• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Separation and Purification Technology >Effect of channel geometry, degree of activation, relative humidity and temperature on the performance of binderless activated carbon monoliths in the removal of dichloromethane from air
【24h】

Effect of channel geometry, degree of activation, relative humidity and temperature on the performance of binderless activated carbon monoliths in the removal of dichloromethane from air

机译：通道几何形状，活化程度，相对湿度和温度对无粘结剂活性炭整料从空气中去除二氯甲烷性能的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This work addresses the adsorption of dichloromethane (DCM), as a model volatile organic compound (VOC) over activated carbon monoliths (ACM). Several binderless ACM have been prepared at MAST Carbon Ltd. with different channel geometries (square and regular hexagon), cell densities and degrees of activation. The influence of relative humidity (RH) and temperature, as most important atmospheric variables, on DCM adsorption over the ACM have been studied. The influence of the monolith geometric variables onto DCM adsorption has been experimentally proved and explained by the analysis of the mass transfer coefficients. Hexagonal channel monoliths present higher internal and external mass transfer coefficients and lower pressure drops than square ones. The influence of the degree of activation has been studied, both in equilibrium and dynamic vapour phase adsorption experiments. The variation of the degree of activation level from 23% to 40% increased the pore size of this materials leading to higher pore volumes and diffusivities, however DCM enthalpy of adsorption decreased due to confinements effects that are more important for smaller pores. RH and temperature decreased the adsorption capacities at breakthrough and saturation time. As main conclusion, hexagonal channel monoliths with low activation levels present the best properties on DCM adsorption in different atmospheric conditions.
机译：这项工作解决了二氯甲烷（DCM）的吸附，它是活性炭单块（ACM）上的模型挥发性有机化合物（VOC）。 MAST Carbon Ltd.已制备了几种无粘结剂ACM，它们具有不同的通道几何形状（正方形和正六边形），泡孔密度和活化度。研究了相对湿度（RH）和温度（最重要的大气变量）对ACM上DCM吸附的影响。整体几何参数对DCM吸附的影响已通过传质系数分析得到了实验证明和解释。与方形通道相比，六角形通道整体具有更高的内部和外部传质系数以及更低的压降。在平衡和动态气相吸附实验中都研究了活化程度的影响。活化程度从23％到40％的变化会增加这种材料的孔径，从而导致更高的孔体积和扩散率，但是由于限制作用（对于较小的孔而言更重要），DCM的吸附焓降低了。相对湿度和温度降低了穿透和饱和时间的吸附能力。作为主要结论，具有低活化水平的六角形通道整体结构在不同大气条件下均具有DCM吸附的最佳性能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号