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椰壳活性炭吸附消除VOCs

更新时间:2014-07-17 13:53 来源:环境工程学报 作者: 阅读:2202 网友评论0
中文摘要:
      对一种椰壳活性炭对甲基丙烯酸甲酯的吸附消除行为进行了研究,重点考察了甲基丙烯酸甲酯的浓度、流速和吸附温度等条件以及水汽存在时对活性炭吸附行为的影响。结果表明,该颗粒活性炭对甲基丙烯酸甲酯有良好的吸附效果,甲基丙烯酸甲酯进口浓度和进气量的改变均会影响吸附饱和时间,导致其增加或减少。通过变温吸附实验确定降低环境温度对其吸附有促进作用。湿度为50%时吸附量相对干气饱和吸附量影响较小,说明该活性炭抗水汽能力较好。经多次重复再生实验,其饱和吸附量未见明显下降。
英文摘要:
      The adsorption of methyl methacrylate (MMA) on a coconut shell activated carbon (CSAC) was studied, and the effects of concentration, flow velocity, adsorption temperature and water vapor precondition which acted on the performance of VOCs adsorption were discussed. The results illustrated that the CSAC had a good capability of adsorbing MMA. With changing of MMA inlet concentration and quantity, the time of adsorption equilibrium would move forward or backward. Temperature swing adsorption experiment proved that reducing temperature would promote the adsorption performance of the CSAC. When the humidity was 50%, the adsorption behavior of the CSAC was not influenced obviousely, which indicated that the activated carbon had a good hydrophobicity. Coconut shell activated carbon was regenerated for many times, it still could remain its good capacity of adsorption.

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