Abstract: The present invention is directed to processes for producing a high purity organic solvent from a crude organic solvent comprising providing a stream of crude organic solvent comprising a first amount of at least one impurity and adsorbing at least one impurity contained in said crude organic solvent onto an adsorbent to produce a purified organic solvent comprising a second amount of impurities, the second amount of impurities being less than the first amount of impurities.

Abstract: The invention provides a process for the purification of alcohols, particularly for the purification of isopropyl alcohol. A invention provides a process for reducing the amount of ultraviolet light absorbing ketone impurities and/or aldehyde impurities in a fluid mixture containing an alcohol in addition to ketone impurities and/or aldehyde impurities, which comprises reacting a fluid mixture containing an alcohol in addition to ketone impurities and/or aldehyde impurities, with a sufficient amount of a reducing agent, under conditions wherein the reducing agent is preferentially more reactive with the ketone impurities and/or aldehyde impurities than the alcohol to thereby form a reaction product; and then recovering a recovered alcohol product from the reaction product.

Abstract: Systems and methods for cleansing a fluid stream including a support structure positioned generally perpendicular to the fluid stream, the support structure creating an interior space and including a plurality of apertures to allow fluid to flow through the apertures. Also included is at least one expanded sheet positioned within the space, the expanded sheet having a plurality of expanded slits, and a photocatalytic agent coupled to the expanded sheet to oxidize airborne contaminants when exposed to a light source. Pleats may be formed in the expanded sheet to further increase the reactive surface area.

Abstract: The present invention is directed to processes for producing a high purity organic solvent from a crude organic solvent comprising providing a stream of crude organic solvent comprising a first amount of at least one impurity and adsorbing at least one impurity contained in said crude organic solvent onto an adsorbent to produce a purified organic solvent comprising a second amount of impurities, the second amount of impurities being less than the first amount of impurities.