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2. Reverse osmosis - Wikipedia

   en.wikipedia.org/wiki/Reverse_osmosis

   Reverse osmosis ( RO) is a water purification process that uses a semi-permeable membrane to separate water molecules from other substances. RO applies pressure to overcome osmotic pressure that favors even distributions. RO can remove dissolved or suspended chemical species as well as biological substances (principally bacteria ), and is used ...

3. Reverse osmosis plant - Wikipedia

   en.wikipedia.org/wiki/Reverse_osmosis_plant

   Reverse osmosis plant. A reverse osmosis plant is a manufacturing plant where the process of reverse osmosis takes place. Reverse osmosis is a common process to purify or desalinate contaminated water by forcing water through a membrane. Water produced by reverse osmosis may be used for a variety of purposes, including desalination, wastewater ...

4. Cross-flow filtration - Wikipedia

   en.wikipedia.org/wiki/Cross-flow_filtration

   The principles of cross-flow filtration are used in reverse osmosis, nanofiltration, ultrafiltration and microfiltration. When purifying water, it can be very cost-effective in comparison to the traditional evaporation methods. In protein purification, the term tangential flow filtration (TFF) is used to describe cross-flow filtration with ...

5. Nanofiltration - Wikipedia

   en.wikipedia.org/wiki/Nanofiltration

   Nanofiltration is a membrane filtration process that uses nanometer sized pores through which particles smaller than about 1–10 nanometers pass through the membrane. Nanofiltration membranes have pore sizes of about 1–10 nanometers, smaller than those used in microfiltration and ultrafiltration, but a slightly bigger than those in reverse ...

6. Here Are All The Chemical-Free Sparkling Water Brands - AOL

   www.aol.com/chemical-free-sparkling-water-brands...

   Aura Bora. The sparkling water-heads that we are, new brands are always making it into our rotation, and Aura Bora is a stand-out. Their sparkling waters are filtered with reverse-osmosis (key to ...

7. Membrane technology - Wikipedia

   en.wikipedia.org/wiki/Membrane_technology

   Nanofiltration and reverse osmosis membranes are mainly used for water purification purposes. Dense membranes are utilized for gas separations (removal of CO 2 from natural gas, separating N 2 from air, organic vapor removal from air or a nitrogen stream) and sometimes in membrane distillation. The later process helps in the separation of ...