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How Wood Chip Size Affects Pretreatment Effectiveness of Woody Biomass for Biological Processing.

机译:木屑尺寸如何影响木质生物质在生物加工过程中的预处理效果。

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摘要

Woody biomass is particularly resistant to breakdown and must be size reduced to make pretreatment with steam, acid, or other chemicals effective. However, because mechanical size reduction of woody biomass can consume significant amounts of energy, it is important to understand how to minimize size reduction, while still realizing high sugar yields from the combined operations of pretreatment and enzymatic hydrolysis. Thus, this study focused on determining how sugar yields change with particle size. Downscaled composition analysis and enzymatic hydrolysis were applied to different sized wood chips and powder of Populus tremuloides to examine whether wood chips could perform similarly to powder. It was found that above a certain pretreatment severity range (R0=3.8), large wood chips could give higher enzymatic sugar yields, so that size reduction is not always required, thus saving energy. Furthermore, models were applied to better understand whether heat transfer affected pretreatment effectiveness and establish maximum dimensions for high sugar release.
机译:木质生物质特别耐分解,必须减小尺寸以使使用蒸汽,酸或其他化学品进行预处理有效。然而,由于木质生物质的机械尺寸减小会消耗大量能量,因此重要的是要了解如何最大程度地减小尺寸减小,同时仍要通过预处理和酶促水解的组合操作实现高糖产量。因此,本研究集中于确定糖产量如何随粒度变化。对不同大小的木屑和杨木粉进行了缩减成分分析和酶水解,以检查木屑是否可以与粉末相似。发现在一定的预处理严重程度范围内(R0 = 3.8),大的木片可以提供更高的酶糖产量,因此并不总是需要减小尺寸,从而节省了能源。此外,还应用了模型来更好地了解热传递是否会影响预处理效果并确定高糖释放的最大尺寸。

著录项

  • 作者

    Tam, Jerry.;

  • 作者单位

    University of California, Riverside.;

  • 授予单位 University of California, Riverside.;
  • 学科 Engineering Chemical.;Engineering Environmental.
  • 学位 M.S.
  • 年度 2013
  • 页码 86 p.
  • 总页数 86
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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