I have got a question that how do the heavy metals dissolve in the
water on molecular level like what kind of bonding occurs. what are the
ways (not chemically or chemical reaction) that we can separate these
metals from water.

On Thu, 01 Sep 2005 21:29:35 -0700, param wrote:


> I have got a question that how do the heavy metals dissolve in the
> water on molecular level like what kind of bonding occurs. what are the
> ways (not chemically or chemical reaction) that we can separate these
> metals from water.


Good A level chemistry book, when has your homework got to be in by ?<g>

Dave

param wrote:


> I have got a question that how do the heavy metals dissolve in the
> water on molecular level like what kind of bonding occurs. what are the
> ways (not chemically or chemical reaction) that we can separate these
> metals from water.
> 


As salts almost certainly.

E.g. lead acetate or some such.

Many ways to extract, depending on scale of operation and purpose of it ..

On Fri, 02 Sep 2005 05:29:35 +0100, param  wrote:


> I have got a question that how do the heavy metals dissolve in the
> water on molecular level like what kind of bonding occurs. what are the
> ways (not chemically or chemical reaction) that we can separate these
> metals from water.


Some metal ions form adducts with water, for example the cuprous ion is  
colourless when anhydrous. If memory serves it hooks onto six water  
molecules of water and becomes blue.
A great deal depends on the other dissolved substances in the water. Salt  
water rots most metals, especially if dissimilar metals are in contact,  
setting up an electrochemical cell. Even differential oxygen content can  
achieve this. As you have ruled out chemical methods, you really need to  
double-distil it.

John Schmitt

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dave stanton wrote:

> On Thu, 01 Sep 2005 21:29:35 -0700, param wrote:
> 
> 
>>I have got a question that how do the heavy metals dissolve in the
>>water on molecular level like what kind of bonding occurs. what are the
>>ways (not chemically or chemical reaction) that we can separate these
>>metals from water.
> 
> 
> Good A level chemistry book, when has your homework got to be in by ?<g>
> 
> Dave
> 


That's the stock reply on sci.chem too :-) Do chemists have a magic circle?

On Fri, 02

> That's the stock reply on sci.chem too :-) Do chemists have a magic circle?


Of course we do !!, never works with regard to salary though <g>.

Dave

"John Schmitt"  wrote in message
news:op.swg0a9gq5ogug8@ps-00045861.uni.mdx.ac.uk...

> On Fri, 02 Sep 2005 05:29:35 +0100, param  wrote:
>
> > I have got a question that how do the heavy metals dissolve in the
> > water on molecular level like what kind of bonding occurs. what are the
> > ways (not chemically or chemical reaction) that we can separate these
> > metals from water.
>
> Some metal ions form adducts with water, for example the cuprous ion is
> colourless when anhydrous. If memory serves it hooks onto six water
> molecules of water and becomes blue.
> A great deal depends on the other dissolved substances in the water. Salt
> water rots most metals, especially if dissimilar metals are in contact,
> setting up an electrochemical cell. Even differential oxygen content can
> achieve this. As you have ruled out chemical methods, you really need to
> double-distil it.
>
> John Schmitt
>



The usual cheap way to achieve removal of unwanteds in water in the home is by
a water purifying system, possibly employing Reverse Osmosis as one of the
stages. For some particular problems, there exist specific filters to remove
that problem - e.g. Nitrate filters are commonly used in East Anglia due to the
high levels of fertilisers (nitrates) reaching the tap water which are not easy
to remove by the water company and not essential to remove from most water
supplied (toilet flushing / garden watering etc)  There exist a few companies
distributing such systems and I am sure a Google would turn them up.

We have a system installed and its amazing how different the water actually
looks and tastes - vegetables taste more as they should and tea/coffee/whisky
tastes completely different, and all the unknowns are being removed when they
turn up.

Nick