摘要:
The invention is directed to a microbiological interception enhanced filter medium, preferably having an adsorbent prefilter located upstream from the filter medium. Preferably, the prefilter is adapted to remove natural organic matter in an influent prior to the influent contacting the microbiological interception enhanced filter medium, thereby preventing loss of charge on the filter medium. The microbiological interception enhanced filter medium is most preferably comprised of fibrillated cellulose fibers, in particular, lyocell fibers. At least a portion of the surface of the at least some of the fibers have formed thereon a microbiological interception enhancing agent comprising a cationic metal complex. A filter medium of the present invention provides greater than about 4 log viral interception, and greater than about 6 log bacterial interception.
摘要:
A fiber-fiber composite is disclosed herein comprising majority fibers and minority fibers, the minority fibers having a softening point lower than said majority fibers such that when the admixture of majority fibers and minority fibers are wet laid to form a paper-like structure and subjected to a pressure and a temperature above the softening point of said minority fibers, said majority fibers and minority fibers form said composite having a mean pore diameter equal to or less than about 1 μm with a porosity of greater than about 35%, and a wet strength of greater than about 0.013 kg/mm.
摘要:
A process for stabilising a beverage against haze formation comprises treating the beverage with a stabilising agent comprising a particulate silica having a mean pore diameter of at least 6 nm and which has been modified by interaction with a water-soluble polymer having pendant pyrrolidone groups, the polymer being present on the silica in an amount from 5 to 35 per cent by weight with respect to anhydrous weight of silica.
摘要:
A method of treating beverage which comprises contacting the beverage with polyvinyl polypyrrolidone and subsequently centrifuging the beverage to remove the polyvinyl polypyrrolidone.
摘要:
Wines and other alcoholic beverages are treated to remove sulfides by passing the beverage through a filter medium comprising polyvinyl polypyrrolidone, polyvinylimidazole, or a copolymer of the monomers of these two polymers, the polymer or copolymer having been pretreated with a solution of a metallic salt, preferably copper sulfate or silver nitrate.
摘要:
The invention relates to a highly filterable, water insoluble vinyl lactam polymer and to a process for improving filterability of such polymer which comprises irradiation with a source of radiant energy at a dosage sufficient to effect additional cross-linking and or saturation of the polymer.
摘要:
A process for reducing the color of a wine byimmobilizing gelatin to form an insoluble composite andcontacting a fluid selected from wine, grape juice, and grape must with the immobilized gelatin composite; andseparating the fluid from the insoluble composite.
摘要:
Fruit juice is separated from fruit material containing solids in increased yield and quality by adding fibers of an olefin polymer such as polyethylene or polypropylene to the fruit material and separating juice from the mixture of fibers and fruit material. The fibers preferably have a surface area of at least 1 m.sup.2 /g, a mean length of 0.5-5 mm and a mean diameter of 1 to 500 microns.
摘要:
Halogenated hydrocarbons, such as 1,1,1-trichloro-2, 2-bis(chlorophenyl) ethane (DDT) and polychlorinated biphenyls (PCB), are removed from aqueous media including waste water from chemical manufacturing operations by contacting the aqueous media with an effective amount of a polyolefinic microporous adsorbent, preferably in the form of a filter or cartridge.
摘要:
Manufacture of insoluble polyvinyl lactams in the absence of oxygen and in the presence of .alpha.- or .beta.-ketocarboxylic acids or esters thereof.