彻底改变环境卫生:通过共同消化高固体含量食品废物,提升便渣的价值,并为无氧消化稳定性剂量金属纳米材料
Hamza Hassan Yusuf1, Xiaofang Pan1, Zhi-Long Ye2
1Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Journal of environmental management
|January 26, 2024
概括
这项研究探讨了在高固体无氧共消化中使用便渣和食物废物,并增强了纳米-性铁. 纳米零价铁显著提高了甲的产量,改善了发展中国家的卫生管理.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 废物管理 废物管理
背景情况:
- 分散的卫生是联合国可持续发展目标和中国所革命的关键.
- 化池中的便渣 (FS) 是发展中国家面临的一个挑战.
- 可持续的废物管理需要精明地利用FS.
研究的目的:
- 通过高固体无氧共消化 (HSAD) 来研究便渣 (FS) 与食品废物 (FW) 的共消化.
- 评估金属纳米材料,纳米零价铁 (nZVI) 和磁铁 (Fe3O4) 对HSAD效率的影响.
- 了解微生物的通路和稳定性在不同的固体含量下.
主要方法:
- 在HSAD条件下FS和FW的同时消化,总固体 (TS) 含量不同 (10-25%).
- 添加纳米零价铁 (nZVI) 和磁铁 (Fe3O4) 来评估它们对甲产量的影响.
- 对微生物群落和参与碳降解和甲基生成的代谢途径的分析.
主要成果:
- 与Fe3O4.4相比,nZVI添加导致所有TS度的累积甲产量最高.
- 甲产量随着nZVI显著增加,在15%的TS下达到371.36mL/gVS.
- 微生物分析揭示了代谢途径的转变,其中Syntrophaceticus和性甲基生物确保了在高固体条件下的稳定性.
结论:
- 将FS和FW与nZVI共同消化是一种增强生物气生产的有希望的策略.
- nZVI通过促进的生产和丰富特定的微生物群落来提高HSAD的效率.
- 这种方法为便废物管理提供了可持续的解决方案,有助于实现全球卫生目标.
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