Biodegradation of nonlignocellulosic substances I: system for complete decomposition of garbage using sawdust and aerobic soil bacteria

A system for effective garbage decomposition using sawdust and aerobic soil bacteria was examined. The machinery used in this process, the garbage aut omatic decomposer-extinguisher (GADE), is composed of a container with an a utomatic mechanical mixer and a drain for liquid formed by the decompositio n of garbage. The aerobic soil bacteria, cultivated in sawdust, degrades ga rbage within the container. The GADE machine, containing 4 kg of sawdust, t otally decomposed 59.75 kg of garbage within 3 months (0.66 kg/day). Consta nt temperature, pH level, and moisture content of the matrix throughout the experimental period suggested stable degrading action. The residual sawdus t and drainage water from the GADE machine were converted to fertilizers or soil conditioners (GADE compost) by the garbage decomposition process. Nei ther inhibited germination or growth of three test crops: komatsuna, Chines e cabbage (Brassica campestris), hatsukadaikon, radish (Raphanus sativus L. var, radicula), and bisai (Raphanus sp.).