Compute the mass of pure water recovered per mass of water

Reference no: EM13172101

1. Mixtures containing solids dissolved in liquids can be separated and purified by evaporating the liquid and leaving behind a crystallized solid. One example of this is in desalination plants, where the water in saltwater is partially evaporated and then recondensed. The resulting streams are pure liquid water and saltwater with higher salt content. This process can be done more cost effectively with a series of small evaporators than with one very large evaporator. Consider the case where a saltwater stream with 3.0 wt% salt is fed to a series of 8 evaporators. The evaporators are designed so that each evaporates the same quantity of pure water. The saltier water is then fed to the next evaporator. The saltwater leaving the 8th evaporator contains 4.6 wt% salt.

A.1) Draw a flowchart showing the first, third, and eighth evaporator and label all relevant streams. Assume 10.0 kg of saltwater are fed to the process.

A.2) Calculate the mass of pure water recovered per mass of water in the process feed.

A.3) Calculate the weight percent of salt leaving the 5th evaporator. (Note: Thoughtful selection of control volume can save you a lot of algebra.)

Reference no: EM13172101

Questions Cloud

Find the mass of barium metal : find the mass of barium metal(in grams) that must react with O_2 to produce enough barium oxide to prepare 1.0L of a 0.10M solution of OH^-

Prepare budgeted income statements : Prepare budgeted income statements for each of the months of April, May, and June that show the expected results from implementing the proposed changes. Use a three-column format, with one column for each month.

How many joules of heat energy must be supplied : A home swimming pool contains 145 m3 of water. At the beginning of the swimming season, the water must be heated from 18 to 31°C. How many joules of heat energy must be supplied?

What is the total cost of job : What is the total cost of Job 6.15 if Business Solutions applies overhead at 50% of direct labor cost and what is the total cost of job 6.15 is Business Solutions uses activity based costing?

Compute the mass of pure water recovered per mass of water : Calculate the mass of pure water recovered per mass of water in the process feed. A.3) Calculate the weight percent of salt leaving the 5th evaporator. (Note: Thoughtful selection of control volume can save you a lot of algebra.)

What is the cost of the raw materials : What is the cost of the raw materials used in June for each of the three jobs and in total and how much total direct labor cost is incurred in June?

State mechanism for the nitration of bromobenzene : Give a detailed mechanism for the nitration of bromobenzene . As part of your answer explain the regiospecificity

State the reaction mechanisms could be coupled : the reaction mechanisms could be coupled, how many moles of ATP will be needed to drive

State how many moles of electrons and protons : If 1/2 mole of oxygen are reduced at the end of electron transport, how many moles of electrons and protons are needed in order to accomplish that conversion?

User Account

All Pages