Equilibrium moisture content of waste mixtures from post-consumer carton packaging.

Programa de Pós-graduação em Energia, Departamento de Engenharias e Computação, Centro Universitário Norte do Espírito Santo, Universidade Federal de Espírito Santo, São Mateus, ES, Brazil. marcelobacelos@ceunes.ufes.br

Environmental technology 2012 Apr-May

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The manufacturing of boards and roof tiles is one of the routes to reuse waste from the recycled-carton-packaging process. Such a process requires knowledge of the hygroscopic behaviour of these carton-packaging waste mixtures in order to guarantee the quality of the final product (e.g. boards and roof tiles). Thus, with four carton-packaging waste mixtures of selected compositions (A, B, C and D), the sorption isotherms were obtained at air temperature of 20, 40 and 60 degrees C by using the static method. This permits one to investigate which model can relate the equilibrium moisture content of the mixture with that of a pure component through the mass fraction of each component in the mixtures. The results show that the experimental data can be well described by the weighted harmonic mean model. This suggests that the mean equilibrium moisture content of the carton-packaging mixture presents a non-linear relationship with each single, pure compound.

Citation

M S Bacelos, J T Freire. Equilibrium moisture content of waste mixtures from post-consumer carton packaging. Environmental technology. 2012 Apr-May;33(7-9):783-90