  Quantifying the efficiency of dust destruction in the interstellar medium
(ISM) due to supernovae (SNe) is crucial for the understanding of galactic dust
evolution. We present 3D hydrodynamic simulations of an SN blast wave
propagating through the ISM. The interaction between the forward shock of the
remnant and the surrounding ISM leads to destruction of ISM dust by the shock
heated gas. We consider the dust processing due to ion sputtering, accretion of
atoms/molecules and grain-grain collisions. Using 2D slices from the simulation
timeseries, we apply post-processing calculations using the Paperboats code. We
find that efficiency of dust destruction depends strongly on the rate of grain
shattering due to grain-grain collisions. The effective dust destruction is
similar to previous theoretical estimates when grain-grain collisions are
omitted, but with grain shattering included, the net destruction efficiency is
roughly one order of magnitude higher. This result indicates that the dust
destruction rate in the ISM may have been severely underestimated in previous
work, which only exacerbates the dust-budget crises seen in galaxies at high
redshifts.
