General Aspects of Anaerobic Digestion

Anaerobic digestion (AD) was practiced 2,000 years ago in Mesopotamia. Today it is
widely applied throughout the world. In Europe alone, currently more than 5
million tons of bio-waste per year are treated anaerobically, Globally, a sharp
increase of biogas production from agricultural wastes is to be expected especially in India and China. In both countries there are efforts to increase the share of renewable energies. In China, a potential of 200 million biogas plants and in India, a capacity of 15,000 MW???? within the next 15 years are expected.
*In addition to production of renewable energy and valuable digestate, anaerobic
digestion has further benefits. The amount of organic waste destined for landfills is thus reduced significantly this is necessary to avoid harmful emissions (gas, leachate).
* In developing countries AD also has social and societal impact. Especially in rural areas, self-sufficient supply with fuel for cooking and heating purposes can be partially achieved. The often very time consuming and exhausting collection of fire wood can be omitted, which would have positive effects on the environment, but above all, have a positive influence on housework and cooking. Considering the fact that in most cases women carry out these activities, AD may also contribute to improve work conditions of women.