Water sorption properties of a polysaccharide adsorbent

Abstract

A flow method was used to determine equilibrium isotherms of the water-corn grit system in the temperature range of 343-373 K. A modified Henderson's equilibrium equation was used to fit the experimental data. Calculated values of the heat of adsorption (10.8-14.6 kcal/g-mol) and surface area (170 m2/g) are similar to those previously reported based on data taken at lower temperatures. These data extend knowledge of the equilibrium behavior of water with respect to corn grits to the temperature range used for the selective adsorption of water from alcohol vapor by corn.

Cassava Starch Pearls as a Desiccant for Drying Ethanol

“…The equilibrium adsorption isotherm for the water-starch system is generally well described by type II isotherm for a low relative humidity range. 10,11 The type II adsorption isotherm represents formation of a monolayer followed by unlimited multilayer adsorption as the concentration of …”

Water and ethanol sorption phenomena on starch

“…Henderson (1952) developed an equation for the water-grain system, which was later modified by Day and Nelson (1965) and by . Neuman et al (1986) successfully modeled the water adsorption on corn grits (i.e., ground corn) at temperatures between 70 and 100°C. The advantage of the Henderson and modified equations is their simplicity.…”

Characterization of Biomass Adsorbent ZSG-1 through Isopropanol and Water Azeotrope Dehydration

“…Artificial materials constructed by mixing these sugar polymers retain or even enhance the adsorptive properties of the ingredients (Neuman et al, 1986;Westgate et al, 1992). The surface morphologies and internal structures of these materials may play important roles in the adsorptive process.…”