构建聚乳酸塑层微生物群,以增强脱化生物过器中的酸盐减少
Yanxi Chen1, Mengzhen Huang1, Yue Fu1
1School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology (Sun Yat-sen University), Guangzhou 510275, PR China.
Bioresource technology
|November 22, 2024
概括
可生物降解的聚乳酸 (PLA) 吸管可以在脱生物过器中重复使用,显著改善了酸盐的去除. 这种塑料再利用策略还支持独特的微生物群落,以有效处理废水.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 材料科学 材料科学 材料科学
背景情况:
- 开发可持续的方法来重复使用可生物降解塑料至关重要.
- 聚乳酸 (PLA) 是一种常见的可生物降解塑料,具有新的应用潜力.
- 废水处理依赖于高效的脱过程.
研究的目的:
- 为了研究使用聚乳酸 (PLA) 作为传统陶介质在脱生物过器中的替代品的有效性.
- 评估PLA对酸盐去除效率和微生物群落结构的影响.
- 探索PLA作为废水处理中的碳来源和生物膜载体的潜力.
主要方法:
- 使用PLA和传统商业陶介质 (CCM) 的脱化生物过器的长期运行.
- 监测酸盐去除效率和氨废水.
- 使用元基因组测序分析微生物社区结构.
- 隔离和表征PLA降解细菌.
主要成果:
- 用PLA取代CCM显著提高了酸盐去除效率 (从32.68-54.39%提高到41.64-66.26%).
- PLA促进了独特的脱微生物群落 (Bacillus, Pseudomonas, Acidovorax) 和减少了随机组装.
- 与CCM生物膜相比,PLA生物膜表现出更强的代谢能力,用于脱和糖解.
- 从PLA中分离出来的一种Bacillus菌株 (P01) 显示出强大的PLA脱聚合能力.
结论:
- 聚乳酸 (PLA) 是脱生物过器中CCM的有效替代品,可以提高处理性能.
- 酸作为碳源和生物膜载体,促进有效的微生物脱.
- 这项研究提出了一个有希望的方法,将可生物降解塑料的再利用与废水处理技术相结合.
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