水产养殖的便废物在无氧消化过程中产生不同的产品,具体取决于营养成分
Elisavet Syropoulou1, Detmer Sipkema2, Sophie Elise Smit1
1Aquaculture and Fisheries Group, Wageningen University & Research, the Netherlands; Laboratory of Microbiology, Wageningen University & Research, the Netherlands.
Journal of environmental management
|October 10, 2024
概括
富含未消化的营养素的养殖场废物可以成为脱化碳的碳来源. 来自高蛋白与碳水化合物比率的饮食中的便的消化产生有机酸,主要是酸,适合循环水产养殖系统.
科学领域:
- 水产养殖是水产养殖的一种方式.
- 环境微生物学 环境微生物学
- 废物管理 废物管理
背景情况:
- 水性料中的碳水化合物含量影响了富含营养的便废物.
- 未消化的便在再生循环水产养殖系统 (RAS) 中带来了挑战.
- 富含营养的便废物可以成为脱化碳的来源.
研究的目的:
- 评估鱼作为RAS中脱的内部碳来源的潜力.
- 为了研究饮食成分对无氧消化过程中的便有机酸 (OA) 生产的影响.
- 评估便消化过程中的营养溶解和 prokaryotic 社区变化.
主要方法:
- 在14天内无氧消化来自六种不同饮食的欧洲海便.
- 测量营养物质溶解率 (COD,TKN,TP) 和有机酸产量.
- 使用16S rRNA测序对 prokaryotic 社区组成的分析.
主要成果:
- 饮食中蛋白质与碳水化合物比例较高的便废物产生了更多的OAs,其中乙酸盐占主导地位.
- 贝 (SSM) 便显示了最高的OA产量.
- Prokaryotic 组成显示了微小的变化,但特定的 taksa 与 OA 生产相关 (例如,乳酸盐,丁酸盐).
- 与OA生产和酸化相关的最小氨释放和溶解.
结论:
- 来自特定水产料成分的便废物可以作为RAS中脱的有效内部碳来源.
- 饮食调整可以优化便废物中的OA产量,以提高脱.
- 这种方法通过利用废弃营养物质来促进水产养殖的循环.
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