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* [[Course_outline_(2012) | Course outline]]
* [[Course_outline - 2014 | Course outline]]
* [[Course videos from 2012 | Course videos from 2012]] <!-- <span style="color:#008000">(updated)</span> -->
* [[Separation_Processes:_4M3:About | Copyright and other legal stuff]]
* [[Separation_Processes:_4M3:About | Copyright and other legal stuff]]
* [http://learnche.mcmaster.ca/feedback-questions Comments, questions, feedback?] Don't wait for official course evaluations.
<hr>
<hr>


'''Announcements''' ([[Archived-Announcements-2012|previous ones]])
'''Announcements''' ([[Archived-Announcements-2014|previous ones]]) <!--or <html><a href="https://twitter.com/4m3separations" class="twitter-follow-button" data-show-count="true" data-lang="en">Follow @4m3separations</a><script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script></html>  -->
* '''Notes for Tuesday''', 06 November, will be posted soon. Please check back later.


* '''Important''': parts of assignment 4 will be covered in class on Tuesday. Assignments must be submitted by the start of class on 6 November.


{| class="wikitable"
This course website is an archive of the website, as used in 2012, 2013 and 2014. It is still open for your reference. Please [[Separation_Processes:_4M3:About |feel free to use these materials]] as you wish.
|-
| Some hints and an update for [[Assignment 4 - 2012|assignment 4]], question 5:
* The \(A_\text{salt}\) and  \(A_\text{solv}\)  terms '''''are not''''' the area of the membrane: they are the permeances of the salt and solvent respectively. This unfortunate notation is widely used though in most texts.
* There is a correction, the feed concentration '''should be 2.5 g NaCl per liter''' in the feed ('''not 2.5 wt% NaCl'''). I apologize for wasting your time for those of you that have been iterating with negative concentrations.
* And another hint. I found a way to solve question 5 that leads to faster convergence:
** Specify \(C_F\) and \(\theta\)
** Guess \(C_R\) instead
** Calculate \(C_P\) from equation 5
** If your calculated value of \(C_P\) is negative or exceeds \(C_F\), then repeat your guess for \(C_R\), until you get a \(C_P\) that lies between 0 and \(C_F\) and double check also that the rejection coefficient from this \(C_P\) is reasonable, around 90 to 99%.
** This approach to estimate \(C_R\) and then \(C_P\) will get you really close to the final answer.
** Now carry on with the rest of the steps in the notes. It's interesting how simply flipping what you guess first leads to much faster convergence.
** If you iterate and get a negative value for \(C_P\) or \(C_R\), it simply means that you must decrease your guess for that term, since you obviously can't have a negative concentration.
* And a final hint: this question is much better to solve on a computer, with goal seek, than by hand. There is tremendous sensitivity to initial guesses, so solving by hand will take too long.
* For question 2(B), part 3: by definition, optimization implies we have excess degrees of freedom, i.e. more unknowns than equations. You should get a system of 3 unknowns (including \(A_1\) and \(A_2\)) and 2 equations. Set the 3rd unknown to various values (between its lower and upper bound), and solve for \(A_1\) and \(A_2\). Pick the solution that gives the optimum.
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<ol>
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<li> [[Overview of separation processes - 2012 | Overview of separation processes]]
|-
<li> [[Sedimentation, screens, centrifuges, cyclones - 2012|Thickeners and clarifiers (sedimentation), screens, centrifuges and cyclones]]
! Topic
<li> [[Membranes, dialysis, reverse osmosis, filters and bioseparations - 2012 | Membranes, dialysis, reverse osmosis, filters and bioseparations]]
|-
<li> [[Liquid-liquid extraction - 2012 | Liquid-liquid extraction]]
| width="70%" | 1. [[Overview of separation processes - 2014 | Overview of separation processes]]
<li> [[Adsorption, ion-exchange and chromatography - 2012 | Adsorption, ion-exchange and chromatography]]
|-
<li> [[Evaporation, drying and overview of crystallization - 2012 | Evaporation, drying and overview of crystallization]]
| 2. [[Mechanical separations - 2014|Sedimentation, particle size, centrifuges, cyclones, filtration]]
</ol>
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| 3. [[Membrane separations - 2014 | Membranes, microfiltration, ultrafiltration, reverse osmosis]]
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| 4. [[Liquid-liquid extraction - 2014 | Liquid-liquid extraction]]
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| 5. [[Adsorption separations - 2014 | Adsorption]]
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| 6. [[Heat-based separation - 2014 | Drying]]
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| 7. [[Course wrap-up - 2014 | Course wrap up]]
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<ul>
<ul>
<li> [[Course wrap-up - 2012 | Course wrap up]]</li>
<li> [[Suggested_readings|Suggested course readings]]</li>
</ul>
</ul>
<hr>
<hr>
* [[Suggested_readings|Supplementary readings]]
* [[Course materials from 2013]]
* [[Course materials from 2012]]
* [[Course pack for 2011]]
* [[Course pack for 2011]]
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'''Assignments''':  
'''Assignments''':  
# [[Assignment 1 - 2012]] <span style="color:#008888">(with solutions)</span>
''please, first read'' our guide on how to [[Electronic_submissions_-_2014|submit an assignment electronically]].
# [[Assignment 2 - 2012]] <span style="color:#008888">(with solutions)</span>
# [[Assignment 1 - 2014]]  
# [[Assignment 3 - 2012]] <span style="color:#008888">(with solutions)</span>
# [[Assignment 2 - 2014]]
# [[Assignment 4 - 2012]]
# [[Assignment 3 - 2014]]
# [[Assignment 5 - 2012]]
# [[Assignment 4 - 2014]]  
'''<span style="color:#008080">New</span>''': How to [[Electronic_submissions_-_2012|submit an assignment electronically]]
# [[Assignment 5 - 2014]]
 
<hr>
<hr>
'''Tests, exams and project'''
'''Tests, exams and project'''
:* [[Take-home exam - 2012|Take-home exam]]
:* [[Course project - 2014| Course project]]
:* [[Course project - 2012| Course project]]
:* [[Written midterm - 2014 | Written midterm]]
:* [[Written midterm - 2012 | Written midterm]] <span style="color:#008888">(with solutions)</span>
:* [[Final exam - 2014|Final exam]]
:* [[Final exam - 2012|Final exam]]
:* [[Practice questions | Practice questions for tests and exams]]
:* [[Practice questions | Practice questions for tests and exams]]
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|id=354d6ffjr0ndcasofrnuc7h61c@group.calendar.google.com
|id=354d6ffjr0ndcasofrnuc7h61c@group.calendar.google.com
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|id=canadian__en@holiday.calendar.google.com
|id=mac.chemeng@gmail.com
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|title=4M3 class calendar
|title=4M3 class calendar

Latest revision as of 19:59, 6 December 2018