earticle

영어

Bioethanol (C2H5OH) is the most attractive biofuel that can be directly applied to gasoline engines. The alcohol fuel originated from non-crop biomass has been generally produced through three steps: pretreatment, enzymatic hydrolysis and fermentation. Although many researchers have been trying to improve the conversion yields from biomass to mono-sugars through chemical/physical pretreatment and enzymatic hydrolysis processes, a large amount of organic residue has been reported to be generated as a byproduct. This residue may be reused as another feedstock in syngas platform like pyrolysis. In this study, therefore we explored the thermal decomposition characteristics of organic residue generated by a pretreatment process for bioethanol production from seaweed, which is one of the promising feedstocks. Pretreatment of a marine biomass, Ulva sp., with acid or alkaline solutions and hydrolytic enzymes resulted in organic residues as well as sugars-containing solutions. The thermal degradation patterns of the
residues were examined by thermogravimetric analysis (TGA) with different thermal analysis (DTA).