4.7 Article

Effect of ZnO nanoparticles on Zn, Cu, and Pb dissolution in a green bioretention system for urban stormwater remediation

期刊

CHEMOSPHERE
卷 282, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2021.131045

关键词

Stormwater runoff; Heavy metals; Nature-based solutions; Phytoremediation; Wastewater; Water pollution

资金

  1. European Union's Hori-zon 2020 research and innovation programme under the Marie Skodowska Curie grant [704957]
  2. Marie Curie Actions (MSCA) [704957] Funding Source: Marie Curie Actions (MSCA)

向作者/读者索取更多资源

Stormwater runoff from urban and suburban areas may carry hazardous pollutants like metals and pharmaceuticals into aquatic ecosystems. The presence of zinc oxide engineered nanoparticles (ZnO-NPs) in urban stormwater and bioretention systems raises concerns about increased stormwater toxicity and reduced treatment infrastructure performance. Additional research evaluating the impact of ZnO-NPs on stormwater toxicity and metal accumulation in wetland plants was also conducted.
Stormwater runoff from urban and suburban areas can carry hazardous pollutants directly into aquatic ecosystems. These pollutants, such as metals, nutrients, aromatic hydrocarbons, pesticides, and pharmaceuticals, are very toxic to aquatic organisms. Recently, significant amounts of zinc oxide engineered nanoparticles (ZnO-NPs) have been detected in urban stormwater and its bioretention systems. This raises concerns about a potential increase of stormwater toxicity and reduced performance of the treatment infrastructures. To tackle these issues, we developed a simple, low-cost bioretention system to remediate stormwater and retain ZnO-NPs. This system retained up to 73% Zn, 66% Cu, and >99% Pb. However, the removal efficiency for Pb was lower after adding ZnO-NPs to the system, possibly due to the remobilization of Pb phosphates. The effect of ZnO-NPs on stormwater toxicity and metal accumulation in wetland plants was also evaluated.

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