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

#titleelectrode potential .., how electrode potential through nernst equati...

how electrode potential through nernst equation can be determind/

Describe what you understand by elasticity, Question: (a) Explain why m...

Question: (a) Explain why metals are mostly ductile and ceramics brittle at room temperature. (b) Describe what you understand by the following terms. Use appropriate il

Non-metals - hydrogen, HYDROGEN Hydrogen is the natural element in the ...

HYDROGEN Hydrogen is the natural element in the Universe and is a major constituent of stars. It is relatively much less common on Earth but nevertheless forms nearly 1% by mass

Benzene- hydrocarbon, Benzene- Hydrocarbon Benzene is the first or init...

Benzene- Hydrocarbon Benzene is the first or initial member of arenes. It was first revealed by Faraday in year 1825 from whale oil. Mitscherllich (1833) acquired it by distill

Explain what is a base line, Explain What is a base line? Base line is no...

Explain What is a base line? Base line is nothing but the detectors response to the mobile phase.(gc,hplc)

Summery, i wanna someone help me to do summery from 2 pages like essay for ...

i wanna someone help me to do summery from 2 pages like essay for articl?

Polymer, short note on vulcanization of rubber.

short note on vulcanization of rubber.

Chemical change, clear scientific definition of exothermic and endothermic...

clear scientific definition of exothermic and endothermic reactions

DeBrogli wavelength, What will be wave length of a ball of 0.1 kg mass movi...

What will be wave length of a ball of 0.1 kg mass moving with 10 ms -1 velocity

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