半连续无氧消化的潜力,以减轻污泥中的抗生素
Amine Ezzariai1,2, Julie Jimenez3, Maialen Barret4
1INRAE, Univ. Montpellier, LBE, 102 Avenue Des Étangs, 11100, Narbonne, France. amine.ezzariai@um6p.ma.
Environmental science and pollution research international
|November 29, 2024
概括
无氧消化从污泥中部分去除了四种抗生素,并且大量去除了罗西胺素,氧基环素和基环素. 然而,恩洛夫洛克萨辛的去除能力有限,所有抗生素都在经过处理的污泥中持续存在.
科学领域:
- 环境科学 环境科学
- 环境化学环境化学
- 生物技术是生物技术.
背景情况:
- 抗生素是普遍存在的环境污染物.
- 了解它们在废水处理过程中的命运至关重要.
- 污泥无氧消化 (AD) 是一种常见的治疗方法.
研究的目的:
- 调查污泥无氧消化过程中四种常见的抗生素 (罗西胺素,氧化四环素,四环素,恩洛夫洛素) 的去除.
- 评估这些抗生素对AD过程效率的影响.
- 为了确定抗生素在消化的污泥中的持久性.
主要方法:
- 在37°C的半连续无氧消化.
- 在现实的度 (50微克/升) 中用抗生素入污泥.
- 加速溶剂提取 (ASE) 用于抗生素提取.
- 液体染色学-双重质谱学 (LC-MS/MS) 使用标准加法 (SAM) 进行量化.
主要成果:
- 总固体 (TS) 2.5μg/g的抗生素没有抑制甲的产生,固体的去除或化学氧气需求 (COD) 的去除.
- 对于罗西胺 (50%),氧化四环素 (100%) 和四环素 (59%) 观察到显著的去除率.
- 恩洛夫洛克萨的去除没有统计学意义 (36%),所有测试的抗生素都在消化的污泥中持续存在.
结论:
- 无氧消化可以从污泥中部分去除某些抗生素.
- 在AD过程中减轻,但不消除,抗生素释放.
- 在消化的污泥中,抗生素如罗西胺素,甲素和恩罗夫洛克萨的持续存在需要进一步的管理策略.
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