In spite of the growing modernization of the agriculture activity in Brazil, the levels of pollution, misuse of natural resources, and energy costs are also increasing in the country. Fertilizers are increasingly imported and they boost the degradation of natural resources. One can also notice a growing desire to create a self-sufficient rural society that produces virtually everything that is required to cover the material needs, remaining enough surpluses to be sold or exchanged for essential resources lacking to the system or that must come from abroad.

Based on this context, the use of rural biodigesters technology as a suitable and simplified alternative can contribute to the sustainable development of rural areas by promoting their sanitation, preventing pollution and conserving water resources, which are limited and vulnerable. The biodigesters can also promote a self-contained source of energy and biofertilizers, in particular for small farmers. This technology allows for an appropriate treatment of several agricultural organic waste, as well as the energy use of methane gas.

Biodigester is a device that converts raw organic matter into high biological quality biofertilizers which acts as a foliar, radicular fertilizer and as biopesticide, having as gaseous waste, the biogas, an excellent fuel, which results from the anaerobic biological degradation of the organic matter contained in the waste, a process which has methane (CH4) as byproduct. According to studies by the Intergovernmental Panel on Climate Change (IPCC), methane is twenty-one times more harmful to global warming than carbon dioxide (CO2), thus this human intervention, in addition to contribute to the sustainable development of rural areas, also contributes to reducing the environmental impact.
The large territory of Brazil makes the deployment of transport systems and power transmission difficult, which enables the adoption of local and simplified solutions for supplying energy and fertilizers. The biodigester technology is suitable for farmers, and features technical, economic and environmental feasibility, in addition to provide              greater energy autonomy and biofertilizers.® - All rights reserved 2011