2.2. Analytical methods used in life cycle assessment (LCA)
The LCA was assessed using the matrix inversion method (Heijungs and Suh, 2002), implemented in MS Excel 2007. The
approach allowed the comprehensive analysis of the two systems using only a single linear algebra equation:
h ¼ CBA1f (1)
where f ¼ functional unit of the study, expressed as a vector of n products (n 1)