A new algorithm based on the lattice Boltzmann method (LBM) is proposed as a potential solver for two-dimensional and dynamic heat and mass transfer in metal-hydrogen reactor. To check the validity of this algorithm, computational results have been compared with the experimental data and a good agreement is obtained. The advantages of the proposed numerical approach include, among others, simple implementation on a computer, accurate CPU time, and capability of stable simulation. (C) 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.