Answer to Question #248624 in Chemical Engineering for Izzy

Question #248624
Brackish water is desalinated by evaporation for irrigation purposes. If the feed water has 1036.74 ppm of salt, and if the product has to contain 0.0032 % salts as illustrated in Fig 1, what fraction of the feed water should bypass the evaporator?
1
Expert's answer
2021-10-10T09:33:10-0400


feed water = 800.96 ppm

product water = 0.0034% = 34 ppm


"800.96 \u00d7( 1-x)= 34 \u00d7 x\\\\\n800.96- 800.96x = 34x\\\\\n800.96 = 834.96x\\\\\nx = 800.96\/834.96 = 0.959"


part needed to bypass = "1\n\u2212\n0.959\n1=0.041"


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