Download Encyclopedia of Physical Science and Technology, 3e, by Robert Allen Meyers PDF

By Robert Allen Meyers

Show description

Read or Download Encyclopedia of Physical Science and Technology, 3e, Chemical Engineering PDF

Best encyclopedia books

Countries and Their Cultures

Just like the ten-volume Encyclopedia of worldwide Cultures (Macmillan, 1996), the four-volume nations and Their Cultures is predicated at the selection of ethnographic info often called the Human relatives sector documents dependent at Yale collage. in contrast to global Cultures, that's geared up through tradition, the hot paintings is prepared by way of nation.

The Linguistics Encyclopedia (2nd Edition)

The Linguistics Encyclopedia has been completely revised and up to date and a considerable new creation, which types a concise background of the sphere, has been added.
The quantity bargains finished insurance of the most important and subsidiary fields of linguistic research. Entries are alphabetically prepared and widely cross-referenced, and contain feedback for extra analyzing.

New entries include:
Applied Linguistics; Cognitive Linguistics; Contrastive Linguistics; Cross-Linguistic research; Forensic Linguistics; Stratificational Linguistics.

Recommissioned or considerably revised entries include:
Bilingualism and Multilingualism; Discourse; style research; Psycholinguistics; Language acquisition; Morphology; Articulatory Phonetics; Grammatical types and Theories; Stylistics; Sociolinguistics; serious Discourse Analysis.

For somebody with an educational or expert curiosity in language, The Linguistics Encyclopedia is an fundamental reference device.

UXL. Encyclopedia of Drugs and Addictive Substances M-N

This set offers certain info on fifty two medicinal drugs and different addictive components, outlined as unlawful medicinal drugs, felony addictive medications and different components in addition to typically abused sessions of prescription and over the counter medicinal drugs. prepared alphabetically through respectable identify, every one access follows an identical structure, permitting scholars to simply evaluate and distinction diversified medications.

Additional resources for Encyclopedia of Physical Science and Technology, 3e, Chemical Engineering

Example text

This generally requires a rather large purge volume, so such a process would normally be used only in special circumstances. Displacement desorption is similar to purge gas stripping, except that an adsorbable species is used to displace the adsorbed component from the bed. The displacing component should be adsorbed somewhat less strongly than the preferentially adsorbed species so that the adsorption–desorption equilibrium can be shifted by varying the concentration of the desorbent. Such processes run more or less isothermally and offer a useful alternative to thermal swing processes for strongly adsorbed species when thermal swing would require temperatures high enough to cause cracking, coking, or rapid aging of the adsorbent.

6). It is evident that if an isotherm is favorable for adsorption, and that is the most common situation (corresponding to a type I isotherm of Brunauer’s classification), it will be unfavorable for desorption. The rate at which a disturbance propagates through the column is determined by the slope of the equilibrium isotherm and, for a favorable isotherm, is higher at higher concentrations. This leads to “self-sharpening” of the concentration profile and, in a column of sufficient length, to “constantpattern” behavior (Fig.

For nonpolar systems the major contribution is generally from dispersion–repulsion (van der Waals) forces, which are a fundamental property of all matter. When the surface is polar, depending on the nature of the sorbate molecule, there may also be important contributions from polarization, dipole, and quadrupole interactions. Selective adsorption of a polar species such as water or a quadrupolar species such as CO2 from a mixture with other nonpolar species can therefore be accomplished by using a polar adsorbent.

Download PDF sample

Rated 4.23 of 5 – based on 14 votes