活性炭吸附性能与其粒度分布分形维数的关系研究

Study on Relationship between Adsorption Performance and Fractal Dimensions of Particle Size Distribution of Activated Carbon

采用数字显微系统和图像处理技术算得5种活性炭样品的粒度分布分形维数值,探讨了活性炭的吸附性能与其粒度分布分形维间的关系。结果表明,活性炭样品的平衡吸附量与粒度分布分形维数值均随细颗粒活性炭含量的增加而逐渐增大。进一步的研究表明,活性炭样品的平衡吸附量与其粒度分布分形维数值存在正相关关系。

In order to investigate the relationship between the adsorption performance of activated carbon and the fractal dimensions of particle size distribution, the particle size distribution fractal dimensions of 5 kinds of activa- ted carbon samples are measured by digital micrographie system and image analysis method. The results show that the amount of adsorbed methylene blue at equilibrium and the particle size distribution fractal dimensions of activated car- bon samples both increase with the increase of the amount of fine particles. The amount of adsorbed methylene blue at equilibrium present a positive correlation with the fraetal dimensions through further study.