从混合污水污泥中通过超声波辅助的聚酸酸盐生产:探索狂欢饥荒制度和微生物弹性
Khalid Z Elwakeel1, Mohamed El-Qelish2, Huda M Alghamdi1
1University of Jeddah, College of Science, Department of Chemistry, Jeddah, Saudi Arabia.
International journal of biological macromolecules
|May 31, 2025
概括
这项研究表明,通过超声波和微生物适应,从市政污泥中生产聚酸酸盐 (PHAs). 这种可持续的方法将废物污泥转化为高产量的有价值的生物塑料.
科学领域:
- 环境微生物学 环境微生物学
- 生物技术是生物技术.
- 废物管理 废物管理
背景情况:
- 城市污泥对废物管理构成了重大挑战.
- 开发可持续的废物利用方法至关重要.
- 聚酸酸 (PHAs) 是一种具有多种应用的可生物降解生物塑料.
研究的目的:
- 调查从城市污泥中生产PHAs的情况.
- 评估一种创新的超声波辅助微生物适应策略.
- 评估使用发酵污泥作为生物塑料合成原料的效率.
主要方法:
- 市政污泥在不同的超声波能量水平 (2500,10,000,20,000千杰克/公斤) 发酵.
- 混合微生物培养 (MMCs) 在测序批量反应器 (SBR) 中使用富含挥发性脂肪酸 (VFA) 的废水进行了适应.
- 使用乙酸盐作为主要碳源来优化PHA积累.
主要成果:
- 发酵产生了一种富含VFA的废水 (13.3 gCOD/L),其中酸盐是主要的VFA.
- PHA产量在0.415至0.482gPHA/gCOD之间.
- PHA积累效率达到了41.5%至48.2%.
结论:
- 市政污泥是PHA生产的可行且具有成本效益的原料.
- 超声波辅助的微生物适应是生物塑料合成的有效策略.
- 这种方法为废物回收和生物塑料制造提供了一个可持续的途径.
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