA)/peat composite bead was prepared and was proved suitable as a filter material in the biofiltration process. The composite bead is a porous spherical particle and has a diameter of 2.4-6.0 mm and a density of 0.69 kg/cm(3). It contains 3.25 mg N/g dry solid and 2.91 mg P/g dry solid. The equilibrium moisture content of the composite bead for adsorption and holding experiments is 50.5 and 66.8% by wet basis, respectively. The initial compression strength of the composite bead is 0.32 kg/cm(2). It has higher moisture holding capacity and compression strength than pig manure compost filter material. The adsorption behavior of ethyl acetate and composite bead follows the Freundlich adsorption isotherm. The composite bead has buffer capacity and could keep the filter bed at pH=6.9-7.2 during operating. The percentage of removed ethyl acetate was 99% for up to 33 days as the composite bead adsorbed nutrients. (C) 2003 Wiley Periodicals, Inc. [References: 17]
机译：在这项研究中，制备了一种新型的聚乙烯醇（PVA）/豌豆复合珠，并被证明适合用作生物过滤过程中的过滤材料。复合珠是一种多孔球形颗粒，直径为2.4-6.0 mm，密度为0.69 kg / cm（3）。它包含3.25 mg N / g干燥固体和2.91 mg P / g干燥固体。用于吸附和保持实验的复合珠的平衡水分含量以湿基计分别为50.5和66.8％。复合珠的初始压缩强度为0.32 kg / cm（2）。它比猪粪堆肥过滤材料具有更高的持水量和抗压强度。乙酸乙酯和复合珠的吸附行为遵循Freundlich吸附等温线。复合珠具有缓冲能力，并且可以在操作期间将滤床保持在pH = 6.9-7.2。当复合珠粒吸收营养物时，最多33天的乙酸乙酯去除率为99％。 （C）2003 Wiley Periodicals，Inc. [参考：17]

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