Abstract

To concern the limitation of low productivity of bio-ethanol, a similar condition is to establish the control of organism activity by using different chemical nutrients. Therefore, the multiplication and successive fermentation have given rise to bio-ethanol production from the water hyacinth. During the bio-ethanol production, 25% (w/v) glucose and 0.3% (w/v) NaNO3 assisted as the optimal carbon and nitrogen sources, respectively. The most satisfactory concentrationof KH2PO4and MgSO4.7H2O in the fermentation medium is 0.10% and 0.05%. In this study, it has been found that the addition of NaCl, CaCl2, and MgCl2 to the fermentation medium causes an inhibitory effect on bioethanol production by Saccharomyces cerevisiae AB810.

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