articleInternational Journal for Numerical and Analytical Methods in GeomechanicsJan 11, 2025Closed access

Granular Thermodynamic Migration Model Suitable for High‐Alkalinity Red Mud Filtrates and Test Verification

BBBing BaiHWHaiyan WuQNQingke NieJLJingjing LiuXJXiangxin Jia

Beijing Jiaotong University · Chengdu Surveying Geotechnical Research Institute

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Abstract

ABSTRACT A theoretical model of the migration process of high‐alkalinity red mud particles in porous media was derived from granular thermodynamics, complying with the complementary motion process of two‐phase flows (i.e., hydroxide ions and red mud powder). From the perspective of energy dissipation provoked by particle migration and molecular thermal motion, a migration model of hydroxide ions and suspended particles under mixed conditions was established. This model naturally considers the complex adsorption/desorption process between hydroxide ions (or red mud particles) and a porous medium solid matrix, as well as between hydroxide ions and red mud particles. Moreover, the model reveals the dynamic…

Citation impact

109
total citations
FWCI
60.52
Percentile
100%
References
41
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Authors

5

Topics & keywords

Topics
Keywords
  • Alkalinity
  • Geotechnical engineering
  • Geology
  • Chemistry
  • Physical chemistry
UN Sustainable Development Goals
  • Life below water
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