20.500.12556/RUL-144853 Distribution and removal of microplastics in a horizontal sub-surface flow laboratory constructed wetland and their effects on the treatment efficiency Constructed wetlands are commonly used to treat domestic wastewater, but the extent to which microplastics are retained in constructed wetlands and the impact this has on their efficiency are not known. In this context, we investigated retention of microplastics (microbeads and fibres) and their effects on the removal of carbonaceous (expressed as chemical oxygen demand (COD), biochemical oxygen demand (BOD$_5$), and dissolved organic carbon (DOC)), nitrogenous (N-NH$_4^+$, N-NO$_3^-$, and N-NO$_2^-$), and phosphorous (P-PO$_4^{3-}$) matters in a horizontal sub-surface flow laboratory constructed wetland (LCW) under continuous flow. The LCW was in operation for 257 days, with the first 78 days without microplastics and microplastics added weekly during the next 179 days. The presence of microplastics had no significant effect on COD, BOD$_5$, DOC, N-NH$_4^+$, and N-NO$_3^-$ removal, while a statistically significant decrease in N-NO$_2^-$ and an increase in P-PO$_4^{3-}$ concentrations in the effluent were observed after the addition of microplastics. Microplastics were efficiently retained in the LCW, and only 0.296% and 0.003% of the total microbeads and fibres, respectively, were detected in the effluent. Thus, it is evident that constructed wetlands are an effective barrier to the release of microplastics into the aquatic environment, but the high retention and thus continuous accumulation of microplastics may alter the nutrient cycling in constructed wetlands. microplastics constructed wetland wastewaters bioremediation lagoons macrophytes microbeads wastewater treatment fibres mikroplastika rastlinska čistilna naprava odpadne vode bioremediacija true false true Angleški jezik Slovenski jezik Članek v reviji 2023-03-17 08:15:26 2023-03-17 08:15:27 2023-08-31 03:45:16 0000-00-00 00:00:00 2023 0 0 9 str. art. 142076 Vol. 461 1 Apr. 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 628.32 1385-8947 10.1016/j.cej.2023.142076 143710979 1-s2.0-S1385894723008070-main.pdf 1-s2.0-S1385894723008070-main.pdf 1 6DA5A4508E85AB473CC33FA7A57996C7 0bc11f8079b396f9fd131b4fed9ad4967ed7b6dd0911604f1338adb0343b4c24 1f9eb592-c496-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=167405 https://www.sciencedirect.com/science/article/pii/S1385894723008070 1 6de82513-c493-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=167404 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0