defined system, it assesses the capacity of a system to
close the material flows through the recovery of its MSW.
The indicator may have positive, negative values or can be
zero. The optimum value is considered to be the unit, which
stands for the cases of socioeconomic systems that recover
all the MSW they generate. Depending on the solid waste
management system and solid waste treatment options
applied, if the disposal of waste in landfills is the most
widely used option, it can be expected that the values of this
indicator go towards 0. In general, if the values are low, the
system is considered to be less sustainable.