Estimate the osmotic pressure, Chemistry

Assignment Help:

A reverse osmosis membrane is used to desalinate high salinity groundwater. It is proposed to build an RO plant that will process about 500,000 liters/day of saline feed water containing sodium chloride at a concentration of about 5,000 mg/L having osmotic pressure of 3.57 atm. The permeability of the membrane selected for desalting the above water source is 3.2x10-8 m3 water/(m2 •s•atm)..

1. If 50% of the feed is recovered as desalted water at observed salt rejection of ~99%.

a. What is the required minimum feed pressure assuming that the entire membrane surface is to produce water permeate.

b. Estimate the expected salt concentration of the concentrate stream?

c. Estimate the osmotic pressure of the exit concentrate stream?

d. What is the required membrane surface area?

 2. If the concentration of the salt at the membrane surface, just at the exit end of the membrane channel, is a factor of 1.2 higher than the bulk concentration (assumed to be equal to the feed concentration), estimate the value of the mass transfer coefficient (in the appropriate units), assuming the same permeate flux as in part 91).


Related Discussions:- Estimate the osmotic pressure

Law of chemical combination, law of chemical combination with aim,introduct...

law of chemical combination with aim,introduction and conclution

Write the neutral calcium atom has a number, Write the neutral calcium atom...

Write the neutral calcium atom has a number The neutral calcium atom has a number of valence electrons euivalent to its group number, that is 2.

#title, Aluminium utensils should not be kept in water overnight.Give reaso...

Aluminium utensils should not be kept in water overnight.Give reason

Phase rule, what is degree of freedom?

what is degree of freedom?

Stvx, Give the styx code of b4h10 and which type of bond present in it?

Give the styx code of b4h10 and which type of bond present in it?

Explain tin chloride is a reducing agent, Write one chemical reaction each ...

Write one chemical reaction each to show that (a) Tin (II) chloride is a reducing agent. (b) Chlorine gas can be getting from bleaching powder.

Explain the electronic distribution complexes, Q. Explain the electronic di...

Q. Explain the electronic distribution complexes? In majority of the cases the decrease in the number of unpaired electrons agrees well with the magnetic moment values obtained

Explain the orientation of d-orbitals in organic chemistry., There are five...

There are five d-orbitals totally existed. These are designated as  d xy ,  d yz , ,  d xz ,  and . The shapes of these orbitals are explained below:      The three or

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd