Chemistry, 23.08.2019 00:20 cardsqueen
Astudent tested a ro membrane performance. when the feed was pure water and the applied hydraulic pressure was 5 bar, he measured a membrane water flux of 25 lmh. then he added some nacl into the feed to reach a concentration of nacl 10 mm in the feed solution. after stabilized, he measured the permeated concentration was 0.1 mm and the water flux dropped to 22 lmh at the same applied hydraulic pressure. calculate: (1) membrane water permeability; (2) membrane salt permeability; (3) concentration polarization factor under the current testing conditions. (hints: first find/derive the equation for calculating a and b values)
Answers: 2
Chemistry, 22.06.2019 09:00
If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?
Answers: 1
Astudent tested a ro membrane performance. when the feed was pure water and the applied hydraulic pr...
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