Chemical Characteristic Of Source- Separated Organic Municipal Solid Wastes Treated With Diastic Microbes As Animal Feed

ABSTRACT

The organic household waste fraction originating from Umuahia metropolis was analyzed with respect to visible contaminations, degradation and chemical composition including heavy metals, using samples from 2 tonnes of material. After manual sorting and magnetic separation of the waste, another 20% of wet weight was observed as impurities and 80% as inorganic solid wastes. Of these, plastics constituted 75.5% and metals 13.6% of wet weight. Where 80% sorted as organic solid waste, was evaluated, 8% was observed as paper waste and 92% was noted as pure organic waste materials. The wastes were dehydrated using diastic microbes obtained from the snail (Achatina fuilca.). Cellulose constituted 169-130g kg^-1 DM, crude fat 179-1 20g kg^-1 DM, starch 160 — big kg^-1 DM, lignin 113-80g kg' DM, hemicelluloses 56 — 6g kg^-1 DM and sugar 22 — 49g kg^-1 DM; while the energy value was 14.24 — 10.28 MJ kg^-1DM. The concentrations of cadmium and mercury found in the sorted waste were low (P<0.05) among the treatments, similar data were obtained on molybdenum and other metals and nutrients studied. ><0.05) among the treatments, similar data were obtained on molybdenum and other metals and nutrients studied.