Gaseous contaminant absorption, effect

The effects of various catalysts (47,48), contaminants (49,50), acid concentration (51), temperature (52), and pressure (53—57) on the rate of absorption have been studied. The patent Hterature indicates that absorption can be improved by making the contact between the gaseous ethylene and hquid sulfuric acid more efficient (58—61), by suitable design of the absorption tower (62), and by various combinations of absorption and hydrolysis (63-68). 

Preventing exposure to hazardous industrial chemicals is a primary concern at industrial sites. Most sites contain a variety of chemical substances in gaseous, liquid, or solid form. These substances can enter the unprotected body by inhalation, skin absorption, ingestion, or through a puncture wound (injection). A contaminant can cause damage at the point of contact or can act systemically, causing a toxic effect at a part of the body distant from the point of initial contact. 

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