Optimization of pretreatment in delignification of hyacinth biomass for ethanol production

Water hyacinth ( Eichhornia crassipes ) is one of the potential feedstocks for bioethanol production due to their higher cellulose content. It needs optimization pretreatment remove lignin and release hemicellulose from lignocellulosic complex. Pretreatment was done using sulfuric acid, sodium hydroxide, calcium hypochlorite as soaking agents. Experiment carried out at 121 °C 15 minutes. with 1% acid decreased by 6.74%, 4.0% hydroxide reduced content 11.23%, whereas 0.3% removed 8.30% original substrate. Therefore, showed highest efficacy in delignification processes, followed hypochlorite, pretreatments. Keywords: Lignin reduction; Lignocellulose; Pretreatment;