在生物甲化消化剂中进行先进的微藻培养,以最大限度地利用食物废弃物泄露的资源
Qingyu Shang1, Yixin Yan1, Yongnan Zhang1
1School of Civil Engineering, Southeast University, 210096, Nanjing, China.
Journal of environmental management
|July 5, 2025
概括
这项研究优化了使用食物废弃物消化剂的微藻种植. 高的有机负荷显著提高了生物质产量和营养回收,而光周期影响了Chlorella vulgaris中的脂质积累.
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:
- 城市固体废弃物的有机分数 (OFMSW) 的压缩液是酸性,具有挑战性的处理,但资源丰富.
- 无氧消化将OFMSW液转化为生物气和富含营养的消化物,适合生物质转化.
- 在食品废弃物压缩液 (FWPD) 中培育微藻提供了资源利用潜力,但最佳生长参数尚不清楚.
研究的目的:
- 调查有机载荷,光强度和光周期对Chlorella vulgaris生长的影响.
- 确定微藻生物质产量和FWPD的营养利用的最佳条件.
- 了解培养参数对微藻生物质生化成分的影响.
主要方法:
- 使用直角实验设计来评估FWPD中Chlorella vulgaris的生长.
- 在三个层面上研究了三个因素:有机负荷 (10.5152.55 g VS·L−1),光强度 (10003000 Lux) 和光周期 (816 h).
- 分析了微藻生物质产量,叶绿素含量,营养回收 (N,P) 和生物化学成分 (蛋白质,碳水化合物,脂质).
主要成果:
- 有机负荷是最有影响力的因素,52.55g VS·L-1最大限度地提高生物质产量,叶绿素,总和总回收.
- 较高的有机负载也促进了微藻生物质中的蛋白质和碳水化合物积累.
- 光周期是脂质积累的主要因素,而光强度的影响较小.
结论:
- 通过控制有机载荷和光周期,可以在FWPD中实现优化微藻种植.
- 高的有机负载增强营养回收和生物质生产,使FWPD成为Chlorella vulgaris的一个可行的媒介.
- 这项研究提供了关键数据,通过微藻种植来最大限度地从食物浪费中回收资源.
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