Bio-ethanol production potential of Water Hyacinth (Eichhornia crassipes) as alternative energy feedstocks

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Abstract Ecological disruptions and loss of productivity are foreseeable dangers facing Lake Abaya and the surrounding wetland. This in turn affected communities whose livelihood depends for fish and other Lake resources. The aim of the present study was to produce bioethanol from Water hyacinth (Eichhornia crassipes) as an alternative energy feedstock for a win-win eco-sanitation approach to halt ecological disruption. The Water hyacinth sample was collected from Lake Abaya in Arba Minch and pretreated to get rid of mud and dirty wash debris. DNS method was used for estimating Reducing sugars in the sample using DNS (3, 5- Dinitrosalicyclic acid) reagent. Bioethanol was obtained by fermentation of hydrolyzed substrates using Saccharomyces cerevisiae and was analyzed using qualitatively (Dichromate and FTIR methods) and quantitatively (Spectroscopic and Specific gravity methods). Our results indicated that Higher reducing sugar production efficiency (671.00 ± 3.00) was observed at 6% H2SO4 concentration on 10g biomass load. Lowest reducing sugar was recorded after hydrolysis of 5g biomass in 4% sulfuric acid. A promising alcoholic content (95 % v/v) and the existence of bioethanol by a combustion test shows Water hyacinth are also good sources of bioethanol. Generally, the FTIR spectroscopic investigation Conclude the product obtained from Water Hyacinth (Eichhornia crassipes) through acid hydrolysis, fermentation, and distillation was ethyl alcohol

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