Inhibition of aged microplastics and leachates on methane production from anaerobic digestion of sludge and identification of key components

Wang, Xinying; Zhang, Yan; Zhao, Yanping; Zhang, Lei; Zhang, Xuxiang

doi:10.1016/j.jhazmat.2022.130717

Cited by 31 publications

(1 citation statement)

References 47 publications

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“…A study investigating the effects of different aged MPs and their leachates on anaerobic methanogenesis of sludge suggested that the inhibition of methanogenesis by MPs is primarily due to the leachates, which induce oxidative stress, damage microbial cells, and reduce microbial activity [78]. High concentrations (0.5 g/kg VS) of PVC-MPs, especially when combined with hydrothermal pretreatment, reduced methane production by 16.2% due to accelerated release of toxic substances like dibutyl phthalate, dimethyl phthalate, and Bisphenol A, impacting microbial activity [79].…”

Section: Effect On Methanogenesismentioning

confidence: 99%

Enhancing Biogas Production Amidst Microplastic Contamination in Wastewater Treatment Systems: A Strategic Review

Otieno,

Cydzik-Kwiatkowska,

Jachimowicz

2024

Energies

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This review highlights the significant interaction between microplastic (MP) pollution and its impact on wastewater treatment systems, focusing on optimizing biogas production. We explore various sources of MPs, including tire-derived MPs, and their introduction into wastewater environments. This review delves into the mechanical and physicochemical challenges MPs pose in treatment processes, emphasizing the need for comprehensive mitigation strategies. The biological effects of MPs on microbial consortia essential for biogas production are analyzed, particularly how these pollutants interfere with each stage of anaerobic digestion—hydrolysis, acidogenesis, acetogenesis, and methanogenesis—and, consequently, biogas generation. We examine MPs’ quantitative and qualitative impacts on biogas output and production rates, uncovering how MPs disrupt microbial activity in these stages. This review also discusses novel mitigation strategies combining different sludge pretreatment methods with MPs. Our goal is to enhance the sustainability of wastewater management by promoting efficient biogas production and environmental protection in the presence of persistent MP contamination.

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Section: Effect On Methanogenesismentioning

confidence: 99%