
微塑料对污泥厌氧消化影响的研究进展
包本涛, 马语慧, 夏子渊, 孙照勇, 苟敏, 汤岳琴
微塑料对污泥厌氧消化影响的研究进展
Research Progress of Effect of Microplastics on Anaerobic Digestion of Sludge
厌氧消化(AD)是污泥处置的主要手段,但污泥中共存的微塑料(MPs)会影响厌氧消化性能。文章综述MPs对污泥厌氧消化的影响及机制。结果表明:MPs的性质(种类、浓度、粒径)显著影响污泥厌氧消化性能,其中大多数MPs会抑制甲烷的生成,且抑制作用会随着MPs浓度的增加或粒径的减小而加强;MPs与其他污染物的协同作用以及消化工艺(预处理、温度、底物等)会影响MPs对厌氧消化的作用效果;MPs主要通过浸出物的释放、诱导活性氧(ROS)的产生、影响关键酶活性以及改变微生物的群落结构等方式影响污泥厌氧消化的性能。未来的研究应进一步探讨多种MPs的协同影响,识别MPs影响厌氧消化的关键因子,开发MPs抑制的缓解技术。
Anaerobic digestion (AD) is one of the important technologies for sludge disposal, but the coexistence of microplastics (MPs) in sludge will affect the performance of AD. The paper reviews the effects and mechanisms of MPs on AD of sludge. The results show that the MPs properties (type, concentration and size) significantly affect the AD performance of sludge. Most MPs inhibit the formation of methane, and the inhibition effect enhances with the increase of MPs concentration or the decrease of MPs size. The synergistic interaction between MPs and other pollutants, as well as the digestion process (pretreatment, temperature, substrate, etc.), will influence the effect of MPs on AD. MPs mainly affect the performance of sludge AD by releasing extract, inducing ROS production, affecting key enzyme activity, and changing microbial community structure. Future research should further explore the synergistic effects of various MPs, identify the key factors of MPs affecting AD, and develop mitigation technologies for MPs inhibition.
Microplastics / Sludge / Anaerobic digestion / Methane yield
X705 / X505
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