Document Details

Document Type : Article In Journal 
Document Title :
Modeling Kinetic Adsorption in Porous Media by a Two-State Random Walk Particle Method
نمذجة الامتزاز الحركي في الأوساط المنفذة باستخدام طريقة المشي العشوائي الجزيئي ذي الطورين
 
Document Language : English 
Abstract : Modeling Kinetic Adsorption In Porous Media by a Two-State Random Walk Particle Method Amro M. M. Elfeki Water Resources Dept., Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah, KSA, E-mail: amro_elfeki@yahoo.co.uk Phone: +966-2-6964826, Mobile:+966-50-4919254 Abstract In this paper we present a stochastic approach to address linear adsorption mechanisms using a two-state particle tracking random walk theory. During reactive solute transport in porous medium particles are assigned two states: either mobile (free) or immobile (adsorbed). By studying the exchange of particles’ states, the mechanism of adsorption can be better understood. The kinetics of the particles is modeled with a Markov chain characterized by a transition probability matrix between the two states. The concept of exchange of particle states of the solute particles is more fundamental than that of considering retardation factor and it is of great significance in modeling various reactive transport mechanisms. A computer code (called ADS_2D) has been developed to perform numerical adsorption experiments. It has been shown from the experiments that adsorption with slow kinetics can not adequately be modeled using a retardation factor. The fundamental analytical solution deviates from the numerical solution, particularly the spreading of the solute plume. This is due to the fact that the fundamental analytical solution does not take into account the extra dispersion due to the kinetic reaction. 
ISSN : 1319-1039 
Journal Name : Meteorology, Environment and Arid Land Agriculture Sciences Journal 
Volume : 18 
Issue Number : 1 
Publishing Year : 1428 AH
2007 AD 
Article Type : Article 
Added Date : Wednesday, March 7, 2012 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
عمرو محمد الفقيElfeki, Amro MohamedInvestigatorDoctorateaelfeki@kau.edu.sa

Files

File NameTypeDescription
 32574.pdf pdf 

Back To Researches Page