Abundance and Characterization of Microplastics in Main Urban Ditches Across the Bahir Dar City, Ethiopia

Gela, Sahlu Mhiret; Aragaw, Tadele Assefa

doi:10.3389/fenvs.2022.831417

Cited by 19 publications

(10 citation statements)

References 98 publications

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“…The diverse range of MP colors indicates their varying sources of origin. Notably, certain colors like red and blue from films and fibers might lose their original hues upon entering an aquatic environment due to the prolonged exposure to sunlight (Martí et al, 2020;Gela and Aragaw, 2022).…”

Section: Morphological Characteristics Of Mps In Sediment and Watermentioning

confidence: 99%

Microplastics in fish culture ponds: abundance, characterization, and contamination risk assessment

Hossain,

Banik,

Nur

et al. 2023

Front. Environ. Sci.

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Microplastics (MPs), an emerging pollutant, have drawn attention on a global scale and have been found in various ecosystems. Nevertheless, there is currently a lack of information regarding the contamination levels of MPs in aquaculture ponds worldwide. In this study, sediment and water samples were collected from five types of fish ponds, namely, homestead ponds (S1), commercial aquaculture ponds (S2), ponds near a residential area (S3), ponds near a small-scale industrial area (S4), and ponds near a large-scale industrial area (S5), to identify, characterize, and assess the contamination risk of MPs. Stereomicroscopic and Fourier-transform infrared (FTIR) spectroscopy analyses revealed that the MPs ranged from 3.33 item/kg to 136.67 item/kg in sediment and 16.6 item/L to 100 item/L in water samples. Overall, the abundance of MPs was extremely high in S5, followed by S4, S2, S3, and S1, which clearly showed the levels increased with the intensity of human activities. The levels of MPs in both sediment and water showed significant differences (p < 0.05) within and between ponds, as well as in comparison between water and sediment samples. The concentrations of MPs surpassed those noted in aquaculture ponds of different nations. The majority of MPs consisted of fragments and films in both sediment and water samples. Furthermore, transparent and white-colored MPs were the prevailing types found in the sediment and water samples of the aquaculture ponds. Around 34% of MPs present in sediment and 30% in water fell within the size range of 0.5–1 mm. Polymers like polypropylene (PP), polyethylene (PE), and polyethylene terephthalate (PET) were prevalent in both sediment and water samples. The contamination factor reached exceptionally elevated levels (>30 for sediment and >3 for water), signifying that the sampled regions, particularly S4 and S5 (industrial sites), displayed significant MP contamination. Moreover, the pollution load index values of the sediment (3.0 ± 1.5) and water samples (1.5 ± 0.3) also indicated the areas were contaminated with MPs. Multivariate analysis indicated that the elevated concentration of MPs in the studied region could be attributed to the discharge of effluents and other human-induced activities.

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Section: Morphological Characteristics Of Mps In Sediment and Watermentioning

confidence: 99%

Microplastics in fish culture ponds: abundance, characterization, and contamination risk assessment

Hossain,

Banik,

Nur

et al. 2023

Front. Environ. Sci.

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“…Carbon-carbon polymers include polypropylene (PP), polyethylene (PE), polystyrene (PS), and polyvinyl chloride (PVC) and have been reported to represent 77% of the plastic demand globally; meanwhile, heteroatomic polymers are responsible for 18% (see Figure 9), according to Samir et al [124]. Of all the common polymers reported, PE is responsible for more than 90% of the MPs found in the environment [125,126]. This is because PE is reported to be frequently used in the packing industry as the main packaging material [127].…”

Section: Different Polymers Used In Plastic Production In South Africamentioning

confidence: 99%

The Occurrence and Fate of Microplastics in Wastewater Treatment Plants in South Africa and the Degradation of Microplastics in Aquatic Environments—A Critical Review

Malematja,

Melato,

Mokgalaka-Fleischmann

2023

Sustainability

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The occurrence of microplastics (MPs) and their omnipresence have attracted enormous attention across the globe; however, research on MPs in South Africa is still in its infancy and thus, the data are still very much lacking. Approximately 120 million tons of general waste is generated each year in South Africa, which exacerbates the pressure on the ability of municipalities to manage waste. Wastewater treatment plants (WWTPs) are at the center of this general waste that includes plastic debris and primary MPs that are discharged from households and industries. In general, the removal efficiency of MPs across the globe was found to be between 70% and 99%, with biological treatment technology common in both primary and secondary treatment steps in WWTPs. Furthermore, the current review paper has revealed that there is a wide research gap on the occurrence and fate of MPs in WWTPs across South Africa. This is a worrying factor considering the increasing rate of plastic waste generation due to rapid industrialization, urbanization, and overpopulation in the country. More so, the scarcity of data regarding the occurrence of MPs in freshwater is widely noticeable across the country. Therefore, given the amounts of MPs discharged from households, industries, and plastic debris littered into the surface waters, the data on the occurrence and fate of MPs in South Africa should be given the urgent attention they deserve. To achieve the effective and sustainable management of water resources and services set out in the National Development Plan (NDP) 2030 adopted by the government, the status and capabilities of WWTPs to remove MPs must be monitored and addressed. In addition to achieving the zero waste to landfill goal by 2030, a circular economy is regarded as the most effective model for solving the plastic waste crisis in the environment; therefore, its full implementation is required for a substantial impact.

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“…Associated with agricultural activities, including the amendment of soil via sewage/sludge and organic fertilizers, including the usage of plastic films and mulches, soil systems have developed into a significant sink for plastics (Chae & An, 2018;de Souza MacHado et al, 2018;He et al, 2018). MPs are often characterised as plastic particles e-ISSN: 2682-8588 less than 5 mm (Mhiret Gela & Aragaw, 2022). The smallest fraction of MPs classified as nanoplastics (NPs) are plastics with a size of less than 100 nm or 1,000 nm, with the lower size restriction being the subject of academic discussion (Gigault et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Recent advances on microplastics/nanoplastics interaction with plant species: A concise review

Adzuan Hafiz,

Jalaudin Basha,

Osman

2023

MJCET

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The transmission, toxicity, and removal of micro/nanoplastics (MPs/NPs) have been the subject of extensive attention and have impacted concerns globally. The inclusion of microplastic pollution can have a plethora of effects on plant growth, depending on the composition of the planting media. Following a recent year of research focusing mostly on aquatic systems, attention has begun shifted to the consequences of microplastic on plant cells. Therefore, there is a significant knowledge gap regarding the extent to which MPs have an impact on terrestrial environments, particularly agroecosystems, and the risks that this has for human health. Within this review, the interaction of MPs/NPs to plant species is due to the abundance of microplastics in soil following human activity. This review also summarised the routes of MPs/NPs to the plant through the root and shoot of the plant. Subsequently, the emergence of MPs/NPs influences and brings implications on plant growth, growth, and crop production according to each plant species. Besides, the recommendations for further research on the phytotoxic effects of MPs on plants, the method of uptake and translocation in plant tissues, detection techniques for MPs in plants, and, most importantly, the potential for future interactions and accumulation of MPs in plants have also been discussed thoroughly in this paper. The most recent developments in this area are summarised at the end, with an emphasis on the future directions for studying microplastics in terrestrial systems.

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Abundance and Characterization of Microplastics in Main Urban Ditches Across the Bahir Dar City, Ethiopia

Cited by 19 publications

References 98 publications

Microplastics in fish culture ponds: abundance, characterization, and contamination risk assessment

Microplastics in fish culture ponds: abundance, characterization, and contamination risk assessment

The Occurrence and Fate of Microplastics in Wastewater Treatment Plants in South Africa and the Degradation of Microplastics in Aquatic Environments—A Critical Review

Recent advances on microplastics/nanoplastics interaction with plant species: A concise review

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