Cellulose-based filter sheets

Filtration through cellulose-based filter sheets 351... 

In a lenticnlar modnle, cellulose-based Alter media identical to those in flat-sheet Alters are mounted in sealed nnits, ready for use (Figure 11.13). Implementation is simpler and there is no risk of leaks at high pressnre (a common problem in tray filters). 

Administration (FDA) considers the sodium, potassium, and calcium propionate salts as safe additives (GRAS), since they are found normally in a number of foods and are metabolized easily by all mammals. Propionic acid is used in the production of cellulose-based plastics (such as cellulose acetate propionate), which are used in textiles, filters, reverse osmosis membranes, sheeting, film products, lacquers, and molding plastics. Propionic acid esters and other derivatives are used as antiarthritic and antibiotic drug preparations, as perfumes and flavors (e.g., citronellyl propionate and geranyl propionate), as plasticizers (e.g., phenyl propionate and glycerol tripropionate), and as specialized solvents. 

A process of obtaining a cellulosic wet sheet and a membrane and equipment for their manufacture Development of high performance leukocyte reduction filters based on ultra-fine non-woven fabric Development of a novel adsorbent based on bacterial cellulose for adsorption of rare earth metals Metallization of bacterial cellulose for electrical and electronic device manufacture... 

Exposure of Bleached Pulp. Bleached pulp, based on 50% hardwood and 50% softwood kraft, jordaned to a Canadian standard freeness of 300-350 mL, was kindly supplied by Andrew Chase of the University of Maine. Unaged handsheets made from this pulp contained 85% a-cellulose (3) and 5% hot-1%-alkali-soluble matter (4). In the experiment illustrated in Figure 1, sheets were exposed in the Atlas 6500-W xenon-arc Fade-ometer equipped with Pyrex-glass filters the air temperature was 31 °C, and the relative humidity was 27% the black-panel temperature was 65 °C. Halfway through the reported period of... 

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