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首页> 外文期刊>Applied Surface Science >Volatile organic compounds adsorption onto neat and hybrid bacterial cellulose
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Volatile organic compounds adsorption onto neat and hybrid bacterial cellulose

机译：挥发性有机化合物吸附到纯净和杂合细菌纤维素上

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Adsorption dynamics of VOCs (volatile organic compounds) vapour from air streams onto fixed bed adsorbent were measured and simulated under various operation conditions. Isopropanol (IPA) and n-hexane (HEX) were selected as representatives of polar and nonpolar VOCs, whereas bacterial cellulose (BC) and BC incorporated with magnetite nanoparticles (M/BC), were tested as adsorbents. An experimental study emphasizing the influence of air superficial velocity (0.7 cm/s and 1.7 cm/s), operation temperature (30 degrees C and 40 degrees C), adsorbate and adsorbent type, on fixed bed saturation curves was conducted. Optimal adsorption performances evaluated in terms of saturation adsorption capacity were obtained for the adsorption of polar compound (IPA) onto M/BC composite (0.805 gig) and of nonpolar compound (HEX) onto neat BC (0.795 g/g), respectively, at high values of air velocity and operation temperature. A mathematical model including mass balance of VOC species, whose parameters were fitted based on experimental data, was developed in order to predict the fixed bed saturation curves. A2(3) statistical model indicating a significant increase in adsorption performances with process temperature was validated under the experimental conditions. (C) 2015 Elsevier B.V. All rights reserved.
机译：在各种操作条件下，测量并模拟了气流中VOC（挥发性有机化合物）蒸气在固定床吸附剂上的吸附动力学。选择异丙醇（IPA）和正己烷（HEX）作为极性和非极性VOC的代表，而掺有磁铁矿纳米颗粒（M / BC）的细菌纤维素（BC）和BC作为吸附剂进行了测试。进行了一项实验研究，强调了空气表观速度（0.7 cm / s和1.7 cm / s），操作温度（30摄氏度和40摄氏度），吸附物和吸附剂类型对固定床饱和曲线的影响。获得了以饱和吸附容量评估的最佳吸附性能，分别用于极性化合物（IPA）吸附到M / BC复合材料（0.805 gig）和非极性化合物（HEX）吸附到纯BC（0.795 g / g）上。高风速和工作温度。为了预测固定床饱和曲线，建立了包括VOC物质质量平衡的数学模型，并根据实验数据对其参数进行了拟合。在实验条件下验证了A2（3）统计模型，该模型表明吸附性能随工艺温度而显着增加。 （C）2015 Elsevier B.V.保留所有权利。

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