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Author Topic: brucite dissolution/precipitation kinetics  (Read 2351 times)

Cauchy

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brucite dissolution/precipitation kinetics
« on: 24/07/19 17:06 »
hello dear all.

Please I'm looking for Brucite dissolution/precipitation kinetics parameters: constant rate and specific surface at 25°C.

Think you for your help
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dlparkhurst

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Re: brucite dissolution/precipitation kinetics
« Reply #1 on: 24/07/19 17:17 »
Palandri and Kharaka is a place to start. It provides rate parameters and citations.

https://pubs.usgs.gov/of/2004/1068/pdf/OFR_2004_1068.pdf
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Cauchy

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  • Posts: 8
Re: brucite dissolution/precipitation kinetics
« Reply #2 on: 24/07/19 17:28 »
hello,

thank you for your answer but i've already red that paper and the computation seems to have been done at pH=0 while i'm doing my simulation in natural seawater (pH=8.22).
So i'm not sure about that values.

Thanks in advance !!
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John Mahoney

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Re: brucite dissolution/precipitation kinetics
« Reply #3 on: 24/07/19 19:28 »
Palandri and Kharaka include neutral pH rate data for brucite that could be used for a start. 

Also a newer source of rate data is available at

https://www.or.is/sites/or.is/files/kinetic_database.pdf

Authors are Julien Declercq and Eric Oelkers

  it does include newer brucite data.  Some is  from 2004 and was not cited in Palandri and Kharaka.   I have not studied it I will leave that to you.


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Cauchy

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Re: brucite dissolution/precipitation kinetics
« Reply #4 on: 25/07/19 14:03 »
thank you very much Mahoney,

I'll read it and come back to you !
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