Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Experimental study and reaction path modeling of the carbonation of
  natural serpentinites   Mineralization of carbon dioxide is often seen as an attractive alternative
to classical Carbon Capture and Storage (CCS) technologies, allowing the
sequestration of \ce{CO2} as a solid mineral with no risk of aquifer
contamination or leakage back to the atmosphere. While olivine and pyroxenes
are known to easily and quickly react with dissolved \ce{CO2}, fresh
peridotites are quite rare and ultramafic rocks usually contain significant
amounts of serpentine, which presents a lower reactivity. The purpose of this
study was then to analyze the reactivity of two natural rocks: a partially
serpentinized lherzolite and a fully altered serpentinite. Results confirm that
serpentine is much slower to react and gets altered only if the activity of
\ce{CO2} is high enough and if all olivine and pyroxenes have already been
consumed. Resulting carbonates are mostly Mg-rich calcite or Mg-depleted
dolomite with the occurrence of eitelite (\ce{Na2Mg(CO3)2} in the case of high
Na activities. The carbonation of these serpentinite was however associated in
some cases with a heavy precipitation of hazardous asbestiform chrysotile,
which could be a potential threat for engineered carbonation processes.

2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys