Interfacial interactions between collected nylon microplastics and three divalent metal ions (Cu(II), Ni(II), Zn(II)) in aqueous solutions

Microplastics and suspended particles in a strongly impacted coastal environment: Composition, abundance, surface texture, and interaction with metal ions

“…On the other hand, these same researchers also demonstrated that divalent metal ions as Ni 2+ , Cu 2+ , and Zn 2+ could be interacting with some carboxylate anions through electrostatic attraction, as well as hydroxyl and carboxyl groups through chemisorption on surface Nylon MPs (Tang et al 2021). According to environmental variables of the water column of BBE and the study reported by Tang et al (2020;2021), the high values of salinity, alkaline pH, and dissolved organic matter of autochthonous origin (with low degree of aromaticity and microbial origin, Martinez personal communication) could be affecting the adsorption process of some heavy metal ions on aged Nylon microplastics present in the estuarine water. On the other hand, Fernandez found some black fragments and polymer fibers in the abdominal muscle of shrimps (Pleoticus muelleri) from the BBE.…”

“…In the recent two years, many papers have reported the interaction between MPs and metal ions (Pb, Zn, Ni, Cu) such as Tang et al (2020;2021). In particular, Tang et al (2020) studied under laboratory conditions, the adsorption process of Pb 2+ ions on aged surface Nylon MPs as a function of fulvic acid concentration, ionic strength, and pH (Tang et al 2020).…”

“…In the recent two years, many papers have reported the interaction between MPs and metal ions (Pb, Zn, Ni, Cu) such as Tang et al (2020;2021). In particular, Tang et al (2020) studied under laboratory conditions, the adsorption process of Pb 2+ ions on aged surface Nylon MPs as a function of fulvic acid concentration, ionic strength, and pH (Tang et al 2020). These authors concluded that the adsorption of Pb 2+ ions on Nylon MPs was spontaneous and endothermic, and this metal ion can form complexes with a surface carboxyl group on the surface of the MPs.…”

Microplastics Pollution as an Invisible Potential Threat to Food Safety and Security, Policy Challenges and the Way Forward

“…The acute toxicity of methamphetamine in association with microplastics is significantly increased through oxidative damage and apoptosis in snails, and this may have an impact through the entire aquatic food chain [119]. Nylon microplastics have been found to adsorb three divalent metals (copper, nickel and zinc), and these metals are common pollutants in water environments which now have microplastics as carriers, thus showing the toxicity potential of microplastics together with other compounds [120]. Microplastics also serve as carriers of bisphenols and may provide an important route for increasing health risks.…”

Isotherm and selectivity study of Ni(II) removal using natural and acid-activated nanobentonites

“…The effects of modified adsorbents have been studied and the adsorption of nickel increased by acid activation (Bhattacharyya & Gupta 2008) and thermal treatment of bentonites (García-Carvajal et al 2019). The equilibrium results of nickel adsorption on bentonite can be described using different adsorption isotherm models (Bhattacharyya & Gupta 2008;Ghomri et al 2013), pseudo-first and pseudo-second orders (Yagmur 2020), and Elovich and pseudo-second order equations (Iqbal et al 2019;Tang et al 2021). Other researchers' studies also showed that pseudo second-order kinetic model revealed better agreement with kinetic experimental data as matched with other kinetic models (Imran et al 2021).…”