| Charactedzations of PSD Fractal of Porous Medium |
| |
| 作者姓名： | 黄国强 徐世民 李鑫钢 |
| |
| 作者单位： | [1]SchoolofChemicalEngineeringandTechnology,TianjinUniversity,Tianjin300072,China [2]NationalEngineeringResearchCenterforDistillationTechnology,TianjinUniversity,Tianjin300072,China |
| |
| 摘 要： | A volume-based method for measuring particle-size distribution (PSD) fractal dimensions of porous mediums was developed by employing laser size-analyzing technology. Compared with conventional approaches of using hydrometer or screen to determine PSD, this method can avoid calculation errors and measure smaller size-scale porous medium. In this paper the experimental porous mediums were brown soil, kaolin and sand soil. A micro-order of magnitude ( 10 ^-5 m) in particle-size interval could be shown in PSD results of brown soiland kaolin. The experiments indicated that brown soil had a nearly mono-fractal PSD character, while kaolinand sand soil showed multi-fractal PSD characters. By the adsorption isotherm experiments, the PSD fractal dimensions of the sand soil were also found to keep a linearly increasing relation with the linear adsorptive parameters of the soils in different intervals to adsorb benzene from aqueous solution.
|
| 关 键 词： | 多孔介质 粒度分布 分形维数 吸附性能 |
| 本文献已被 维普 等数据库收录！ |
|
