期刊
BIORESOURCE TECHNOLOGY
卷 337, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2021.125379
关键词
Benzenesulfonic acid; Lignocellulose separation and utilization; Enzymatic saccharification; Lignocellulosic nanofibrils; Lignin nanoparticles
资金
- Nanjing IPE Institute of Green Manufacturing Industry [YFW2020071]
- Foundation of State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology [KF201917]
- National College Students Innovation and Entrepreneurship Training Program [201910298155H]
- Shandong Academy of Sciences
This study introduces benzenesulfonic acid as a green hydrotrope for efficient lignocellulose conversion, resulting in high-value building materials and lignin nanoparticles. The method not only removes lignin effectively, but also improves enzymatic hydrolysis efficiency and reduces entangled lignocellulosic nanofibrils, presenting a promising and simple technology for lignocellulose separation and utilization under mild conditions.
Developing low-cost and sustainable fractionation technology is the key to achieve the maximal utilization of lignocellulosic biomass. This study reported benzenesulfonic acid (BA) as a green hydrotrope for efficient lignocellulose conversion into two fractions at atmospheric pressure: (1) a primarily cellulosic solid residue that can be utilized to produce high-value building blocks (lignocellulosic nanomaterials or sugars), and (2) the collected spent acid liquor that can be diluted with anti-solvent to easily obtain lignin nanoparticles. BA hydrotropic method exhibited greater reaction selectivity to solubilize lignin, where approximately 80% lignin were removed at only 80 degrees C in 20 min. The lower lignin content substrates resulted in relatively higher enzymatic hydrolysis efficiency of 80% and less entangled lignocellulosic nanofibrils (LCNF). Furthermore, the separated lignin particles size can be easily adjusted by the initial acid concentration. Overall, this work presented a promising and simple technology in achieving lignocellulose separation and utilization under mild conditions.
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