Comparison of various pretreatments for ethanol production enhancement from solid residue after rumen fluid digestion of rice straw.

摘要: Abstract The rumen digested residue of rice straw contains high residual carbohydrates, which makes it a potential cellulosic ethanol feedstock. This study evaluated the feasibility and effectiveness applying microwave assisted alkali (MAP), ultrasound (UAP), ball milling pretreatment (BMP) to enhance production from two residues (2.5%-DR 10%-DR) after fluid digestion at 2.5% 10.0% solid content. Results revealed that 2.5%-DR 10%-DR had cellulose content 36.4% 41.7%, respectively. MAP UAP improved enzymatic hydrolysis by removing lignin hemicellulose, while BMP decreasing particle size crystallinity. was concluded as suitable pretreatment, resulting in an yield 116.65 147.42 mg g −1 for 10%-DR, integrated system including achieved maximum energy output 7010 kJ kg .