| Abstrakt: |
In Brazil, 2011, the National Plan for Solid Waste (NPLSW) was created, proposing, among other objectives, to encourage and develop environmental management systems in order to eliminate the use of controlled landfills and dumpsites as disposal methods, reducing waste disposed percentages in landfills and estimating their use for energetic purposes. In this context, the goal of this study was to analyze the variability of the energy potential of municipal solid waste (MSW) of undifferentiated collection (wet waste) of Santo André, SP, Brazil, considering the variation of gravimetric composition, aiming energy generation by direct combustion (mass burning). Higher and lower heating values (HHV and LHV) were determined for each combustible fraction (organic matter, sanitary waste, plastics, paper/cardboard/Tetra Pak and textiles) present in the waste stream from 36 trucks, according to MODECOM™. Results showed that the LHV waste in nature varied between 5.09 MJ / kg to 10.58 MJ / kg with an average of 7.71 MJ / kg. It was observed that the organic matter content (39.53±13.27%) in the waste reduces its energy conversion potential, whereas the plastics content (14.44±3.82%) enhances it. Therefore, it is possible to infer that the MSW of Santo André has potential to be used in thermochemical conversion processes (incineration). [ABSTRACT FROM AUTHOR] |
