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Alpha cellulose, as an effective filter media has been well established and accepted for brine filtration with the advent of membrane cell technology.
This filter aid cellulose has versatile advantages, is technically economical, and is eco-friendly too, since it is biodegradable.
Polishing of brine is necessary to remove the solid impurities even less than 0.3 micron with the help of the filter aid coating on filters. Consumption (T/T of Sodium Hydroxide) of alpha cellulose is reported to vary from 0.27 to more than 0.4 depending upon the grade vis-?vis the pressure drop requirement.
Filtration cycle time varies accordingly in the range of 27 hours to 62.5 hours that also depends upon the flow rate. |
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Cellulose content % by mass, NLT: 99
pH: 6+/-1
Moisture, % by mass, NMT: 7
Residue on Ignition 2h-850'c, % NMT: 0.5
Ether Soluble Substances, % by mass (on dry basis) NMT: 2
Whiteness (absolute value, 461 nm), %: 85+/-5
Bulk density, g/lit: 150-200
Passing 100 BSS, % NLT: 55 |
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