Reprint of: Finite volume methods for multi-component Euler equations with source terms

•Euler equations coupled with species equations are solved with a segregated scheme.•Flux vectors of both systems depend on the conservative variables, time and space.•New discretizations are made so as to ensure that the full scheme is wellbalanced.•The positivity of the new method for the species concentrations is proved.•Numerical results show the performance of the new method also in a real gas network.