“…Its reduction is actually one of the aims of an MBT system. Secondly, since landfilling is the most recurring MSW disposal option in South America, the use of mechanical-biological pre-treatment could have a great impact in terms of reducing the needed sanitary landfill volume (Adani et al, 2004;Fehr, 2003;Mbuligwe et al, 2002), reducing the gaseous and liquid Table 1 MSW average composition (% ww ) in different countries of South America (Acurio et al, 1998) Acurio et al, 1998). emissions during the landfill operation (Bockreis and Steinberg, 2005;Mü nnich et al, 2003;Robinson et al, 2005;Zach et al, 2000), and enhancing the waste body stability, which can result in significant advantages in the aftercare phase of the sanitary landfill (Stegmann et al, 2002).…”