This book provides research on theories, properties and applications of porous media. Chapter One considers non-standard models of multi-component adsorption with applications to gas adsorption processes in coalbeds. Chapter Two discusses the influence of temperature dependent thermal conductivity on non-darcy flow and heat transfer in a vertical rectangular duct. Chapter Three investigates the effects of different modes of evaporation on the time-dependent wicking behavior of liquids into a porous strip. Chapter Four deals with the study of dispersion of a solute for porous medium in a vertical double-passage channel with first order chemical reaction. Chapter Five investigates the effect of partial slip viscous flow over a stretching sheet with suction/injection in a porous medium. In Chapter Six, the onset of nanofluid convection in a Walters B fluid-saturated horizontal porous layer is studied.