Scholarlink

<p>Rice straw can be a valuable fiber raw material as a substitute of wood for the pulp and paper industry. However, rice straw is underutilized due to technical challenges in the pulping processes. In this study, a novel bio-chemi-mechanical pulping combines high-temperature aerobic fermentation pretreatment with alkaline hydrogen peroxide impregnation and two-stage mechanical refining. Firstly, aerobic fermentation destroyed the fiber structure of rice straw, loosened the connecting bond between carbohydrates and lignin and made the surface of rice straw rough and porous through microbial decomposition of lignocellulose. Subsequently, the molecular structure of rice straw was further altered by the synergistic action of NaOH and H<sub>2</sub>O<sub>2</sub>, and the efficiency of mechanical refining was further improved based on aerobic fermentation pretreatment at high-temperature (max. ~ 65–70&#xa0;°C). Experimental results show that under the optimal process conditions, the fermentation pre-treatment resulted in about 65% energy saving, 27% water retention value improvement, and 112% increase in tensile strength at a given pulp freeness. The objective of this study is to transform rice straw lignocellulosic biomass into high-quality pulp with improved physical properties, while simultaneously lowering energy consumption.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Pulping rice straw using aerobic fermentation coupled with alkaline hydrogen peroxide treatment and mechanical refining

  • 期刊论文

  • 发表日期：

    2025年12月19日

查看全文
  • Long Liang,
  • Xinyi Shao,
  • Huyi Zhou,
  • Shanming Han,
  • Hongbin Li,
  • Zhibin He,
  • Kuizhong Shen,
  • Guigan Fang,
  • Ting Wu

摘要

Rice straw can be a valuable fiber raw material as a substitute of wood for the pulp and paper industry. However, rice straw is underutilized due to technical challenges in the pulping processes. In this study, a novel bio-chemi-mechanical pulping combines high-temperature aerobic fermentation pretreatment with alkaline hydrogen peroxide impregnation and two-stage mechanical refining. Firstly, aerobic fermentation destroyed the fiber structure of rice straw, loosened the connecting bond between carbohydrates and lignin and made the surface of rice straw rough and porous through microbial decomposition of lignocellulose. Subsequently, the molecular structure of rice straw was further altered by the synergistic action of NaOH and H2O2, and the efficiency of mechanical refining was further improved based on aerobic fermentation pretreatment at high-temperature (max. ~ 65–70 °C). Experimental results show that under the optimal process conditions, the fermentation pre-treatment resulted in about 65% energy saving, 27% water retention value improvement, and 112% increase in tensile strength at a given pulp freeness. The objective of this study is to transform rice straw lignocellulosic biomass into high-quality pulp with improved physical properties, while simultaneously lowering energy consumption.