particles less than 1 mm in size. KW was collected from a university
canteen and consisted mainly of residual vegetables, meat,
rice, and noodles. Once collected, the waste was shredded into particles
with an average size of 5.0 mm and then kept at 4 C. Fresh
pig manure (PM) was collected from a pig farm. After removing visible
bristles, the PM was stored at 4 C. The C/N ratios of RS, KW,
and PM were 47.0, 14.6, and 17.2, respectively, which were all outside
the optimum C/N range of 20–30