Journal
CHEMSUSCHEM
Volume 11, Issue 6, Pages 1121-1131Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201702090
Keywords
biomass; carbohydrates; enzymatic hydrolysis; pretreatment; redox chemistry
Funding
- UGC, New Delhi, India
- RBI, Georgia Tech., USA
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The pretreatment of lignocellulosic biomass plays a vital role in the conversion of cellulosic biomass to bioethanol, especially for softwoods and hardwoods. Although many pretreatment technologies have been reported so far, only a few pretreatment methods can handle large woodchips directly. To improve the efficiency of pretreatment, existing technologies require the grinding of the wood into small particles, which is an energy-consuming process. Herein, for the first time, we report a simple, effective, and low-temperature (approximate to 100 degrees C) process for the pretreatment of hardwood (HW) and softwood (SW) chips directly by using a catalytic system of FeCl3/NaNO3 (FCSNRC). The pretreatment experiments were conducted systematically, and a conversion of 71.53 and 70.66% of cellulose to sugar could be obtained for the direct use of large HW and SW chips. The new method reported here overcomes one of the critical barriers in biomass-to-biofuel conversion, and both grinding and thermal energies can be reduced significantly.
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