Occurrence and removal of microplastics in wastewater treatment plants and drinking water purification facilities: A review

Cheng, Yu-Shan; Kim, Jong-Gook; Kim, Hye-Bin; Choi, Jeong Hwan; Tsang, Yiu Fai; Baek, Kitae

doi:10.1016/j.cej.2020.128381

Cited by 91 publications

(29 citation statements)

References 104 publications

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“…The choice of monitoring parameters depends on the purpose of use and what quality of water is needed. For testing the physical properties like temperature, pH, color, TDS, odor etc., physical tests must be performed [67] , [68] . On the other hand, chemical testing is done to measure properties like hardness, alkalinity, BOD, COD and DO etc.…”

Section: Resultsmentioning

confidence: 99%

COVID-19 pandemic in Uttarakhand, India: Environmental recovery or degradation?

Nandan

Siddiqui

Singh

et al. 2021

Journal of Environmental Chemical Engineering

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The human coronavirus disease-2019 (COVID-19) caused by SARS-CoV-2 is now a global pandemic. Personal hygiene such as hand-washing, the use of personal protective equipment, and social distancing via local and national lockdowns are used to reduce the risk of transmission of SARS-CoV-2. COVID-19 and the associated lockdowns may have significant impacts on environmental quality and ergonomics. However, limited studies exists on the impacts of COVID-19 and the associated lockdowns on environmental quality and ergonomics in low-income settings. Therefore, the present study investigated the impacts of the COVID-19 outbreak on socioeconomics, ergonomics and environment (water quality, air quality and noise) in Uttrakhand, India. Approximately 55% of respondents experienced headaches, and the other common health-related issue was back pain, with 45% of respondents having problems with their backs. Water and air quality significantly improved during the lockdown relative to the pre-lockdown period, but was observed to return to their previous characteristics afterwards. Lockdowns significant increased the concentration of indoor air pollutants while noise pollution levels significantly declined. In summary, lockdowns have adverse impacts on ergonomics, resulting in work-related human health risks. The impacts of lockdowns on environmental quality are mixed: temporary improvements on water and air quality, and noise reduction were observed, but indoor air quality deteriorated. Therefore, during lockdowns there is a need to minimize the adverse environmental and ergonomic impacts of lockdowns while simultaneously enhancing the beneficial impacts.

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Section: Resultsmentioning

confidence: 99%

COVID-19 pandemic in Uttarakhand, India: Environmental recovery or degradation?

Nandan

Siddiqui

Singh

et al. 2021

Journal of Environmental Chemical Engineering

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“…The polymer composition in landfill leachate is similar to that in wastewater. The most occurring MPs in wastewater are polyester (PES)( 60%-96%), polyamide (PA) (3%-20%), polyethylene (PE) (64%-78%), polypropylene (PP) (20%-100%), and polystyrene (PS)(12%-80%) and other polymers like alkyd, acrylic (Cheng et al, 2021). Wearing synthetic clothes during washing is one of the significant sources for PES and PA. Facial and body wash contains PE and PP.…”

Section: /40mentioning

confidence: 99%

“…Even though not many studies discussed the polymer and shape of microplastic interrelation in leachate, information from WWTP studies confirms the correlation. For example, PES and PA particles are usually occurred in fibrous form, while PE, PP, and PS particles are commonly found in the structure of fragments and pellets (Cheng et al, 2021;Lares et al, 2018;Lv et al, 2019;Magni et al, 2019). Thus, removing a particular polymer category might indicate the reduction of the corresponding shape (Cheng et al, 2021).…”

Section: /40mentioning

confidence: 99%

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Sources, Occurrence, and Removal of Microplastic/Nanoplastic in landfill leachate: A Comprehensive Review

Kabir

Zhao

Zhang

et al. 2022

Preprint

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Due to a massive amount of plastic waste from municipal and industrial sources accumulates in landfills, landfill leachate is becoming a significant reservoir of microplastic (MPs)/ Nanoplastics (NPs), and MPs/NPs in landfill leachate released to the environment can pose detrimental effects on humans and biota. This study critically reviewed most available up-to-date scientific literature on MPs/NPs in landfill leachate and provides the state-of-the-science regarding their detection and quantification, occurrence and characteristics, and remediation. MPs/NPs in landfill leachate can be classified into primary source that is in micro- or nano- scale when manufactured, and secondary source that is made as regular sized plastic but fragmented in to micro- or nano- scale in landfills. In the global scale, the concentration of MPs/NPs in raw and treated landfill leachate varied between 0-382 item/L and 0-2.7 item/L, respectively. Occurrence of MPs/NPs in raw landfill leachate is largely related to the local plastic waste production and solid waste management practice. Among all types of polymers, low-density and high-density polyethylene (PE), polystyrene (PS), polypropylene (PP), are the four most abundant MPs/NPs polymers in landfill leachate worldwide. Though the color of MPs/NPs primarily depends on their parent plastic waste, the dominance of light color in MPs/NPs in leachate is a sign of long-term degradation in landfills. The identified morphologies of MPs/NPs in leachate from all literatures have the highest abundance of fiber and fragments. Depending on the treatment technique, leachate treatment processes can achieve removal rate from 3 to 100% for MPs/NPs. Also, the critical review provides unique perspectives for MPs/NPs in landfill leachate regarding remediation, ultimate disposal, fate and transport among engineering systems, standardized detection methods, source reduction, etc. The landfill-WWTP loop and bioreactor landfills create unique challenges and opportunities for the management of landfill leachate induced MPs/NPs.

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“…During the last years, several articles have been published on the fate and removal efficiency of MPs in drinking water treatment plants (Cheng et al, 2021;Pivokonský et al, 2020). Coagulation-flocculation process is widely used during water and wastewater treatment due to its relatively low cost and the ability to remove suspended solids, natural organic matter, color and turbidity (Jiang et al, 2012;Arukula et al, 2018;Dayarathne et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Screening on the sorption of emerging contaminants to polystyrene and polyethylene and use of coagulation – flocculation process for microplastics’ removal

2021

Global NEST: The International Journal

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<p>In this study, preliminary experiments were conducted to investigate the sorption potential of different organic micropollutants to polystyrene and polyethylene and to examine the removal efficiency of these microplastics during coagulation experiments with iron and manganese coagulants. For the sorption experiments, eight synthetic chemicals which belong to three different categories, pharmaceutical compounds, personal care products and endocrine-disrupting compounds were used. Among target compounds, important removal due to sorption to microplastics was noticed for the antihypertensive drugs Valsartan and Losartan, when polystyrene was used as sorbent material. Their sorption was a slow and gradual process; 20% of valsartan and 59% of losartan was sorbed after 168 h. On the other hand, no sorption of parabens, bisphenol A and sulfamethoxazole was observed. The elaboration of coagulation experiments showed that polystyrene is removed to a higher percentage comparing to polyethylene, reaching 92.4% and 72.1%, respectively. The higher removal of polystyrene was achieved when ferrous sulfate or magnesium sulfate was added, while the use of ferric chloride did not improve its removal. Increased removal of polyethylene was achieved when magnesium sulfate was used. Further experiments should be conducted to investigate the parameters affecting sorption of valsartan and losartan to microplastics and the mechanisms governing removal of polystyrene and polyethylene during coagulation.</p>

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Occurrence and removal of microplastics in wastewater treatment plants and drinking water purification facilities: A review

Cited by 91 publications

References 104 publications

COVID-19 pandemic in Uttarakhand, India: Environmental recovery or degradation?

COVID-19 pandemic in Uttarakhand, India: Environmental recovery or degradation?

Sources, Occurrence, and Removal of Microplastic/Nanoplastic in landfill leachate: A Comprehensive Review

Screening on the sorption of emerging contaminants to polystyrene and polyethylene and use of coagulation – flocculation process for microplastics’ removal

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