prob+set+_04+.09 - around $ 3.50 / 1000 gal 1 . a. Explain...

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Chemical Engineering 140 September 16, 2009 Problem Set #4 17. 18. 6.8 19. 7.1 20. 7.12 (Problem 7.12 does not include problems 7.13 and 7.14) 21. To provide fresh water in arid areas, seawater can be desalinated by reverse osmosis (RO). As the population of California rises and more years of draught occur, there is active consideration of building reverse-osmosis desalination units along the coast (such as San Diego county). The current cost of desalination by reverse osmosis is listed as
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Unformatted text preview: around $ 3.50 / 1000 gal 1 . a. Explain how desalination by reverse osmosis works and why is it expensive. b. Assume that all water for crop irrigation in California is supplied by RO desalination. How much would this cost expressed as a fraction of the current Sate budget? 1. www.livescience.com/environment/070625_desalination_membranes.html )....
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prob+set+_04+.09 - around $ 3.50 / 1000 gal 1 . a. Explain...

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