Biogasification of Livestock Wastes: From the Late 1990s to the Early 2000s

Biogasification of Livestock Wastes: From the Late 1990s to the Early 2000s
From the late 1990s to the early 2000s, biogasification of livestock wastes attracted attention as a technology to address the problems of manure disposal and the increasing environmental burden caused by the large-scale production of livestock. The technology is characterized by the fact that it simultaneously realizes treatment and energy utilization by recovering methane gas through anaerobic fermentation and using it for power generation and heat utilization. At the time, the Livestock Wastes Law was being developed, and there was a need for both appropriate treatment and resource utilization. The system could be introduced in stages, from a simple device to a plant type, depending on the size of the farm, and the fact that the fermentation residue could be returned as liquid fertilizer was also highly regarded. Although its popularity was limited, this technology redefines livestock excrement as a local resource and represents a prototype for a recycling-oriented agricul
tural model that links agriculture, the environment, and energy.