无氧消化作为一种可持续技术,在碳中和循环经济的背景下有效利用生物质
Paruchuri M V Subbarao1, Tinku Casper D' Silva2, Komalkant Adlak2
1Department of Mechanical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
Environmental research
|June 1, 2023
概括
无氧消化 (AD) 是一种可持续的技术,通过将废物转化为沼气来减少碳排放. 优化AD过程和基质选择是最大限度地提高其低碳效益和实现循环经济的关键.
科学领域:
- 环境科学 环境科学
- 可再生能源工程可再生能源工程
- 废物管理 废物管理
背景情况:
- 全球变暖是由化石燃料和废物的碳排放驱动的,需要可持续的替代方案.
- 可再生能源和有效的废物管理对于实现碳中和至关重要.
- 无氧消化 (AD) 是一个有前途的低碳技术,它结合了废物管理和可再生能源生产.
研究的目的:
- 阐明影响无氧消化 (AD) 低碳特征的内部和外部因素.
- 探索能源-大气-农业联系中的AD系统的潜力.
- 绘制与AD相关的碳排放图,并确定增强可持续性和循环经济整合的途径.
主要方法:
- 关于无氧消化技术及其子系统的综合文献综述.
- 对AD工艺的碳排放映射分析,包括基质供应,生物气生产和消化物管理.
- 生命周期评估前景和确定关键环境影响指标 (气候变化,酸化潜力).
主要成果:
- 防腐系统的每个阶段都会对总体的碳排放潜力产生重大影响,受设计,运行和维护的影响.
- 最佳的基质选择和共同消化策略,以及适当的消化处理,可以大幅减少AD的碳足迹.
- 在印度实施使用农业残渣,动物废弃物和城市固体废弃物的AD可以将人均年度碳排放量减少3.5-3.8公斤CO2-eq.
结论:
- 无氧消化为实现碳中和和循环经济原则提供了一条可行的途径.
- 谨慎管理AD系统,从基质采购到消化利用,对于最大限度地提高环境效益至关重要.
- 政策和立法框架对于促进AD采用和整合低碳和循环经济目标至关重要,特别是在印度等发展中经济体.
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