Co-gasification of Cassava Rhizome and Woody Biomass in the 1 MW$_{el}$ Prototype Dual Fluidised Bed Gasifier by Gussing Renewable Energy

In the current research, the effect of the mixture ratio by weight of wood chips to
cassava rhizome (100%:0%, 75%:25%, and 50%:50%) was investigated on the properties of the
product gas produced from the Dual Fluidised Bed gasifier power plant. The DFB gasifier power
plant is located in Nongbua district, Nakhon Sawan province, Thailand. The results from this
study show that the use of 100% wood chips as a fuel generates high quality product gas as
designed. The mixture of wood chips and cassava rhizome in the weight ratio of 75%:25% and
50%:50% also gives satisfactory results: steady operation conditions of the whole power plant
process, good quality and quantity of product gas, however, the tar content in the product gas
was slightly higher than that of using wood chips alone. The researchers found that cassava
rhizome can be used as a fuel mixture together with wood chips in the current DFB gasifier at
site to generate heat and electricity. The outcome of this research will create the use of waste
cassava rhizome, enormously available around the power plant, as well as the broad application
of gasification technology using various biomass feedstock types available in Thailand.