ALTERNATIVE RENEWABLE ENERGY
Global energy security, sustainability and renewability could be enhanced by harnessing non-food biomass. Depending on the specific area and proportion of cassava output processed, recovered biomethane from CPR provides substantial Energy output.
Cassava is important in the provision of bioenergy such as bioethanol and biogas. For instance, the yield of bioethanol from cassava (6000 kg/ha) is higher than that of sugarcane (4900 kg/ha), carrot (4500 kg/ha), sweet sorghum (2800 kg/ha), Rice (2250 kg/ha), Maize (2050 kg/ha), and wheat (1560 kg/ha.
Biogas engine saves 17 tons of carbon dioxide emissions, 18% reduction in net present cost, 20% reduction in levelized cost of electricity, and 30% reduction in capital cost.
Energy recycling from biomass residues and wastes is increasingly attractive because the sustainability of analysed feedstock favours biomass waste flows over dedicatedly cultivated energy crops. Therefore, utilization of non-food cassava processing residues such as CPR in biomethane production via the anaerobic digestion technology is prudent and beneficial. In order to properly assess and quantify the value and contribution of CPR to the energy mix of cassava producing nations, establishment of Biofuel Potential (BFP) of CPR is necessary.
CDA utilizes cassava starch extraction wastewater and cassava peeling residue (CPR). However, CPR constitutes about 19% fresh weight of the root and is perhaps the most abundant residue from cassava root processing. It is easy to generate and does not require water usage.