Abstract
AbstractIn this work, a fatty alcohol polyoxyethylene ether based nonionic surfactant named JFC−M was introduced into a dilute phosphoric acid plus steam explosion of poplar for the enhancement of fermentable sugar production. Factors influenced the pretreatment efficiency such as JFC−M, phosphoric acid, steam explosion pressure, and residence time were optimized by single factor and orthogonal test. An 86.3 % cellulose recovery rate was achieved. Besides, an 85.7 % enzymatic saccharification rate was obtained under the optimized parameters as follows: 1 : 2.5 solid/liquid rate, 2 h pre‐soaking time, 1.0 v/v% JFC−M, 2.0 wt% phosphoric acid, 2.2 MPa steam explosion pressure, 120 s residence time. The morphological and structural characteristics of samples before and after pretreatment were characterized by scanning electron microscopy, X‐ray diffraction, and Fourier transform infrared techniques, showing that the adding of JFC−M was of a notable influence on overcoming the biomass recalcitrance of feedstock and boosting cellulose digestion.
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