在无氧消化物中改善了微藻生长和脂质生产,在无氧消化物中进行紫外线辐射预处理
Haolian Xu1, Yongdong Chen1, Donghai Yang1
1State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
The Science of the total environment
|March 1, 2024
概括
紫外线 (UV) 消毒是一种有效的,低成本的方法,用于消毒微藻种植的无氧消化物. 这种15分钟的紫外线处理可以增强微藻的生长,脂质的产生和营养的去除,因此非常适合大规模的应用.
科学领域:
- 环境生物技术环境生物技术
- 微藻种植的培养方法
- 污水处理 污水处理 污水处理
背景情况:
- 无氧消化物的灭菌对于微藻种植至关重要,但可以抑制其生长.
- 需要有效和低成本的消毒方法来进行大规模的微藻生产,使用消化剂.
研究的目的:
- 为了确定一种最佳的,低成本的消毒预处理无氧消化物用于微藻种植.
- 评估对微藻生长,脂质产生和营养物质去除的自封化,紫外线和NaClO处理的疗效.
主要方法:
- 市政无氧消化剂使用自封,紫外线或NaClO处理进行了灭菌.
- 微藻,Scenedesmus quadricauda,在稀释的消化物中培养,用于脂质生产和营养物质的去除.
- 评估了微生物群落分析和营养物质去除效率.
主要成果:
- 15分钟的紫外线处理有效地减轻了污染,并提高了营养素的可用性,相当于自动封锁.
- 实现了COD (93.30%),NH4+-N (92.56%),TN (85.82%) 和TP (95.12%) 的高清除效率.
- 紫外线处理导致最大的脂质含量 (48.19%) 由于协同微生物活动和营养竞争.
结论:
- 15分钟的紫外线处理是一种成本效益高效的方法,用于消毒微藻种植的无氧消化物.
- 紫外线处理支持强大的微藻生长,高脂积累和显著的营养物质去除.
- 这种方法适用于大规模的微藻种植,促进生物质生产和废水整治的同时进行.
相关概念视频
01:25Microbial Bioremediation of Uranium
Microorganisms play a critical role in the transformation and immobilization of uranium in contaminated environments through four main pathways: bioreduction, biosorption, bioaccumulation, and biomineralization. These mechanisms reduce uranium’s toxicity and prevent its migration through groundwater systems, offering sustainable approaches for in situ bioremediation.Bioreduction of UraniumBioreduction is driven by anaerobic bacteria such as certain strains of Geobacter and Shewanella, which use...
01:26Microbial Bioremediation of Hydrocarbons
Bioremediation is an environmentally sustainable process that employs living organisms—primarily microorganisms—to degrade or neutralize pollutants from contaminated environments. In oil spills and hydrocarbon pollution, bioremediation involves the use of hydrocarbon-degrading bacteria to transform toxic compounds into less harmful substances. This approach leverages natural microbial metabolic processes and is considered both cost-effective and ecologically favorable compared to physical or...
01:25Biofuels
The microbial conversion of organic matter into biofuels holds potential as a renewable energy source. Among biofuel sources, microalgae are recognized as a highly efficient and adaptable feedstock for biodiesel production, owing to their rapid biomass accumulation, elevated lipid productivity, and capacity to proliferate in diverse aquatic systems, including freshwater, marine, and wastewater habitats. Unlike terrestrial crops, microalgae do not compete for land and can achieve significantly...