MFI, BEA and FAU zeolite scavenging role in neonicotinoids and radical species elimination

• DOI: 10.1039/d1em00437a
• Publication Date: 2021-12-24T11:41:05Z
• Authors: M. Milojević-Rakić; D. Popadić; A. Janošević Ležaić; A. Jevremović; B. Nedić Vasiljević; S. Uskoković-Mark...; D. Bajuk-Bogdanović
• Keywords: Acetamiprid; Siloxane; Scavenging; Ecotoxicity; Hydroxyl radical

Ecotoxicity caused by neonicotinoid pesticides is largely due to oxidative stress on non-target species. Due the fact that reactive radical species reach environment, materials intended for pesticide removal should be applicable simultaneous of radicals, as well. This work uses spectroscopic, adsorptive and antioxidant responses from MFI, FAU BEA zeolites descriptors their potential environmental importance. Different network structures Si/Al ratios were correlated with excellent zeolite adsorption properties, over 200 mg g-1 investigated neonicotinoids, acetamiprid imidacloprid, was achieved in one cycle. Additionally, after two regeneration steps, 450 adsorbed retained, three cycles. Overall best results detected zeotype both tested applications, insecticide radical-scavenging performance, without insecticides present. The proposed mechanism relies kinetic investigation, isotherm modelling spectroscopic post-adsorption analysis targets hydroxyl/siloxane groups active sites via hydrogen bonding. Neat, well-defined enable prospective application ecotoxic removal.