Semi-crystalline microplastics in wastewater plant effluents and removal efficiencies of post-treatment filtration systems

Bitter, Hajo; Krause, Leonie; Kirchen, Franziska; Fundneider, Thomas; Lackner, Susanne

doi:10.1016/j.wroa.2022.100156

Cited by 24 publications

(3 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This complicates the monitoring and control of WWTP operations. To simplify the methodology and reduce uncertainties, MP-ML mass concentrations are expected to be more accurate, practical, and useful measurements for the long-term WWTP monitoring, as reported previously by other authors [31,50,52]. For these reasons, this study evaluates the MP-ML removal in rapid gravity filtration (RGF) and membrane ultrafiltration (UF) systems in terms of MP-ML mass concentrations.…”

Section: Introductionmentioning

confidence: 84%

“…[33], microplastic particle counting can produce some inconsistencies in the MP-ML evaluation. In addition, these methodologies are highly time-consuming, usually entailing manual separation of ML-MP particles, counting under an optical microscope and/or analysis by Fourier-transform infrared (FTIR) spectroscopy, taking several hours or even days [18,23,50]. From authors' experience, visual counting and FTIR analysis take an extra time (i.e., apart from the time needed for the pre-treatment of the sample described in Section 2.3.1) of around 12 h per sample.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Feasibility of Rapid Gravity Filtration and Membrane Ultrafiltration for the Removal of Microplastics and Microlitter in Sewage and Wastewater from Plastic Industry

González-Camejo

Morales²,

Peña-Lamas³

et al. 2022

SSRN Journal

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Feasibility of Rapid Gravity Filtration and Membrane Ultrafiltration for the Removal of Microplastics and Microlitter in Sewage and Wastewater from Plastic Industry

González-Camejo

Morales²,

Peña-Lamas³

et al. 2022

SSRN Journal

View full text Add to dashboard Cite

“…Additionally, the plastic particles are not evenly distributed in environmental samples such as water and wastewater. A recent investigation demonstrated that the removal of MPs differed for different types of polymers [41]. The authors investigated five polymer types, including low density polyethylene (PELD), high density polyethylene (PEHD), PP, polyamide 6 (PA6), and polyethylene terephthalate (PET) in different effluent streams.…”

Section: Sand Filtrationmentioning

confidence: 99%

Microplastics Removal from a Plastic Recycling Industrial Wastewater Using Sand Filtration

Umar

Singdahl-Larsen

Ranneklev

2023

Water

View full text Add to dashboard Cite

The removal of microplastic from wastewater collected from a plastic recycling facility was investigated, using a laboratory scale sand-filter. Wastewater samples were collected before and after the onsite sand-filter, for characterization for different polymer types, sizes, and shapes. A considerable difference in the characteristics and concentrations of microplastics was observed before and after onsite sand-filtration, demonstrating differences in the source of microplastics and/or potential contamination of the sand-filter operated at the facility. The distribution of different polymers showed polyethylene and polypropylene to be the main microplastics present in the wastewater samples. In the next stage, the samples were passed through a laboratory scale sand-filter column, to investigate the removal of microplastics. The laboratory scale sand-filter showed high efficiency (up to 100%) in removing microplastics of all polymer types, shapes, and sizes, demonstrating the effectiveness of this well-developed, and widely adopted, method for the removal of microplastics from wastewater. As the green shift and circular economy will result in more plastics being recycled, this study demonstrates the need for quantification of microplastic in effluents from plastic recycling facilities. This is important for devising appropriate microplastic removal strategies, and meeting potential discharge regulations that may come into effect in the future.

show abstract

Use of Saccharomyces cerevisiae as new technique to remove polystyrene from aqueous medium: modeling, optimization, and performance

Anbarani¹,

Nasrabadi²,

Bonyadi³

2023

Appl Water Sci

View full text Add to dashboard Cite

MPs are widely found in various environments. PS is the second most common microplastic in sediments, freshwater, soil, and coastal ecosystems. S. cerevisiae was studied as a biocoagulant due to its advantages such as ease of use, non-toxicity, large-scale cultivability and low cost. The aim of this study was to evaluate the efficiency of S. cerevisiae in removing PS from aqueous solutions. BBD was used to determine the optimal removal conditions. The MPs were washed, dried, crushed, sieved, and kept in a closed container to avoid exposure to light and moisture. PS removal was measured under various parameters such as the dose of S. cerevisiae (100–300 mg/L), the concentration of PS (200–900 mg/L), and the pH (4–10). The suspension of PS and S. cerevisiae was stirred and subjected to variable speeds to disperse yeast cells and contact with PS particles. The formed clots were settled under static conditions, and the suspended MPs in the aqueous solution were measured by filtering through Whatman filter paper and recording its weight after drying. The maximum PS removal efficiency was 98.81% under optimized conditions, i.e., the PS concentration of 550 mg/L, the yeast dose of 200 mg/L, and the pH of 7. With regard to the mentioned results, it can be said that S. cerevisiae can be used as a natural and environmentally friendly biocoagulant to remove PS.

show abstract

Semi-crystalline microplastics in wastewater plant effluents and removal efficiencies of post-treatment filtration systems

Cited by 24 publications

References 59 publications

Feasibility of Rapid Gravity Filtration and Membrane Ultrafiltration for the Removal of Microplastics and Microlitter in Sewage and Wastewater from Plastic Industry

Feasibility of Rapid Gravity Filtration and Membrane Ultrafiltration for the Removal of Microplastics and Microlitter in Sewage and Wastewater from Plastic Industry

Microplastics Removal from a Plastic Recycling Industrial Wastewater Using Sand Filtration

Use of Saccharomyces cerevisiae as new technique to remove polystyrene from aqueous medium: modeling, optimization, and performance

Contact Info

Product

Resources

About