Marc D. Donohue

TL;DR: In this article, it is shown that supercritical gases show adsorption isotherms which are fundamentally different from those in the IUPAC classification, which is based conceptually on ideas about the ''absolute'' adsorsion rather than on the Gibbs adsorsions.

TL;DR: In this article, the entire lifecycle of algal biofuels for 1000 bbl d−1 of crude algae oil production is modeled with approximately 4875 ha of raceway ponds for solar collection and cultivation and 1463 MLD (385 MGD) of water handling capacity.

TL;DR: In this article, lattice density functional theory (LDFT) was used to predict adsorption isotherms with hysteresis loops and different types of hystereis loops can be obtained by varying energies of adsorbate-adsorbate and adsorbates−adsorbent interactions for different widths and lengths of slit-like pores.

Abstract: Perturbed-hard-chain theory for pure fluids, proposed previously by Beret, is modified slightly to yield better pure-component results. More important, it is extended to multicomponent mixtures. The perturbed-hard-chain theory is a synthesis of the polymer solution theories of Flory and Prigogine and the perturbed-hard-sphere theories of Alder and Barker and Henderson. The resulting equation of state is applicable to simple as well as complex molecules (for example, heptane, naphthalene, polystyrene). It can be used to calculate both gas and liquid phase properties. Extension of perturbed-hard-chain theory to mixtures is based on a one-fluid model without, however, making the usual assumption of random mixing. The perturbed-hard-chain theory has been applied to most fluids commonly encountered in natural-gas and petroleum refining operations. The theory gives good agreement with experiment for pure-component and fluid-mixture properties including vapor pressures, liquid densities, enthalpies, and K factors. Molecular parameters have been obtained for forty-five pure components and for more than sixty binary mixtures. Ternary and higher mixtures require no additional parameters.

TL;DR: In this article, a semi-empirical model is presented that gives an accurate representation of the thermodynamic properties for hydrogen bonding and nonspherical molecules, which can be applied easily and generally via corresponding states.