Nanofiltration (NF) is a membrane liquid-separation technology sharing many characteristics with reverse osmosis (RO). Unlike RO, which has high rejection of virtually all dissolved solutes, NF provides high rejection of multivalent ions, such as calcium, and low rejection of monovalent ions, such as chloride.
What is NF membrane made of?
While NF membranes are made of polymers similar to those of RO membranes, UF and MF membranes are made of other polymers, such as polyvinylidene fluoride (PVDF), poly-phosphonate, and other materials. Some of the above-mentioned membranes are used for the pretreatment of polluted waters before RO desalination.
What is the use of NF?
NF 10mg Tablet is a medicine used to treat high blood pressure (hypertension) and to prevent angina (heart-related chest pain). It belongs to a class of medicines known as calcium channel blockers. It lowers blood pressure and reduces the workload of the heart.
What is the difference between RO and NF?
NF delivers slightly coarser filtration than RO, with the ability to remove particles as small as 0.002 to 0.005 μm in diameter. NF is a relatively recent technology that was developed mainly for potable water generation.
Is nanofiltration better than reverse osmosis?
Nanofiltration requires less energy and produces higher fluxes at low pressures; works best for applications that do not require a feed stream completely free of dissolved solids. Reverse Osmosis, on the other hand, is the solution for absolute purified water although it requires more energy to produce.
Does nanofiltration remove chlorine?
NF can reduce or remove TDS, hardness, color, agricultural chemicals, high molecular-weight, fulvic materials (which can form trihalomethanes when chlorinated). NF is also used to remove both organics and inorganics from different wastewaters.
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