通过发酵连续生产高度氨
Masoud Makian1, Seongwon Im2, Alsayed Mostafa3
1Department of Smart-city Engineering, Inha University, 100 Inha-ro, Michuhol-gu, Incheon 22212, Republic of Korea.
Bioresource technology
|December 17, 2023
概括
研究人员通过连续发酵,从消化物中增强了氨 (NH3) 产量,达到创纪录的度,并减少了提取的能源消耗. 这种生物方法提高了氨回收效率.
科学领域:
- 生物技术是生物技术.
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 氨 (NH3) 是一种有价值的资源和能量载体,推动了对无氧消化物有效提取的研究.
- 高度的氨抑制了甲基生物,将总氨 (TAN) 限制在1-4gN/L,并增加了提取能源成本.
研究的目的:
- 通过在连续发酵模式下通过生物反应来研究增强氨生产.
- 探索增加凝输入对氨度和体积生产率的影响.
- 评估微生物群落的变化及其与氨耐受性和提取效率的相关性.
主要方法:
- 连续发酵过程,凝输入量逐步增加 (10至150克COD/L).
- 监测氨度 (TAN) 和体积生产率.
- 分析微生物群落的转变,特别是Hathewaya物种的主导地位.
- 氨剥离实验,以评估提取的能源消耗.
主要成果:
- 氨度和体积生产率随着凝输入增加,达到前所未有的12.0g TAN-N/L和36.0g NH3-N/L/d的水平.
- 微生物分析显示,在增加的氨暴露下,Hathewaya主导地位 (1%至68%) 显著转变,表明耐受性提高.
- 氨去除结果显示,从高度缩的汁中提取氨的特定能源消耗减少了三倍.
结论:
- 连续发酵与优化的凝输入显著提高了从消化剂的氨产量.
- 微生物占主导地位的转变,特别是向Hathewaya转变,对于实现高氨耐受性和生产率至关重要.
- 缩氨大大降低了取氨所需的能量,提高了工艺经济性和可持续性.
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