Comparative study of wet and dry properties on enzymatic hydrolysis efficiency of poplar with various combined-pretreatment

Abstract

In this work, the combined pretreatment of sulfuric acid and alkaline (SA), solid acid and organic solvent (SO) and phosphoric acid and peroxide (PHP) on poplar was used to thoroughly evaluate the effects of wet and dry processing on enzymatic digestibility. The finding showed a negative connection between increasing glucose yield and rising drying temperature. Moreover, research showed that wet processing is beneficial because it improve mass transfer and permeability for enzymatic liquefaction. Enzymatic hydrolysis was additionally increased by mechanical wet milling following combined pretreatment. Most importantly, SO pretreatment was superior to PHP because SO pretreatment had a stronger linear relationship between particle size and glucose yield. Wet-milled post-treatment followed by SO combined pretreatment produced an acceptable glucose yield (91.93%). In comparison to the untreated poplar, the glucose yield had an increase by 87.14%. This work offers a novel processing method that might serve as a theoretical sound foundation for the effective saccharification of poplar wood.