Transport-controlled reaction rates under local non-equilibrium conditions

Details Transport-controlled reaction rates under local non-equilibrium conditions Transport-controlled reaction rates under local non-equilibrium conditions

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3410404s&link_type=abstract

Geophysical Research Letters, Volume 34, Issue 10, CiteID L10404

Statistics

Computation

5

Hydrology: Chemistry Of Fresh Water, Hydrology: Groundwater Quality, Hydrology: Groundwater Transport

Scientific paper

Chemical reactions are driven by non-equilibrium and can be fully described by the spatio-temporal distribution of the reaction rate. We present an analytical approach for the computation of reaction rates under local non-equilibrium conditions for a precipitation/dissolution problem. We derive an original non-linear partial differential equation for the reaction rate r and present a series expansion of r for large Damköhler numbers, i.e., fast local scale reactions. The impact of local scale non-equilibrium conditions on the transport-controlled reaction rate is studied for reactive transport in a column.

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