Microplastics in sewage sludge from the wastewater treatment plants in China

Li, Xiaowei; Chen, Lubei; Mei, Qingqing; Dong, Bin; Dai, Xiaohu; Ding, Guangwei; Zeng, Eddy Y.

doi:10.1016/j.watres.2018.05.034

Cited by 802 publications

(281 citation statements)

References 49 publications

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“…Tank water samples were taken immediately before complete water changes, filtered (0.2μm) to remove MFs, and stored at -80ºC for future chemical analyses to determine presence and concentrations of dyes and other additives. At 7,14, and 21 days, feces were collected by siphoning bottoms of each tank, imaged under a stereomicroscope and then transferred to pre-weighed 1.7 mL Eppendorf tubes (1 tube/tank). Samples were processed with H 2 O 2 and counted as described above (section 2.3), enabling calculation of MF number and length.…”

Section: Experimental Designmentioning

confidence: 99%

“…The synthetic fibers used to make textiles (e.g., clothing, upholstery, and rugs) shed MFs during washing and regular use; a single garment can shed over 1,900 MFs per wash [4]. MFs enter the aquatic environment via sewage release, stormwater runoff, or atmospheric deposition [3,[5][6][7] where they accumulate and impact biota [8]. Polyester (PES) and polypropylene (PP) are the most commonly used a1111111111 a1111111111 a1111111111 a1111111111 a1111111111 (Ted Pella, Redding, CA) into MFs and stored in a clean glass bottle until use.…”

Section: Introductionmentioning

confidence: 99%

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Chronic microfiber exposure in adult Japanese medaka (Oryzias latipes)

Chernick

Lewis

et al. 2020

PLoS ONE

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Microplastic fibers (MFs) pollute aquatic habitats globally via sewage release, stormwater runoff, or atmospheric deposition. Of the synthetic MFs, polyester (PES) and polypropylene (PP) are the most common. Field studies show that fish ingest large quantities of MFs. However, few laboratory studies have addressed host responses, particularly at the organ and tissue levels. Adult Japanese medaka (Oryzias latipes), a laboratory model fish, were exposed to aqueous concentrations of PES or PP MFs (10,000 MFs/L) for 21 days. Medaka egested 1,367 ± 819 PES MFs (0.1 ± 0.04 mg) and 157 ± 105 PP MFs (1.4 ± 0.06 mg) per 24 hrs, with PP egestion increasing over time. Exposure did not result in changes in body condition, gonadosomatic-or hepatosomatic indices. PES exposure resulted in no reproductive changes, but females exposed to PP MFs produced more eggs over time. MF exposure did not affect embryonic mortality, development, or hatching. Scanning electron microscopy (SEM) of gills revealed denuding of epithelium on arches, fusion of primary lamellae, and increased mucus. Histologic sections revealed aneurysms in secondary lamellae, epithelial lifting, and swellings of inner opercular membrane that altered morphology of rostral most gill lamellae. SEM and histochemical analyses showed increased mucous cells and secretions on epithelium of foregut; however, overt abrasions with sloughing of cells were absent. For these reasons, increased focus at the tissue and cell levels proved necessary to appreciate toxicity associated with MFs. PLOS ONEPLOS ONE | https://doi.org/10.

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Section: Experimental Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chronic microfiber exposure in adult Japanese medaka (Oryzias latipes)

Chernick

Lewis

et al. 2020

PLoS ONE

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“…Other than the abovementioned environment matrices, Zhao et al (2017) developed a method for extracting microplastics from marine snow that incorporates dual density separation with sodium iodide extraction and methanol precipitation, and was able to reach more than 90% recovery rate of microspheres of various sizes. For digestion chemicals, Li et al (2018) tested the impact on fluorescent intensity of six digestion methods. Only KOH digestion had no impact on fluorescent polystyrene (PS) used in toxicological experiments, and was found to be an ideal protocol for extracting PS spheres in biota samples.…”

Section: Methodsmentioning

confidence: 99%

“…Rayon, synthetic leather, and polyester were the most common types in influent, while synthetic leather accounted for the largest percentage in effluent, followed by rayon, polyester, and PE (Bai et al 2018b). In sewage sludge collected from 28 wastewater treatment plants throughout 11 Chinese provinces, microplastic concentration reached 1600-56 400 items/kg dry sludge (Li et al 2018). Polyolefin, acrylic fibers, PE, and polyamide were the most common microplastic polymer types.…”

Section: Freshwater Linked With the Oceansmentioning

confidence: 99%

Progress and prospects of marine microplastic research in China

Peng

Zhu

2019

Anthropocene Coasts

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Research on microplastics in China is progressing rapidly. Within recent years, more than 30 research institutes have conducted research on marine microplastic in estuaries, coasts, open sea, and Polar regions. Microplastics have been detected in freshwater systems (lakes, rivers, and wastewater treatment plants) and coastal and marine environments. This paper reviews the research progress of microplastics in China, providing information on topics including the methodology, quantification of microplastics in various habitats, eco-toxicological effect, biodegradation, management, and control of plastic waste and microplastics. This paper discusses the sampling and analysis of microplastic in different media, followed by spatial and temporal distribution of microplastics in marginal seas and coastal and freshwater systems. After summarizing the recent advances on toxicology research and risk assessment of microplastics, this paper provides suggestions for future study to provide baseline information for better risk assessment and improved understanding of the lifecycle of microplastics in the environment.

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“…Domestic and industrial wastewaters can carry substantial loads of potentially harmful microplastics [163], which eventually end up in the corresponding wastewater treatment plant. Wastewater treatment plants are very effective at removing microplastics from the treated water [166], resulting in the accumulation of microplastics in the biosolids themselves [167]. The application of different rates of biosolids, as drivers of microplastic contamination, into agricultural soil was studied [168], finding detectable levels of these potentially harmful emerging contaminants in the amended soils.…”

Section: Emerging Contaminantsmentioning

confidence: 99%

Potential Benefits and Risks for Soil Health Derived From the Use of Organic Amendments in Agriculture

2019

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The use of organic amendments in agriculture is a common practice due to their potential to increase crop productivity and enhance soil health. Indeed, organic amendments of different origin and composition (e.g., animal slurry, manure, compost, sewage sludge, etc.) can supply valuable nutrients to the soil, as well as increase its organic matter content, with concomitant benefits for soil health. However, the application of organic amendments to agricultural soil entails a variety of risks for environmental and human health. Organic amendments often contain a range of pollutants, including heavy metals, persistent organic pollutants, potential human pathogens, and emerging pollutants. Regarding emerging pollutants, the presence of antibiotic residues, antibiotic-resistant bacteria, and antibiotic-resistance genes in agricultural amendments is currently a matter of much concern, due to the concomitant risks for human health. Similarly, currently, the introduction of microplastics to agricultural soil, via the application of organic amendments (mainly, sewage sludge), is a topic of much relevance, owing to its magnitude and potential adverse effects for environmental health. There is, currently, much interest in the development of efficient strategies to mitigate the risks associated to the application of organic amendments to agricultural soil, while benefiting from their numerous advantages.

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Microplastics in sewage sludge from the wastewater treatment plants in China

Cited by 802 publications

References 49 publications

Chronic microfiber exposure in adult Japanese medaka (Oryzias latipes)

Chronic microfiber exposure in adult Japanese medaka (Oryzias latipes)

Progress and prospects of marine microplastic research in China

Potential Benefits and Risks for Soil Health Derived From the Use of Organic Amendments in Agriculture

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