Compared to CH4 yields of fallen tree leaves (81.0 L kg1 VS)
(Brown et al., 2012), albizia leaves achieved higher CH4 yields at
the same temperature (37 C). In general, CH4 yields of food wastes
obtained in this study were higher or comparable to those reported
in other publications (85–360 L kg1 VS), although a higher temperature
(37 C) was used in this study compared to these reports
(30–35 C) (Bindu and Ramasamy, 2008; Shiralipour and Smith,
1984; Yang et al., 1984). Besides, differences in other factors, such
as mixing conditions and source of inoculum, might also contribute
to the difference in CH4 yield between this study and the others.