The content (CNM) of CNT in tennis racquets is in the order of 1.49 g/kg (Nanoledge 2008), and because CNT molecules are embedded in a solid graphite matrix, no release is likely to occur during the use phase, and thus, 100 % of the ENM will reach EOL (Franco et al. 2007; Meyer et al. 2009). Consequently, it is estimated that about 0.47–1.23 Mg year-1 of
CNT will be found in solid waste streams (Table 3).