Microplastics in the Florence wastewater treatment plant studied by a continuous sampling method and Raman spectroscopy: A preliminary investigation

Becucci, Maurizio; Mancini, Mirco; Campo, Riccardo; Paris, Enio

doi:10.1016/j.scitotenv.2021.152025

Cited by 30 publications

(5 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Not only does Raman analysis have the capability to unravel the identity of these particles, but it also holds the power to divulge precious insights into the composition of the samples under scrutiny. Astonishingly, the Raman spectrometer boasts remarkable sensitivity, capable of detecting particles as minuscule as 1 µm in size [68]. What further elevates the allure of this technique is its non-contact nature, which ensures the preservation of the pristine structure of the samples, and, in turn, facilitates subsequent analyses [69].…”

Section: Raman Spectrometermentioning

confidence: 99%

Microplastics in Water: A Review of Characterization and Removal Methods

Li,

Chen,

Tang

et al. 2024

Sustainability

View full text Add to dashboard Cite

Microplastics (MPs), as an emerging persistent pollutant, exist and accumulate in the environment, which has garnered them considerable global attention. While the origin, dispersion, distribution, and impact of MPs have been extensively documented, the characterization and removal strategies for MPs present ongoing challenges. In this literature review, we introduce in detail the advantages and disadvantages of seven characterization methods, from macroscopic to microscopic, from visual observation to microscopic characterization, and discuss their scope of application. In addition, 12 treatment schemes were summarized from the three treatment directions of physics, chemistry, and biology, including filtration, adsorption, extraction, magnetic separation, oil film separation, Fenton oxidation, electrochemical oxidation, persulfate advanced oxidation, photocatalytic oxidation, coagulation, electrocoagulation, foam flotation, anaerobic–anoxic–aerobic activated sludge, enzymatic degradation, bacterial degradation, and fungal degradation. Additionally, we present a critical assessment of the advantages and drawbacks associated with these removal strategies. Building upon the findings of our research team, we propose a novel approach to degrade MPs, which combines three-dimensional electrocatalytic oxidation technology with persulfate advanced oxidation technology. This advanced oxidation technology achieves 100% degradation of antibiotics in water, can degrade large molecules into environmentally harmless small molecules, and should also be a very good strategy for the degradation of MPs. Compared with two-dimensional electrocatalytic technology, the degradation efficiency is higher and the degradation cost is lower This review intends to propel further advancements for addressing the issue of MP pollution.

show abstract

Section: Raman Spectrometermentioning

confidence: 99%

Microplastics in Water: A Review of Characterization and Removal Methods

Li,

Chen,

Tang

et al. 2024

Sustainability

View full text Add to dashboard Cite

show abstract

“…The smallest size, i.e., in the range of 25-100 μm, was the most abundant fraction even though each particle is much lighter than those of bigger fractions. This probably occurs because the biggest fractions of MP-ML are removed more efficiently in the upstream WWTP units and are also fragmented into smaller particles due to UWW processes [16,19,28]. From the samples analysed, high variability was obtained (high SD).…”

Section: Urban Wastewater (Uww)mentioning

confidence: 99%

“…Furthermore, most of the studies developed so far about MP-ML removal in WWTPs are basically based on the characterisation of the microparticles in terms of number, size, shape, colour, etc. and on the analysis of influent and effluent concentrations of MP-ML [28][29][30]. Scarce information can be found about MP-ML mass concentration [31] and on the operability of these post-treatment systems and their mechanisms of removal [25].…”

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

“…The complex shape and small size of MPs makes their properties different from pristine ones, which leads to an inappropriateness of the international standards for the definition of quality of macroscopic plastic products. A current limitation on the identification and analysis of MPs is the need for sample preparation, which is also required for some spectral measurement techniques, such as Fourier-transform infrared (FTIR) and Raman spectroscopy [4][5][6]. Currently, emerging method to detect MPs utilize hyperspectral imaging of dry MPs [7].…”

Section: Introductionmentioning

confidence: 99%

Sorting microplastics from other materials in water samples by ultra-high-definition imaging

Roussey¹

2023

J. Eur. Opt. Society-Rapid Publ.

View full text Add to dashboard Cite

In this study a commercial particle analyzer was used to image and help sorting microplastic particles (MPs) dispersed in filtrated and de-aerated tap water. The device provides a relatively easy and fast procedure for obtaining ultra-high-definition imaging, allowing the determination of shape, size, and number of 2D-projections of solid particles. The image analysis revealed clear differences among the studied different MPs originating from the grinding of five common grades of plastic sheets as they affect the image rendering differently, principally due to the light scattering either at the surface or in the volume of the microplastics. The high-quality imaging of the device also allows the discrimination of the microplastics from air bubbles with well-defined spherical shapes as well as to obtain an estimate of the size of MPs in a snapshot. We associate the differences among the shapes of the identified MPs in this study depending on the plastic type with known physical properties, such as brittleness, crystallinity, or softness. Furthermore, as a novel method we exploit a parameter based on the light intensity map from moving particles in cuvette flow to sort MPs from other particles, such as, wood fiber, human hair, and air bubbles. Using the light intensity map, which is related to the plastic-water refractive index ratio, the presence of microplastics in water can be revealed among other particles, but not their specific plastic type.

show abstract

Microplastics in the Florence wastewater treatment plant studied by a continuous sampling method and Raman spectroscopy: A preliminary investigation

Cited by 30 publications

References 25 publications

Microplastics in Water: A Review of Characterization and Removal Methods

Microplastics in Water: A Review of Characterization and Removal Methods

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

Sorting microplastics from other materials in water samples by ultra-high-definition imaging

Contact Info

Product

Resources

About