A comparison of the removal efficiencies of Myriophyllum spicatum L. for zinc oxide nanoparticles (ZnO NP) in different

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RESEARCH ARTICLE

A comparison of the removal efficiencies of Myriophyllum spicatum L. for zinc oxide nanoparticles (ZnO NP) in different media: a microcosm approach Mehmet Borga Ergönül 1

&

Danial Nassouhi 1 & Meltem Çelik 2 & Sibel Atasağun 1

Received: 10 June 2020 / Accepted: 4 October 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020

Abstract The phytoremediation potential of Myriophyllum spicatum L. has been well documented for bulk-sized heavy metals, including zinc (Zn). However, there is no information on the removal efficiencies of this aquatic macrophyte for zinc oxide nanoparticles contaminated waters. Therefore, the present study was aimed to compare the removal efficiency of M. spicatum in two different media: tap water and pond water. Results were evaluated by comparing percentage (%) removal and goodness-of-fit to regression models. Plants were exposed to 0.8 and 2 ppm nano-sized Zn for 1, 4, and 7 days. The zinc concentrations were monitored using ICP-MS. The %removal in tap water ranged between 29.5 and 70.3%, and slightly higher in pond water. Modeling results confirmed that there was a strong relationship between removal performance and exposure duration. Time-dependent removal shows that %removal shows no further progress after 4 days. Our results also indicate that planktonic communities in pond water might play an important role in the fate of ZnO NPs. Keywords Nanoparticles . Nanomaterials . Phytoremediation . Myriophyllum . Pollution . Microcosm

Introduction Engineered nanomaterials (ENM) range between 1 and 100 nm in size and they have unique physical and chemical properties enabling them to be used in a wide range of applications (Joo and Zhao 2017; Yu et al. 2017). They have several beneficial uses in medicine, industry, agriculture, and in the manufacturing of several household goods. Therefore, nanomaterial (NM) production showed an exponential increase during the last decades (Naahidi et al. 2013) which inevitably lead to a notable increase in the amount of nanoparticles (NPs) released into environment (Maurer-Jones et al. 2013; Yu et al. 2017; Goswami et al. 2017). Responsible Editor: Philipp Gariguess * Mehmet Borga Ergönül [email protected]; [email protected] 1

Department of Biology, Faculty of Science, Ankara University, 06100 Ankara, Turkey

2

Department of Chemistry, Faculty of Science, Ankara University, 06100 Ankara, Turkey

Aquatic habitats are the final sink for several environmental pollutants. Thus, pollutants, including NMs pose a global health concern for aquatic organisms and humans (Troester et al. 2016; Jahan et al. 2017). Several environmental variables including pH, temperature, light, and presence of organic and inorganic matter may affect the properties, transport, bioavailability, and toxicity of ENMs (Peng et al. 2017). As a result, their fate and the environmental risks they cause in natural environment is uncertain (Olkhovych et al. 2016; Wang et al. 2016a). Therefore, studies carried out in complex matrices including microcosm