A biorefinery scheme to fractionate bamboo into high-grade dissolving pulp and ethanol
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- 作者：Zhaoyang Yuan ; Yangbing Wen ; Nuwan Sella Kapu ; Rodger Beatson…
- 关键词：Bamboo ; Alkaline pretreatment ; Dissolving pulp ; Bioethanol ; Silica ; Lignin
- 刊名：Biotechnology for Biofuels
- 出版年：2017
- 出版时间：December 2017
- 年：2017
- 卷：10
- 期：1
- 全文大小：1586KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Biotechnology; Plant Breeding/Biotechnology; Environmental Engineering/Biotechnology; Renewable and Green Energy; Renewable and Green Energy; Microbiology;
- 出版者：BioMed Central
- ISSN：1754-6834
- 卷排序：10
文摘
BackgroundBamboo is a highly abundant source of biomass which is underutilized despite having a chemical composition and fiber structure similar as wood. The main challenge for the industrial processing of bamboo is the high level of silica, which forms water-insoluble precipitates negetively affecting the process systems. A cost-competitive and eco-friendly scheme for the production of high-purity dissolving grade pulp from bamboo not only requires a process for silica removal, but also needs to fully utilize all of the materials dissolved in the process which includes lignin, and cellulosic and hemicellulosic sugars as well as the silica. Many investigations have been carried out to resolve the silica issue, but none of them has led to a commercial process. In this work, alkaline pretreatment of bamboo was conducted to extract silica prior to pulping process. The silica-free substrate was used to produce high-grade dissolving pulp. The dissolved silica, lignin, hemicellulosic sugars, and degraded cellulose in the spent liquors obtained from alkaline pretreatment and pulping process were recovered for providing high-value bio-based chemicals and fuel.