Microplastics in the environment occur different sizes and shapes are made of various polymers. Therefore, they also considerably differ their properties ecotoxicity. However, majority microplastics research uses pre-made spherical microplastics, which practically do not exist environment. Our work focused on a comprehensive study six types microplastic that were prepared to simulate common found All where chemically physically characterized using Fourier-transform infrared spectroscopy,...

The presence of microplastics (MPs) in the environment has raised many concerns, and therefore approaches technologies to remove them situ are high interest. In this context, we investigated interactions between polyethylene MPs (fragments with a mean size 149 ± 75 μm) an aquatic floating macrophyte Lemna minor order assess its potential use for phytoremediation. We first long-term effects (100 mg/L = 9600 MPs/L), but still environmentally relevant concentration on L. minor. Subsequently...

Constructed wetlands are commonly used to treat domestic wastewater, but the extent which microplastics retained in constructed and impact this has on their efficiency not known. In context, we investigated retention of (microbeads fibres) effects removal carbonaceous (expressed as chemical oxygen demand (COD), biochemical (BOD5), dissolved organic carbon (DOC)), nitrogenous (N-NH4+, N-NO3-, N-NO2-), phosphorous (P-PO43-) matters a horizontal sub-surface flow laboratory wetland (LCW) under...

Microplastics in the aquatic environment serve as a habitat for microbial life, on which they can form biofilms. However, how development of biofilm alters properties floating microplastics that are at air-water interface and, therefore, not fully submerged, is well understood. In this context, an aging experiment was conducted to monitor formation and changes physico-chemical low-density polyethylene (floating) over time. The growth followed typical bacterial/biofilm phases reached about...

Tire wear microplastics (TWM) are formed by friction between tires and road surfaces during driving they belong among the most abundant in environment. However, information about their fate environment is still unknown. The aim of this study was to investigate aging TWM freshwater under controlled laboratory conditions over 12 weeks. development biofilm, changes physical properties chemical composition, leaching biodegradation were followed. results showed colonization surface microorganisms...

In this study, we investigated the interactions between titanium dioxide (nTiO2) and zinc oxide (nZnO) nanoparticles polyethylene microplastics (MPs) with respect to their adsorption subsequent desorption in aquatic media. Adsorption kinetic models revealed rapid of nZnO compared nTiO2, while nTiO2 was adsorbed a greater extent – four times more (67%) on MPs than (16%). The low can be explained by partial dissolution from form Zn(II) and/or aqua-hydroxo complexes (e.g. [Zn(OH)]+, [Zn(OH)3]−,...

Water-soluble polymers (WSPs) are organic materials that have been used for decades in various applications as part of paints, coatings, adhesives, washing agents, pharmaceuticals, personal care products and cosmetics. However, their ecotoxicity, biodegradability, overall impact on the environment still unknown. In this study four polyacrylic acid- based WSPs (three solid state one liquid state), which widely cosmetic industry, were tested terms ecotoxicity biodegradability. The tests...

Biomonitoring has become an indispensable tool for detecting various environmental pollutants, but microplastics have been greatly neglected in this context. They are currently monitored using multistep physico-chemical methods that time-consuming and expensive, making the search new monitoring options of great interest. In context, aim study was to investigate possibility aquatic macrophyte as a bioindicator microplastic pollution freshwaters. Therefore, effects adhesion three types...

Bakelite, the first synthetic plastic, is a rather unexplored material in field of ecotoxicology, despite its long production and use. The aim this study was to investigate ecotoxicity Bakelite microplastics (before after leaching) leachates on four aquatic organisms: crustacean Daphnia magna, plant Lemna minor, bacterium Allivibrio fischeri alga Pseudokirchneriella subcapitata. before leaching affected all organisms, but varying degrees. Leachates showed increased while subcapitata more by...

Microplastics found in the environment are often covered with a biofilm, which makes their analysis difficult. Therefore, biofilm is usually removed before analysis, may affect microplastic particles or lead to loss during procedure. In this work, we used laser-based analytical techniques and evaluated performance detecting, characterizing, classifying pristine aged microplastics developed biofilm. Five types of from different polymers were selected (polyamide, polyethylene, polyethylene...

The shape-dependent effects of microplastics have been studied in the context ingestion but not considered other environmental processes. Therefore, we investigated how shape polyethylene (spheres, fragments, and films) affects interactions with plants, aging, their adsorption properties. had no effect on growth rate chlorophyll content duckweed Lemna minor, fragments strongly adhered to plant biomass reduced root length. process model organic compound (methylene blue dye) was described by...

Microplastics in the aquatic environment can interact with plants, but consequences of these interactions are poorly understood. Therefore, aim this study was to investigate effects microplastics commonly found environment, namely polyethylene (PE) fragments, polyacrylonitrile (PAN) fibres, tire wear (TW) particles under a relevant environmental concentration (5000 particles/L) on growth, cell viability, physiology, and elemental content macrophyte Elodea canadensis. The were compared those...

Due to the increasing amount of microplastics (MPs) in environment, various technologies for their removal have been investigated. One possible are phytoremediation methods, but insufficient understanding interactions between MPs and aquatic macrophytes limits further development. In this context, aim study was investigate polyethylene floating macrophyte Lemna minor terms extent time frame adhesion plant biomass, stability under water movement nature adsorption process through isotherm...

The present study investigated the adsorption mechanism of titanium dioxide nanoparticles (nTiO2) on polyethylene microplastics (MPs) and resulting photocatalytic properties. This effort was supported by ecotoxicological assessments MPs with adsorbed nTiO2 immobility behaviour Daphnia magna in presence absence UV irradiation. results showed that were rapidly surface (72% 9 h). experimental data fit well pseudo-second order kinetic model. Both suspended immobilized exhibited comparable...

People are exposed to microplastics (MPs) on a large scale in everyday life. However, it is not clear whether MPs can also be distributed and retained certain tissues. Therefore, the development of analytical methods capable detecting specific human organs/tissues utmost importance. In this study, use combination spectroscopic techniques, namely Raman microspectroscopy laser-induced breakdown spectroscopy (LIBS), was tested for detection polyethylene (PE) tonsils. Preliminary results showed...

The aim of the study was to determine oxidation potential selected persistent, environmentally relevant antibiotics (Amoxicillin, Levofloxacin, and their mixture with Vancomycin) reduce environmental emissions. Ozonation (O3) indirect ozonation at pH 9.5 (O3/pH9.5) were catalytically enhanced by addition Fe2+ (O3/Fe2+) photocatalytic in combination UV-A black light (O3/Fe2+/UV) two temperatures using total organic carbon (TOC) chemical oxygen demand (COD) identify formation by-products....

In this study, we investigated the interaction between titanium dioxide (nTiO2) and zinc oxide (nZnO) nanoparticles polyethylene microplastics (MPs) with respect to their adsorption subsequent desorption in aquatic media. Adsorption kinetic models revealed rapid of nZnO, while nTiO2 was adsorbed a higher extent - four times more (67%) on MPs than nZnO (16%). The low can be explained by partial dissolution from form Zn(II) and/or aqua-hydroxo complexes (e.g. [Zn(OH)]+, [Zn(OH)3]-,...

Microplastics have been part of personal care products for years, but due to microplastic pollution, many companies replaced microplastics with natural particles, such as microcrystalline cellulose.Although particles are considered more environmentally friendly, their ecotoxicological profile is unknown.In this context, the aim study was compare ecotoxicity polyethylene and cellulose microbeads, both extracted from a cosmetic product.The effects two types on aquatic macrophyte Lemna minor...