[Coral-List] Saving Venice etc.

Bill Allison allison.billiam at gmail.com
Tue Nov 23 11:34:30 EST 2010

Dear Iain,

I am not an advocate. If you find satisfactory answers to your questions and
a few more provoked by assertions in the letter (peer-reviewed publications
would be nice), I'd like to hear. Here is the requested link.



On Tue, Nov 23, 2010 at 8:42 AM, Iain Macdonald
<dr_iamacdonald at yahoo.co.uk>wrote:

> Dear Bill,
> It would be nice if the link below was accessible to all.
> One quick observation - Protocell like many game changing
> direct (artificial) solar to fuels/product technology is quite a long way to
> being mass produced / commerical. Biorock is a two stage sunlight -
> PV=electricity - product so probably isn't as efficient as the proposed
> methods but biorock has an advantage as it has already been applied as your
> link suggests(?). The processes involved are very different but not
> exclusive and certainly worth exploring further.
> Two quick questions - why do "Corals and oysters grow faster and survive
> environmental stress better on Biorock structures"? What is the proven
> mechanism, something that's always interested me.
> How well would biorock work in the waters around Venice? Certainly not as
> well as in the marine environment?
> Iain Macd.
> --- On *Sun, 21/11/10, Bill Allison <allison.billiam at gmail.com>* wrote:
> From: Bill Allison <allison.billiam at gmail.com>
> Subject: [Coral-List] Saving Venice etc.
> To: "coral-list coral-list" <Coral-List at coral.aoml.noaa.gov>
> Date: Sunday, 21 November, 2010, 15:46
> Thomas J. Goreaugoreau at bestweb.net<http://de.mc272.mail.yahoo.com/mc/compose?to=Goreaugoreau@bestweb.net>
> Nature 468, 377 18 November 2010) doi: 10.1038/468377d
> Published online 17 November 2010
> Rachel Armstrong and Neil Spiller suggest that Venice's sinking
> foundations might be supported by an artificial reef grown using
> 'protocells' that precipitate limestone from sea water (Nature 467,
> 916–918; 2010). The technology already exists to grow structures
> rapidly from sea water, and this could be applied in Venice
> immediately.
> 'Biorock' electrolysis of sea water has been used for nearly 35 years
> in more than 20 countries to grow limestone structures of any size and
> shape in sea water and brackish water (W. Hilbertz IEEE J. Oceanic
> Eng. 4, 94–113; 1979).
> Biorock products have a load-bearing strength of up to 80 newtons per
> square millimetre (80 megapascals), around three times higher than
> concrete made from ordinary Portland cement. Corals and oysters grow
> faster and survive environmental stress better on Biorock structures.
> These have helped to restore severely eroding beaches on atoll islands
> within just a few years (for example, see
> http://go.nature.com.myaccess.library.utoronto.ca/buyqjk).
> --
> ________________________________
> "reality leaves a lot to the imagination..."  John Lennon
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"reality leaves a lot to the imagination..."  John Lennon

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