Interaction between Microplastics and Pathogens in Subsurface System: What We Know So Far

Zhao, Hongyu; Hong, Xiaotao; Chai, Juanfen; Wan, Bo; Zhao, Kaichao; Han, Cuihong; Zhang, Wenjing; Huan, Huan

doi:10.3390/w16030499

Cited by 6 publications

(2 citation statements)

References 145 publications

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“…Although evidence has been built up during the past decade, MPs have only recently started to be in the spotlight as pathogens carriers [43], mainly due to the fact that pollution with such agents is growing, and pathogens may use these durable fragments to hitchhike long distances in water [44,45]. Therefore, the purpose of this study was to evaluate, under controlled conditions, to what extent nylon MPs are colonized by bacteria, especially by fish and waterborne pathogens, and to also evaluate if the digestion process affects the structure of the polymer.…”

Section: Introductionmentioning

confidence: 99%

Ingested Microplastics Can Act as Microbial Vectors of Ichthyofauna

Jawdhari,

Deák,

Mihăilescu

et al. 2024

Microbiology Research

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Microplastics (plastic particles < 5 mm) are ubiquitous pollutants that have the ability to carry microbiota, including pathogens. Microbial adhesion is usually a sign of pathogenicity; thus, we investigated the adherent microbiota found on 4 mm nylon strips, which were ingested and excreted by wild fish specimens. Retention times were recorded and the polymer analysis of the excreted samples was performed, which showed no signs of degradation, nor did their controls, represented by the nylon strips submerged in the same water tanks. Both the ingested samples and controls presented pathogens in large quantities. Following Matrix-Assisted Laser Desorption/Ionization Time-Of-Flight identification, the dominant genus was represented by Aeromonas, revealing the fact that nylon microplastics can serve as undegradable physical carriers for this pathogen, among others, in the aquatic environment.

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Section: Introductionmentioning

confidence: 99%

Ingested Microplastics Can Act as Microbial Vectors of Ichthyofauna

Jawdhari,

Deák,

Mihăilescu

et al. 2024

Microbiology Research

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“…MP and NP particles can easily enter the animal/human body due to their small size and cause harmful biological effects [6]. Also, do not forget that MPs serve as vectors for pathogens when adsorbed on their surface [7]. Finally, MP and NP particles from commercially available plastics usually contain various additives, some of which have a high toxic potential.…”

Section: Introductionmentioning

confidence: 99%

The Potential of AOP Pretreatment in the Biodegradation of PS and PVC Microplastics by Candida parapsilosis

Bule Možar,

Miloloža,

Martinjak

et al. 2024

Water

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Microplastics are an emerging class of recalcitrant organic pollutants that are of general scientific and public interest nowadays. It would be ideal to remove microplastics from the environment through biodegradation, as biodegradation is a highly ecological and economically acceptable approach. Unfortunately, the efficiency of biodegradation of conventional plastic polymers is low. The application of a suitable pretreatment could increase the efficiency of biodegradation. In this study, the applicability of UV-C/H2O2 and UV-C/S2O82− advanced oxidation processes as pretreatments for the biodegradation of polystyrene and poly(vinyl chloride) microplastics by the yeast Candida parapsilosis was investigated. For the investigated range (pH 4–10, peroxide concentration up to 20 mM and treatment duration up to 90 min), the UV-C/H2O2 process proved to be more effective in degrading polystyrene microplastics, while the UV-C/S2O82− process was more efficient at degrading poly(vinyl chloride) microplastics. Samples pretreated under optimal conditions (90 min treatment time at a pH of 5.7 and H2O2 concentration of 20.0 mM for polystyrene samples; 90 min treatment time at a pH of 8.6 and S2O82− concentration of 11.1 mM for poly(vinyl chloride) samples) were subjected to biodegradation by Candida parapsilosis. The biodegradation conditions included an agitation speed of 156 rpm and an initial pH of 5.7 for the experiments with the polystyrene samples, while an agitation speed of 136 rpm and an initial pH of 4.9 were used for the poly(vinyl chloride) experiments. The initial value of the optical density of the yeast suspension was 1.0 in both cases. The experiments showed a positive effect of the pretreatment on the number of yeast cells on the surface of the microplastics.

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Microbial Succession on Microplastics in Wastewater Treatment Plants: Exploring the Complexities of Microplastic-Microbiome Interactions

Kwiatkowska,

Ormaniec

2024

Microb Ecol

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Despite some effectiveness of wastewater treatment processes, microplastics accumulate in sewage sludge and their further use may contribute to the release of plastic microplastics into the environment. There is an urgent need to reduce the amount of microplastics in sewage sludge. Plastic particles serve as solid substrates for various microorganisms, promoting the formation of microbial biofilms with different metabolic activities. The biofilm environment associated with microplastics will determine the efficiency of treatment processes, especially biological methods, and the mechanisms of organic compound conversion. A significant source of microplastics is the land application of sewage sludge from wastewater treatment plants. The detrimental impact of microplastics affects soil enzymatic activity, soil microorganisms, flora, fauna, and plant production. This review article summarizes the development of research related to microplastics and discusses the issue of microplastic introduction from sewage sludge. Given that microplastics can contain complex composite polymers and form a plastisphere, further research is needed to understand their potential environmental impact, pathogenicity, and the characteristics of biofilms in wastewater treatment systems. The article also discusses the physicochemical properties of microplastics in wastewater treatment plants and their role in biofilm formation. Then, the article explained the impact of these properties on the possibility of the formation of biofilms on their surface due to the peculiar structure of microorganisms and also characterized what factors enable the formation of specific plastisphere in wastewater treatment plants. It highlights the urgent need to understand the basic information about microplastics to assess environmental toxicity more rationally, enabling better pollution control and the development of regulatory standards to manage microplastics entering the environment.

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Interaction between Microplastics and Pathogens in Subsurface System: What We Know So Far

Cited by 6 publications

References 145 publications

Ingested Microplastics Can Act as Microbial Vectors of Ichthyofauna

Ingested Microplastics Can Act as Microbial Vectors of Ichthyofauna

The Potential of AOP Pretreatment in the Biodegradation of PS and PVC Microplastics by Candida parapsilosis

Microbial Succession on Microplastics in Wastewater Treatment Plants: Exploring the Complexities of Microplastic-Microbiome Interactions

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