通过反应组学和分子网络分析,通过污泥热解来追踪生物炭中溶解有机物 (DOM) 的转化途径
Aibin Hu1, Yongliang Zheng1, Zheng Wang1
1Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization, Huanggang Normal University, China.
Chemosphere
|September 14, 2023
概括
泥生物炭衍生的溶解有机物 (SBC衍生的DOM) 在热解过程中通过级联反应转化. 控制高于500°C的热解温度至关重要,以最大限度地减少有害物质的产生.
科学领域:
- 环境化学环境化学
- 有机地化学 有机地化学
- 生物质热解是生物质的热解.
背景情况:
- 泥生物炭衍生的溶解有机物 (SBC衍生的DOM) 是复杂的.
- 了解它们在污泥热解过程中的转化对于环境应用至关重要.
研究的目的:
- 为了阐明在污泥热解过程中SBC衍生的DOM的转化途径.
- 为了确定关键的分子反应和温度依赖的变化.
- 为优化污泥热解过程提供理论支持.
主要方法:
- 基于富里埃变换离子循环子共振质谱法 (FT-ICR-MS) 的反应组学.
- 采用分子网络分析来研究DOM转换.
- 研究了不同温度范围内的热解反应.
主要成果:
- 从SBC衍生的DOM在热解过程中经历了多个阶段的级联反应.
- 素/碳酸盐丰富的环分子,蛋白质/合物和脂质表现出不同的反应性.
- 在400-500°C之间的热解产生危险的含N,碳和化合物.
- 分子复杂性和反应对随着温度的增加而下降.
- 最佳的热解温度在500°C以上,以减轻有害的副产品.
结论:
- 在污泥热解过程中,SBC衍生的DOMs的拟议转化途径.
- 确定了控制有害物质生成的临界温度值.
- 提供了对污泥热解中DOM转化机制的见解,以优化工艺.
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