Science Buddies: "Ask an Expert"

my name is Choco and i want to know about my chemistry project.
my query is that I want to know "HOW TO EXTRACT WATER FROM JUICE USING CHEMICAL METHODS" please send me the procedure along with the theory.
i have to submit it by next week and i have just started.
thank you
eagerly waiting for a reply.

Hi Choco,

I understand you want to extract water from juice using a “chemical” process. I am unsure how to interpret the word chemical. The most common processes to remove water from solutions in use todat is freeze drying, also know as lyophilization. Here are some links:

http://en.wikipedia.org/wiki/Freeze_drying

http://inventors.about.com/library/inve ... drfood.htm

http://encyclopedia.farlex.com/lyophilisation

http://www.rpi.edu/dept/chem-eng/Biotec ... index.html

Other methods for removing water from solutions exist. For example reverse osmosis:

http://en.wikipedia.org/wiki/Reverse_osmosis

http://chemistry.about.com/od/waterchem ... smosis.htm

The methods above remove water by primarily physical chemical processes, so you might not consider them chemical methods. Another way to remove water from solutions is to use desiccants. Ususally this is done by placing the solution from which water is to be removed and a dessicant in a sealed chamber, a “dessicator”. Water vapor from the solution evaporates into the chamber and is absorbed or reacts with the dessiccant/ A link:

http://en.wikipedia.org/wiki/Desiccant

http://www.newton.dep.anl.gov/askasci/c ... m00603.htm


Hope you find the answers you are looking for in all of this.

Best regards,

Barrett Tomlinson

Hi,

My previous answer left out two obvious methods: vacuum distillation and ordinary distillation or boiling down:

http://en.wikipedia.org/wiki/Vacuum_distillation

http://lorien.ncl.ac.uk/ming/distil/distil0.htm

Best Regards,

Barrett Tomlinson