描述石墨烯氧化物废物流并评估其对无氧共消化与市政污泥的影响
Milad Goodarzi1, Mohammad Arjmand2, Cigdem Eskicioglu3
1UBC Bioreactor Technology Group, School of Engineering, University of British Columbia, Kelowna, BC, V1V 1V7, Canada; Nanomaterials and Polymer Nanocomposites Laboratory, School of Engineering, University of British Columbia, Kelowna, BC, V1V 1V7, Canada.
Journal of environmental management
|September 6, 2024
概括
无氧共消化有效地管理纳米材料废物,准确量化有机含量并促进生物甲生产. 这种可持续的方法还允许在土壤修改中使用氧化石墨烯 (GO).
科学领域:
- 环境科学与工程环境科学与工程
- 生物技术和生物工程 生物技术和生物工程
- 材料科学 材料科学 材料科学
背景情况:
- 纳米材料合成产生有机污染的废物流,这给环境带来了挑战.
- 石墨烯氧化物 (GO) 分散,通常被乙醇污染,需要有效的管理策略.
- 在这种流中进行有机含量分析的传统方法具有局限性.
研究的目的:
- 评估无氧共消化作为一种处理污染了乙醇的GO废物的方法.
- 精确量化有机含量,并提高这些废物流中的生物甲回收.
- 为了研究GO纳米片和乙醇在无氧消化中的协同作用.
主要方法:
- 乙醇污染的GO分散物与城市污泥的无氧共消化.
- 使用新方法量化有机含量,并与总化学氧气需求 (tCOD) 进行比较.
- 分析甲生产动力学和产量.
- 使用拉曼光谱 (ID/IG比率和G频段转移) 进行GO减量的表征.
主要成果:
- 拟议的方法在检测有机含量方面实现了93-97%的准确性,比tCOD方法 (75-77%) 优越.
- 同消化增加了17.6%的特定甲产量和284%的总甲产量.
- 观察到GO和磁性GO的生物降解,导致它们分裂成固态.
结论:
- 无氧共消化是一种高效的策略,用于利用有机污染的纳米材料废物.
- 和乙醇的协同作用显著增强了生物甲的生产.
- 减少的GO可以用于土壤修改的消化剂中,提供微量营养素的缓慢释放.
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