Microplastics in seawater and zooplankton: A case study from Terengganu estuary and offshore waters, Malaysia

Taha, Zakaria Daoud; Amin, Roswati Md; Anuar, Sabiqah Tuan; Nasser, Ammar Arif Abdul; Sohaimi, Erqa Shazira

doi:10.1016/j.scitotenv.2021.147466

Cited by 97 publications

(47 citation statements)

References 86 publications

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“…Annual global plastics production has reached over 359 million tons in 2018 (Shen et al 2019) and it is estimated that a conservative value of 13 million tons of plastics per year was discharged into large water bodies (Jambeck et al 2015). It has been reported that 60-80% of these discharged plastics are microplastics that refer to particles with a size ranging from 0.1 μm to 5 mm (Taha et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Removal of microplastics from wastewater through electrocoagulation-electroflotation and membrane filtration processes

Akarsu

Kumbur

Kıdeyş

2021

Water Science and Technology

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Wastewater treatment plants (WWTPs) are one of the major vectors of microplastics (MPs) pollution for the recipient water bodies. Therefore, the recovery of MPs from WWTPs is extremely important for decreasing their accumulation and impact in aquatic systems. In this present study, the electrocoagulation-electroflotation (EC/EF) and membrane filtration processes were investigated in removing MPs from wastewaters. The effectiveness of different electrode combinations (Fe-Al and Al-Fe), current density (10–20 A/m2), pH (4.0–10.0) and operating times (0–120 min) on the removal of two different polymer particles in water were investigated to obtain maximum treatment efficiency. The effect of pressure (1–3 bar) on membrane filtration removal efficiency was also investigated. The maximum removal efficiencies were obtained as 100% for both polymer types with electrode combination of Al-Fe, initial pH of 7, current density of 20 A/m2 and reaction time of 10 min. The membrane filtration method also displayed a 100% removal efficiency. In addition, these laboratory-scale results were compared with the one-year average data of a plant treating with real-scale membranes. The results indicated that the proposed processes were supplied maximum removal efficiency (100%) compared to conventional secondary and tertiary treatment methods (2–81.6%) in the removal of microplastics.

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Section: Introductionmentioning

confidence: 99%

Removal of microplastics from wastewater through electrocoagulation-electroflotation and membrane filtration processes

Akarsu

Kumbur

Kıdeyş

2021

Water Science and Technology

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“…DEHP at low-dose exposure affects neurovascular conjugates in mice . MPs account for by far the largest number of marine debris . The intake of MPs causes stomach damage and inflammation in mice and increases the risk of cancer in both animals and humans. , The cerebrum is a crucial regulatory center for body activity.…”

Section: Discussionmentioning

confidence: 99%

Di-(2-Ethylhexyl) Phthalate and Microplastics Induced Neuronal Apoptosis through the PI3K/AKT Pathway and Mitochondrial Dysfunction

Zhang

Sun

et al. 2022

J. Agric. Food Chem.

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Di-(2-Ethylhexyl) phthalate (DEHP) and microplastics (MPs) have released widespread residues to the environment and possess the ability to cause damage to humans and animals. However, there are still gaps in the study of damage to neurons caused by DEHP and MPs in mice cerebra and whether they have combined toxic effects. To investigate the underlying mechanism of action, mice were fed 200 mg/kg DEHP and 10 mg/L MPs in vivo. In vitro, NS20Y (CBNumber: CB15474825) cells were treated with 25 μM DEHP and 775 mg/L MPs. Next, qRT-PCR and western blot analysis were performed to evaluate PI3K/AKT pathway genes, mitochondrial dynamics-related genes, apoptosis-related genes, and GSK-3β and its associated genes, mRNA, and protein expression. To determine pathological changes in the mice cerebra, hematoxylin and eosin (H&E) staining, transmission electron microscopy, and TUNEL staining were employed. To determine the levels of reactive oxygen species (ROS) and apoptosis cells in vitro, ROS staining, acridine orange/ethidium bromide (AO/EB) staining, and flow cytometry were performed. Our results demonstrated that DEHP and MPs caused changes in mitochondrial function, and GSK-3β and its associated gene expression in mice through the PI3K/AKT pathway, which eventually led to apoptosis of neurons. Moreover, our findings showed that DEHP and MPs have a combined toxic effect on mice cerebra. Our findings facilitate the understanding of the neurotoxic effects of DEHP and MPs on neurons in the cerebra of mice and help identify the important role of maintaining normal mitochondrial function in protecting cerebrum health.

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“…The analysis of the clusters in Figure 2 also allows for the identification of different publication trends: while the red cluster seems to have a focus slightly directed towards environmental pollution and its aspects, e.g., contamination, debris, and impact, the green cluster covers more physical aspects/zones and transportation routes, e.g., particles, sediments, and surface waters. The smaller cluster, in blue, has terms that also directly connect with microplastics, referring to their ingestion by aquatic species, e.g., zooplankton, ingestion, and demersal fish [67][68][69]. The national focus on China has been the subject of several publications, as highlighted by terms associated with the region in the co-occurrence map (Bohai Sea, Yellow Sea, and Pearl River, among others) [70,71].…”

Section: Science Mappingmentioning

confidence: 99%

Riverine Plastic Pollution in Asia: Results from a Bibliometric Assessment

Filho

Dedeoğlu

Dinis

et al. 2022

Land

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Rivers are important ecosystems, vital to the livelihoods of hundreds of millions of humans and other species. Despite their environmental, social, and economic importance, current use of rivers is unsustainable, due to a combination of solid waste and high levels of pollutants. Plastic materials are among the most predominant of such pollutants. Based on the need for additional research in this area, this study examines pressures put to rivers and explores trends related to riverine plastic pollution, with a focus on Asia. Apart from the bibliometric analysis, and relying on the collected information, examples describing the drivers of riverine plastic pollution in a sample of Asian countries are described, outlining the specific problem and its scope. Among some of the results obtained from it, mention can be made to the fact that much of the literature focuses on plastic pollution as a whole and less on one of its most significant ramifications, namely microplastics. Additionally, there is a need related to data availability on riverine plastic data and improving the understanding of transport mechanisms in relation to riverine plastic emission into the ocean. The results from this study illustrate the significance of the problems posed by plastic waste to Asian rivers and point out the fact that there are still significant gaps in respect of regulations and standards, which prevent improvements that are highlighted in this study. Based on the results of this bibliometric assessment, specific measures via which levels of riverine plastic pollution may be reduced are presented, bringing relevant new insights on this topic beyond the existing reviews.

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Microplastics in seawater and zooplankton: A case study from Terengganu estuary and offshore waters, Malaysia

Cited by 97 publications

References 86 publications

Removal of microplastics from wastewater through electrocoagulation-electroflotation and membrane filtration processes

Removal of microplastics from wastewater through electrocoagulation-electroflotation and membrane filtration processes

Di-(2-Ethylhexyl) Phthalate and Microplastics Induced Neuronal Apoptosis through the PI3K/AKT Pathway and Mitochondrial Dysfunction

Riverine Plastic Pollution in Asia: Results from a Bibliometric Assessment

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