Microplastics pollution in wastewater: Characteristics, occurrence and removal technologies

Bui, Xuan‐Thanh; Vo, Thi-Dieu-Hien; Nguyen, Phuong-Thao; Nguyen, Van-Truc; Dao, Thanh‐Son; Nguyen, Phuoc‐Dan

doi:10.1016/j.eti.2020.101013

Cited by 103 publications

(45 citation statements)

References 130 publications

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“…Due to these changes, differences in the behavior of MPs can be observed. For this reason, efficiencies differ for each treatment step and for entire plant (Bui et al 2020).…”

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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“…Due to these changes, differences in the behavior of MPs can be observed. For this reason, efficiencies differ for each treatment step and for entire plant (Bui et al 2020).…”

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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“…In addition to regulatory and social measures, remediation technologies have also been investigated to control microplastic pollution. The primary applications of technologies such as sedimentation, coagulation, air flotation, activated sludge, sand filter, membrane separation, and membrane bioreactor for microplastic removal from wastewater have been summarized in several reviews (Bui et al 2020;Cristaldi et al 2020;Zhang and Chen 2020). The existing knowledge of MPs removal in drinking water through traditional treatment processes, electrocoagulation, magnetic extraction, and membrane separation has also been discussed (Krause et al 2020;Shen et al 2020).…”

Section: Research Overviewmentioning

confidence: 99%

Editorial Overview: Emissions of Microplastics and Their Control in the Environment

2021

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Table 1. Recent reviews of research on microplastic pollution Review title Research subject Author and year Atmospheric microplastics: A review on current status and perspectives Atmospheric MPs Zhang et al. (2020b) Mini-review of microplastics in the atmosphere and their risks to humans Atmospheric MPs Chen et al. (2020a) Mini-review on current studies of airborne microplastics: Analytical methods, occurrence, sources, fate and potential risk to human beings Atmospheric MPs Huang et al. (2020) A new contaminant superhighway? A review of sources, measurement techniques and fate of atmospheric microplastics Atmospheric MPs Mbachu et al. (2020) An overview of analytical methods for detecting microplastics in the atmosphere Atmospheric MPs analysis Chen et al. (2020b) © ASCE 01821002-8 J. Environ. Eng.

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“…Near food chain processes, such as sea salt production, can transport the microplastics from the environment to human food and therefore pose a risk to human health [9,14,15]. To ensure the functionality of microplastic sensitive water using processes there is a need for a method to remove microplastics from water cost effectively and with low technical effort [11,16,17].…”

Section: Introductionmentioning

confidence: 99%

Removal of Microplastics from Waters through Agglomeration-Fixation Using Organosilanes—Effects of Polymer Types, Water Composition and Temperature

Sturm

Horn

Schuhen³

2021

Water

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Due to the fact, that microplastics are a global environmental problem, new ways for their removal from water, soil and air need to be developed. New materials in combination with easy to implement technologies for microplastic removal come into the focus of scientific studies and engineering, especially for application in water resources. In our comparative case study, the effects of water composition and temperature on the agglomeration-fixation reaction of microplastics using organosilanes were examined. We compared biologically treated municipal wastewater, seawater and demineralized water at temperatures ranging from 7.5–40 °C. Temperature variations and tested water compositions showed no negative effect on microplastic removal. The residues of the organosilanes remaining in the water after the fixation process were monitored using ICP-OES and DOC measurements. Only one of the organosilanes tested showed no dissolved residues in the waters. Microplastic encompasses a multitude of different types of polymers with different properties and surface chemistries. Therefore, we compared the efficiency of the process for polyethylene, polypropylene, polyamide, polyester, and polyvinylchloride as examples of common polymer types with different chemical compositions. A strong effect of the polarity of microplastics and organosilanes on removal efficiency was observed. The organic groups of organosilanes can be chemically adapted to different polymer types.

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Microplastics pollution in wastewater: Characteristics, occurrence and removal technologies

Cited by 103 publications

References 130 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

Editorial Overview: Emissions of Microplastics and Their Control in the Environment

Removal of Microplastics from Waters through Agglomeration-Fixation Using Organosilanes—Effects of Polymer Types, Water Composition and Temperature

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