Water hyacith as a catalyst for biodiesel -dhanapathi deka
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4 Combustion of plant materials sharply reduces the carbon and oxygen contents leaving the alkali metal oxides and carbonates as the main components in ashes. 22,116 The typical procedure for catalyst preparation from agro-wastes is shown in Fig. 1. Calcination is one of the com- monly employed methods for the preparation of heterogeneous catalysts from agro-waste. ...
... 4,110 Literature reports reveal that ashes contain potassium, sodium, and carbonate as major components along with other trace elements which are basic in nature. 89,101,104,116 In a study, Sarma et al. 89 reported that the ashes obtained from Musa balbisiana underground stem contained oxides and carbonates of some alkali and alkaline earth metals. The presence of a high amount of potassium oxide in the ashes is respon- sible for making them alkaline, resulting in a high catalytic activity in biodiesel synthesis. ...