通过理论分析以及实验验证的结合,对活性碳协同太阳能干燥的机械探索
Binqi Rao1, Taotao Zhao1, Houde Tu2
1College of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou 310018, China.
Waste management (New York, N.Y.)
|February 22, 2025
概括
活性碳协同太阳能 (ACSS) 技术显著提高了污泥干燥效率. 这种方法使用太阳能激活碳,快速降低水分含量,改善孔隙结构,以更好地减少污泥.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 市政污泥积累带来了重大的环境挑战.
- 太阳能干燥是一种经济的污泥减少方法,但效率低,干燥时间长.
- 需要新的技术来提高污泥管理的太阳能干燥性能.
研究的目的:
- 调查活性碳协同太阳能 (ACSS) 技术对加强城市污泥干燥的有效性.
- 量化关键参数对污泥干燥速度和水分含量的影响.
- 阐明ACSS技术在污泥性质上的潜在机制.
主要方法:
- 使用碎形维度和扫描电子显微镜进行泥孔结构分析.
- 表面元素分析和UV-VIS-NIR光谱检测光吸收性.
- 在不同的条件下 (泥厚度,光强度,活性碳含量) 实验量化干燥速度 (Dr) 和水分含量 (Mc).
主要成果:
- 与单次太阳能干燥相比,ACSS技术显著提高了干燥速度,降低了水分含量.
- 最佳条件包括薄层污泥 (0.5厘米),中度光强 (1千瓦/米2),2%活性炭,在120分钟内将水分从83%降低到29.96%.
- 添加活性炭增加了污泥碎片尺寸,表明更复杂的孔隙结构,并改善了全谱光吸收性.
结论:
- ACSS技术提供了一种高效和高效的方法来减少城市污泥.
- 增强的光热转换效率归因于改善的孔隙结构和光吸收性.
- 这项研究为优化污泥处理的太阳能干燥技术提供了宝贵的见解和指导.
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