3 replies to this topic

[Akshana]

hello, i've been trying to get answers forthese 2 questions but i'm unable to compile much..
plz help me.. somebody!

okay.. In general,
1) what are the factors affecting the efficiency of the separation in the LLE equipment?
2) what are also the advantages and disadvantages in operating a LLE equipment compared to distillation?



Akshana

[camuro]

u use LLE for azeotropes, in distillation u cant separate azeotropes.

[Akshana]

okay, thanks

anymore advantages/disadvantages?

[Art Montemayor]

Akshana:

This Forum was created for - and is dedicated to - helping Chemical Engineering Students with problems they are either unable to understand or to comprehend. It is NOT intended as a means to do your homework or study assignment for you.

As a professional engineer, the best and most positive way I know of to help you out is to offer the following:

1. How is it possible that you are asking these questions after going through a lecture, a Unit Operations text book, or a Unit Operations class?

2. Has your professor/instructor not explained the differences and the advantages between both Unit Operations? If he/she have not done so, why didn't you or other interested students ask the direct questions at that time?

3. Why is it that you don't seem to know the basic differences between both Unit Operations? That, basically, is all that you need to know in order to answer the question(s) intelligently. In fact, these questions are structured the way they are in order to force you to study both of the Unit Operations and compare them, item by item, and write down the differences and the apparent advantages between one or the other.

All of us graduated Chemical Engineers know what you are being asked to do. We've all been there. We also know a lazy student when we see/meet one. Trying to use the Internet or a Forum as a source for your homework assignments is a losing cause. Those that respond to your specific assignment needs are not helping you towards graduation; they are helping you fail as a student and as a potential Chemical Engineer. If you don't do the work that is expected of you, you will fail - either in achieving a degree or worse, later when you apply for a job and your employer finds out you don't know what you are supposed to.

That's why the best help I can give you is not the answers that will give a great grade on your assignment and a lot of free time to play around but rather the following: Take a day -or two - and dedicate yourself to studying and finding out all that you can about how/why Distillation and Liquid-Liquid Extraction works and what is needed for each process to work sucessfully. Study and re-read your detailed lecture and course notes and research both Unit Operations on the Internet. Go to your local technical library and check out books on both subjects and study them carefully and in detail. That's the best and most efficient way to get your answers and also achieve personal excellence and knowledge.

I hope you follow my advice and achieve the high expectations that are expected of you.