草药废弃物的热水碳化:过程参数的优化,二次碳形成及其对碳水化合物特性的影响
Yao Luo1, Tie Mi1, Fang Huang1
1School of Environment and Health, Jianghan University, Wuhan, 430056, China; Hubei Gas Purification Enterprise-School Joint Innovation Center, Jianghan University, Wuhan, 430056, China.
Journal of environmental management
|March 8, 2025
概括
草药废弃物 (HMW) 水热碳化 (HTC) 使用中央复合设计 (CCD) 进行了优化. 详细介绍了二次炭 (SC) 形成机制及其对炭 (HC) 性能的影响,揭示了SC影响燃烧特性.
科学领域:
- 生物质转换生物质转换
- 废弃物价值化 废弃物价值化 废弃物价值化
- 化学工程是化学工程的重要组成部分.
背景情况:
- 草药废物 (HMW) 是一种高湿度的有机固体废物,具有碳中和资源潜力.
- 水热碳化 (HTC) 是一个有前途的技术,用于将湿生物质转化为有价值的 (HC).
- 在HMW HTC过程中二次炭 (SC) 的形成和影响尚未完全理解,影响了炭的特性和利用.
研究的目的:
- 使用响应表面方法优化草药废弃物 (HMW) 的水热碳化 (HTC) 工艺条件.
- 研究二次炭 (SC) 的形成机制及其对 (HC) 特性的影响.
- 分析受二次性炭影响的碳化合物的燃烧特性.
主要方法:
- 中心复合设计 (CCD) 是一种响应表面方法,用于确定最佳的HTC条件,减少实验试验.
- 分析初级炭 (PC),二级炭 (SC) 和水炭 (HC) 的物理和化学特性,以阐明SC的形成.
- 碳化合物的燃烧特性分析,以评估二次碳化合物的影响.
主要成果:
- 中央复合设计 (CCD) 从125个实验组显著减少到20个,优化了时间和成本.
- 确定二次炭 (SC) 主要由,有机酸和组成,通过解和凝结纤维素成分形成.
- 观察到二次焦炭 (SC) 是一种与初级焦炭 (PC) 连接的无形固体,通过降低峰值减肥温度和增加反应速度,对碳 (HC) 燃烧产生负面影响.
结论:
- 该研究建立了一个可靠的响应模型,并确定了HMW HTC的最佳条件.
- 在HTC期间,提出了一种由半纤维素,纤维素和可溶性红素生成SC的机制.
- 二次炭 (SC) 显著影响炭 (HC) 的特性和燃烧行为,需要考虑通过HTC利用高价值生物质.
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