改变pH值的热修饰对污水泥的影响:重点是释放含和的物质
Rui Liu1, Ying Xu2, Jiachang Cao1
1State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
Water research
|May 11, 2024
概括
pH 和热量修改有效地从污水污泥中释放营养物质. 这项研究揭示了和回收的机制,优化了污泥利用的营养回收.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
背景情况:
- 污水污泥含有有价值的营养素,但很难加工.
- 从污泥中回收营养素对于可持续性至关重要.
- 现有的方法缺乏全面了解pH值变化的热变化.
研究的目的:
- 通过使用pH值变化的热修饰,研究污泥中释放的营养物质.
- 在广泛的pH频谱中阐明营养成分释放的机制.
- 确定修改对污泥特性和相互作用的影响.
主要方法:
- 对营养成分,物理化学性质,分子结构和非共价相互作用的全面分析.
- 在一致的热条件下,pH变化的热变化 (pH2.012.0).
- 关键指标的统计分析.
主要成果:
- 含有 (N) 的有机物释放后有着类似的功能 (R2:0.740.96).
- 质子和基离子通过碳基组质子化/解质子化和静电相互作用影响N释放.
- 与N相比, (P) 释放显示出与pH相关的不同行为.
- 高质子/基度降低了污泥的粘弹性和结合强度.
结论:
- 随着pH值的变化而发生的热修饰对于污泥营养回收是有效的.
- 释放N和P的机制不同,受静电和Lifshitz-van der Waals相互作用的影响.
- 这些发现支持优化从污泥中进行特征特定的N/P回收的方法.
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