Fractal Characteristics of Colloid Deposition

Data Science Journal

Yasunori Kaneta¹  Yoshimi Seida²  Nobuto Oka³  Shuichi Iwata³  Zhiming Zhang³  Junjun Jia³ 

[1] Department of Quantum Engineering and Systems Science, The Graduate School of Engineering, The University of Tokyo, Japan, Tokyo, 113-8656;Nuclear Chemistry and Chemical Engineering Center (NUCEC), Institute of Research and Innovation, Japan, Chiba 277-0861;The Graduate School of Frontier Sciences, The University of Tokyo, Japan Chiba, 277-8563;

关键词: Colloid Deposition;    Fractal;    Fracture Medium;    DLVO Theory;    Heterogeneity;    Adsorption Isotherm;    Zeta Potential;    Contaminant Migration;   

DOI  :  10.2481/dsj.6.S206

来源: DOAJ

【 摘 要 】

It is widely accepted that colloids play an important role in the contaminant migration process at present. However, the colloid deposition structure on rock surfaces has scarcely been studied. In this paper, preliminary results for a fractal characterization for colloid deposition in saturated fractures are presented, which consider the pH value, ionic strength, and flow rate of the solution. Under different chemical conditions, deposition behavior obviously changed, and fractal analysis appears to be an effective tool to capture the evolution and general behavior of depositions. Scanning Electron Microscopy (SEM) is used to observe the colloidal growth on granite surfaces and to acquire the visual image on a detailed level. The images are analyzed for their mass fractal dimensions. The influence on colloid fractal deposition is discussed.

【 授权许可】

Unknown