TY - THES T1 - Semi-discrete finite difference solution to sorption-convection-dispersion in a column A1 - Gonzales, Arthur Are III LA - English UL - https://ds.mainlib.upd.edu.ph/Record/UP-99796217609940246 AB - A finite difference mwthod was applied to solve the soprtion-convection-dispersion partial differential equations (PDEs) in a column, where six driving force models were considered. Solutions to all goiverning PDEs were coded in the Mathcad and MATLAB environments using second order regular and fourth order upwind finite difference approximation schemesfor the derivatives in space, and explicit Euler for derivatives in time. Parameter inputs were obtained from test cases from various analystical, numerical, and experimental studies in the literature and were used in the codes that describes the corresponding transfer model. The results were tested and verified against these test cases where an excellent agreement between the present numerical simulation and the published results was observed. The method has been validated and proved to be simple, elegant and economical to use. Thus, it is recommended for use in solving the class of sorption-convection-dispersion problems described in this study. NO - Thesis (M.S. Chemical Engineering)--University of the Philippines, Diliman. CN - LG 995 2011 E62 G66 KW - Packed towers. KW - Finite differences. KW - Differential equations, Partial. KW - Semi-discrete. ER -