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Plastic particles in urban compost and their grain size distribution.
Brtková, Hana; Ruzicková, Jana; Slamová, Karolina; Raclavská, Helena; Kucbel, Marek; Safár, Michal; Gikas, Petros; Juchelková, Dagmar; Svédová, Barbora; Flodrová, Sárka.
Afiliação
  • Brtková H; Centre CEET/ENET, VSB - Technical University of Ostrava, Ostrava-Poruba, Moravian-Silesian Region, 708 00, Czech Republic.
  • Ruzicková J; Centre CEET/ENET, VSB - Technical University of Ostrava, Ostrava-Poruba, Moravian-Silesian Region, 708 00, Czech Republic.
  • Slamová K; Institute of Foreign Languages, VSB - Technical University of Ostrava, Ostrava-Poruba, Moravian-Silesian Region, 708 00, Czech Republic.
  • Raclavská H; Centre CEET/ENET, VSB - Technical University of Ostrava, Ostrava-Poruba, Moravian-Silesian Region, 708 00, Czech Republic.
  • Kucbel M; Centre CEET/ENET, VSB - Technical University of Ostrava, Ostrava-Poruba, Moravian-Silesian Region, 708 00, Czech Republic. Electronic address: marek.kucbel@vsb.cz.
  • Safár M; Centre CEET/ENET, VSB - Technical University of Ostrava, Ostrava-Poruba, Moravian-Silesian Region, 708 00, Czech Republic.
  • Gikas P; School of Chemical and Environmental Engineering, Technical University of Crete, Kounoupidiana, Akrotiri, 731 00 Chania, Greece.
  • Juchelková D; Department of Electronics, VSB - Technical University of Ostrava, Ostrava-Poruba, Moravian-Silesian Region, 708 00, Czech Republic.
  • Svédová B; Centre CEET/ENET, VSB - Technical University of Ostrava, Ostrava-Poruba, Moravian-Silesian Region, 708 00, Czech Republic.
  • Flodrová S; Department of Power Engineering, VSB - Technical University of Ostrava, Ostrava-Poruba, Moravian-Silesian Region, 708 00, Czech Republic.
Environ Pollut ; 351: 124025, 2024 Jun 15.
Article em En | MEDLINE | ID: mdl-38670428
ABSTRACT
Gathering information on plastic particles in composts and the processes they undergo is important in terms of potentially limiting their further entry into the environment, for example, in improving the fertilising properties of soils. Microplastics (MPs) were determined in composts produced from urban greenery. They are present in decreasing order polyethylene terephthalate, polystyrene, polyethylene, and polypropylene. The determination of polymers and additives used to improve their properties was performed by pyrolysis and gas chromatography with mass spectrometric detection (Py-GC/MS). Additives and microplastics are most concentrated in composts in the 0.315-0.63 and 0.63-1.25 mm grain size class, together with the carbon contained in the compost dry matter. Additives form 0.11-0.13% of MPs in dry matter of compost. The average concentration of microplastics in the particle size class from 0.63 to 1.25 mm is 2434 ± 224 mg/kg; in the total sample of composts, it is 1368 ± 286 mg/kg of P-MPs. For composts with particle size <2.5 mm, a relationship between the C/N ratio and the plastic particle concentration was statistically significant. It documents a similar behaviour of lignocellulose and plastic particles during the degradation processes. A relationship between the concentration of polymer markers and additives in the compost dry matter and their concentrations in the leachate has been demonstrated. The leachability from compost is higher for additives than for chemical compounds originating from the decomposition of the main components of MPs. The suitability of the use of the compost for agricultural purposes was monitored by the germination index (GI) for watercress. The lowest value of the GI was determined in the particle size class from 0.63 to 1.25 mm. The leachability of polymer markers and additives alone cannot explain the low GI value in this grain size class. The GI value is also influenced by the leachability of chemical compounds characterised by the value of dissolved organic carbon (DOC) and water-leachable nitrogen (Nw). A statistically significant dependence between DOC/Nw and the germination index value was found.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Tamanho da Partícula / Plásticos / Solo / Compostagem / Microplásticos Idioma: En Revista: Environ Pollut Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2024 Tipo de documento: Article País de afiliação: República Tcheca

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Tamanho da Partícula / Plásticos / Solo / Compostagem / Microplásticos Idioma: En Revista: Environ Pollut Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2024 Tipo de documento: Article País de afiliação: República Tcheca