ABSTRACT
This chapter discusses the developments in AD to optimize the use of livestock manure, particularly the use of livestock in the production of biogas. Moreover, greenhouse gases from livestock manure are also an important factor in global climate change. In addition to emitting CH4, it is estimated that N2O produced by livestock manure accounts for 30-50% of global agricultural N2O emissions. Livestock manure can also be co-digested with a variety of organic matter, such as the Pennisetum hybrid, mango leaves and animal carcasses. The AD process is also able to partially inactivate weed seeds, bacteria, viruses, fungi and parasites in feedstock from livestock manure, improving safety. Processes are simple: human feces and livestock manure are added to a fermentation tank to produce biogas for human. Anaerobic digestion is an important method for converting biomass into bioenergy. AD can use a range of substrates including kitchen waste, crop straw, energy crops, municipal solid waste, sewage sludge and livestock manure.
