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Homeroasters - Home Roasting Coffee Community » THE ART OF ROASTING COFFEE » Roasting Chemistry

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water and sugar read on
zombie girl	#1 Posted on 06/18/2013 8:54 AM
1/4 Pounder Posts: 62 Joined: March 22, 2012	I found this discussion on Sweet Maria and had to post it here because... >>>Raybob, Of course, you're right about not being able to filter out the sugar with a course filter. The 'filter' that I use for straining my pasta doesn't work. But, have you ever used a water purifier? If not at your house, then surely, you've at least seen them at someone's house or in the store, right? Brita? Even dissolved in water, sugar is still sugar. You can't see it, but, surely, you've tasted water with dissolved sugar, right? It's still sweet, right? You just can't see it. On Jun 14, 2013, at 10:03 PM, Raybob Bowman <[email protected]> wrote: > On 6/13/2013 10:00 AM, [email protected] wrote: >> Date: Thu, 13 Jun 2013 10:52:28 -0400 >> From: Mike Koenig<[email protected]> >> Subject: Re: [Homeroast] Distilled H2O >> Content-Type: text/plain; charset=UTF-8 >> >> "You can't pour water with soluble chemicals through any type of filter to >> make them get out of the water. Only distillation separates them from the >> water." >> >> Wow - so I suppose I was hallucinating the whole time when I observed the >> purity of my laboratory water which had all the "soluble chemicals" removed >> by membranes and deionization resin, or my water softener at home doesn't >> really work either. And the entire water purification industry has it all >> wrong and is a huge scam. >> >> This argument is futile and I can go no further.. >> >> --mike > Mike, if you mix sugar in water, it becomes sugar-water. You can't filter out the sugar, it pours right through whatever is in that filter. How can a membrane remove sugar? Can you pee through those membranes and then deionize it, then make coffee with it? I don't think so. You might just do that, but there's no way I'd drink it. The ONLY way to remove solubles from H2O is by distillation. > > Raybob ><<< I am nit clear on why anyone would think you could FILTER out sugar in water. -g Edited by ginny on 06/22/2013 5:28 PM How to post Photos, Videos? Please visit the Homeroasters Forum How To section here: http://www.homero...?cat_id=16


chromguy	#2 Posted on 06/22/2013 4:57 PM
Newbie Posts: 2 Joined: April 24, 2013	As a chemistry guy, certain filters can remove sugar from water, of course, not a paper filter but a membrane filter such as the ones used in RO. Using a RO type membrane filters can remove "items" such as sugars larger than approx 0.1 nanometer and a simple sugar such as glucose is approx 1 nanometer in diameter. Thus the membrane should stop most/all of the sugar from passing through.

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