Study on saccharification of cotton straw by dilute acid hydrolysis assisted with microwave

Microwave radiation was used in the acid hydrolysis of cotton straw into reducing sugar.The effect of microwave irradiation temperature,microwave irradiation time,solid-liquid ratio and sulfuric acid concentration were measured.The results showed that the best conditions of microwave-assisted dilute acid hydrolysis of cotton straw into reducing sugar were microwave irradiation temperature 80 ℃,microwave irradiation time 50 min,solid-liquid ratio 1 ∶ 16 g/m L,and sulfuric acid concentration 3.0%.The order of the saccharification parameters that the yield ratio of reducing sugar was as follows:solid-liquid ratio microwave irradiation temperature sulfuric acid concentration microwave irradiation time.Under this optimal condition,the yield ratio of reducing sugar could reach 3.17%.