Sodium bisulfite cellulosate

Oxidant Removal The presence of oxidizers such as chlorine or ozone can degrade polyamide RO membranes, causing a drop in salt retention. Cellulosic membranes are less sensitive to attack. Addition of 1.5 to 6 mg sodium bisulfite/ppm chlorine or contacting with activated carbon will remove oxidizers. Vacuum degassing with a hydrophobic filter module is also used. 

Immedial Pure Blue (25) forms a crystalline complex with sodium bisulfite and the thiazine ring structure has been clearly established (48AG141). The compound is isosteric with a number of vat dyes, e.g. indanthrone, and thus its hue and good affinity for cellulosic fibres might reasonably be expected. 

Sodium bisulfite-china clay proved to be an efficient initiator for homopolymerization and graft polymerization of methyl methacrylate onto cellulose. Grafting reactions using ceric ammonium sulfate, sodium bisulfite-soda lime glass or -china clay are inhibited or retarded on adding soda lignin to the grafting medium. 

China clay having very nearly the empirical composition AI2O3.2Si02 2H2O (13) was used as soda lime glass with sodium bisulfite as an initiator system for grafting polymethyl methacrylate onto cellulose. 

For grafting polymethyl methacrylate onto lignocellulosic. substrates, sodium bisulfite may be used alone, i.e., in the absence of soda lime glass or china clay. It is worthy to mention that grafting onto pure celluloses failed to take place in absence of soda lime glass (9) (2) lignin already present in... 

Natural convectional dryer has been used in Philippines to produce dried sweet potato. These dryers utilize heat from burning the wastes. About 50 kg of sweet potato chips of high quality are dried for 7-8 h. Another form in which sweet potato is dried and eaten as a dessert or snack is as an edible leather also known as fruit roll or crush. In this preparation, the flesh of sweet potato is cooked, mashed, and sieved, mixed with 0.5% (w/w) carboxymethyl cellulose (a binder), 200 ppm sodium bisulfite, and 7% (w/w) sugar and formed into a sheet 1-mm thick, which is oven-dried at 55°C-75°C and I0%-17% moisture level. Samples dried at 75°C were chewier than those dried at lower temperatures. Samples were crisper and crunchier when dried at 55°C or 65°C. A laboratory-scale high-temperature short-time (HTST)... 

Cellulose Acetate Butyrate (CAB) 8-9 Polycaprolactones 9 see Sodium Bisulfite ... 

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