Multi-stage flash distillation is used to desalinate seawater so it is fit for human consumption. A...

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Chemistry

Multi-stage flash distillation is used to desalinate seawater soit is fit for human consumption. A flash distillation tank iscomposed of small chambers (called \"stages\"), each at a lowerpressure than the previous stage. Salt water enters the firstchamber, some fresh water flash evaporates, condenses, and isremoved from the distillation tank. The remaining salt water movesto the next chamber, some fresh water flash evaporates, condenses,and is removed from the distillation tank. The remaining salt watermoves to the next chamber, and the process repeats until very saltywater is expelled as waste. Brine that is 35,000 ppm salt isdesalinated through a 5-stage flash distillation process. Thepressure in the stages is such that 8% by mass of the waterentering the stage evaporates and leaves as fresh water. If thedesalination plant wants to produce 2800.0 gallons of drinkingwater per day, how many gallons of brine must the plant take in perday? The density of fresh water is 1.000 g/cm3. The density ofbrine is 1.025 g/cm3. a. What mass of waste brine is expelled inone day?

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4.4 Ratings (851 Votes)

Let P kg of brine solution enter the system conc of salt 35000 ppm or 35000 gm of salt in 1000000 gm of water mass of salt 35000350001000000 3382 mass of water 9662 given 8 of water entering the system See Answer

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