Re: Construction of first sphere

This one went directly to Bill only. I'm re-posting to the whole list.


>Date: Thu, 08 Oct 1998 14:11:00 -0700
>To: Bill Marsh <bmarsh at v-wave dot com>
>From: Patrick Salsbury <salsbury at sculptors dot com>
>Subject: Re: Construction of first sphere
>In-Reply-To: <3619DCB4 dot 579351F6 at v-wave dot com>
>At 02:10 AM 10/6/98 -0700, you wrote:
>>Well, I finally decided to contribute.  I'm curious about a couple
>>things about regulating the Fe+3 concentrations.  I know that the
>>tolerance of the average human is 0.3 ppm of Fe+3 in drinking water, I'm
>>curious if anyone knows the LD50, etc for fish.  My only concern is that
>>the reaction process may go too quickly and cause a local saturation of
>>Fe+3 which may go beyond the tolerance of fish that may wander too close
>>to the experiment.  But I guess this solely depends on the amount of
>>scrap that is placed near/in the spheres.
>	That I'm not sure of. I wanted to run some tests in on-ground tanks where we could pump in fresh seawater (ie - fresh minerals) and see how well the algae can keep up with things. I've got a snippet where some researchers dumped iron into the water and noticed a huge algae bloom. I'm not sure if the timescale was hours, days, or weeks, though. It could be that it's quite quick, providing a rich source of foodstuff for fish. We'll need to test that, though.
>	I'll post the other snippet in a separate note...
>> My other concern is that Fe2O3 will be produced and deposit on the
>>scrap metals reducing current flow.  Some sort of process will have to
>>be made to monitor the scrap metal and watch for this so the 'rust' may
>>be removed to maximize the use of the scrap.
>	Actually, this won't happen. In my small-scale tests a few years ago, I discovered that the electric current actively drives the rust off the metal, and it  stays shiny while continuing to emit Fe ions into the water. It was only when I pulled the metal out of the water and let it sit in air for a few days that it started to rust... 
>> I really like the ideas that I see coming out of here.  I'm not all
>>that experienced in the actual functioning on the project of yet, but
>>I'm catching on.  But I'll put in my two bits here and there...
>>Something I can actually apply my recently obtained Chemistry degree to
>>I guess... heheheh
>	Sounds good! And there's a lot of other things in the Reality Sculptors Project that will require chem knowledge. I don't have a degree in it, but I'm fascinated, and do read some chem books on my own just to understand what's going on, and what's possible. Have been considering pursuing a chem degree. Still not sure I have the bandwidth for it, though...

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