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Energy production from biomass is an effective use of waste products and it also reduces the significant problem of waste disposal. Biomass is a domestic resource that can reduce the amount of coal needed for electricity production. However, biomass has relatively low energy density, so transport and handling costs may make it uneconomical in Australia unless the energy conversion process is close to a concentrated source of biomass, such as a sawmill, sugar mill or pulp mill. There are other problems of odour, disease and controlling wastes when digesters are used.
Nothing that can't be properly dealt with as far as I can tell ..