Co gasification with spent tea waste to enhance the gasification potential of rice husk and groundnut shell an experimental evaluation

Abstract

Current energy scenarios dictate the increase of renewable energy contribution in global primary energy mix to mitigate global temperature rise, besides meeting the requirements for energy transition 2050. The increase in the utilization of renewables was evident in the last decade and the share of bioenergy in global energy usage was around 50%. The bio resources are in the form of fuelwood, agricultural resides and wastes. Currently, agricultural residues contribute only 3% in the global share of biomass. Even though many wastes are utilised for energy conversion, the use of agricultural residues and wastes can play a major role in the process of energy transition. Further, the improvement in energy efficiency of conversion systems is essential to widen the biomass application in energy generation. newlineThe global energy potential from agricultural residue is predicted to be between 4.3 and 9.4 billion tonnes per year. Asian region has a huge potential of biomass due to its strong agriculture base. Many countries like India are already implementing policies, and focusing on meeting rural and industrial energy needs by biomasses utilization technologies. One popular device for this task is biomass gasifier which can support many applications and better utilisation of agricultural residues. Even though many gasifier types are available for the gasification of agricultural residues, a suitable gasifier for a particular region could be selected based on the popular crops of the place. The downdraft gasifier is commonly used in commercial applications and the throat less type is preferable for fine feedstocks such as rice husk, groundnut shell, almond shell and so on. newline