Ecotoxicogenomic analysis of stress induced on Caenorhabditis elegans in heavy metal contaminated soil after nZVI treatment

Fajardo, Carmen; Martín, Margarita; Nande, Mar; Botías, Pedro; García-Cantalejo, Jesús; Mengs, Gerardo; Costa, Gonzalo

doi:10.1016/j.chemosphere.2020.126909

Cited by 17 publications

(3 citation statements)

References 57 publications

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“…In recent years, nanoscale zero-valent iron particles (nZVFe) with sizes ranging from 1 to 100 nm at least one dimension have shown good potential as an environmentally friendly strong reducing agent for removing various pollutant [13], for instance, HMs such as nickel (Ni), cadmium (Cd), copper (Cu), hexavalent chromium [Cr(VI)], cobalt (Co), arsenic (As), mercury (Hg), and lead (Pb) from wastewater and polluted water [14][15][16]. As a result of their high surface energy, direct interparticle interactions, and intrinsic magnetic interaction, bare iron nanoparticles (NPs) tend to agglomerate into micron or larger solid particles.…”

Section: Introductionmentioning

confidence: 99%

Pb(II) Removal from Aqueous Solutions by Adsorption on Stabilized Zero-Valent Iron Nanoparticles—A Green Approach

Sepehri

Kanani

Abdoli

et al. 2023

Water

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Nano zero-valent iron particles (nZVFe) are known as one of the most effective materials for the treatment of contaminated water. However, a strong tendency to agglomerate has been reported as one of their major drawbacks. The present study describes a green approach to synthesizing stabilized nZVFe, using biomass as a porous support material. Therefore, in the first step, biomass-derived activated carbon was prepared by thermochemical procedure from rice straw (RSAC), and then the RSAC-supported nZVFe composite (nZVFe–RSAC) was employed to extract Pb(II) from aqueous solution and was successfully synthesized by the sodium borohydride reduction method. It was confirmed through scanning electron microscopy (SEM) and X-ray diffraction (XRD) characteristics that the nZVFe particles are uniformly dispersed. Results of the batch experiments showed that 6 (g L−1) of this nanocomposite could effectively remove about 97% of Pb(II) ions at pH = 6 from aqueous solution. The maximum adsorption capacities of the RS, RSAC, and nZVFe–RSAC were 23.3, 67.8, and 140.8 (mg g−1), respectively. Based on the results of the adsorption isotherm studies, the adsorption of Pb(II) on nZVFe–RSAC is consistent with the Langmuir–Freundlich isotherm model R2=0.996). The thermodynamic outcomes exhibited the endothermic, possible, and spontaneous nature of adsorption. Adsorption enthalpy and entropy values were determined as 32.2 kJ mol−1 and 216.9 J mol−1 K−1, respectively. Adsorption kinetics data showed that Pb(II) adsorption onto nZVFe–RSAC was fitted well according to a pseudo-second-order model. Most importantly, the investigation of the adsorption mechanism showed that nZVFe particles are involved in the removal of Pb(II) ions through two main processes, namely Pb adsorption on the surface of nZVFe particles and direct role in the redox reaction. Subsequently, all intermediates produced through the redox reaction between nZVFe and Pb(II) were adsorbed on the nZVFe–RSAC surface. According to the results of the NZVFe–RSAC recyclability experiments, even after five cycles of recovery, this nanocomposite can retain more than 60% of its initial removal efficiency. So, the nZVFe–RSAC nanocomposite could be a promising material for permeable reactive barriers given its potential for removing Pb(II) ions. Due to low-cost and wide availability of iron salts as well as rice biowaste, combined with the high adsorption capacity, make nZVFe–RSAC an appropriate choice for use in the field of Pb(II) removal from contaminated water.

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Section: Introductionmentioning

confidence: 99%

Pb(II) Removal from Aqueous Solutions by Adsorption on Stabilized Zero-Valent Iron Nanoparticles—A Green Approach

Sepehri

Kanani

Abdoli

et al. 2023

Water

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“…Also, nZVI particles have been widely used in soil and groundwater decontamination (Fajardo et al, 2020). Due to large dosage and high mobility of nZVI (easily entering farmland ecosystems with water), there exists potential accumulation risk in soils.…”

Section: Introductionmentioning

confidence: 99%

“…However, the roles of iron nanoparticles in affecting the structure and function of AMF-plant symbionts remain subject to debate. Also, nZVI particles have been widely used in soil and groundwater decontamination (Fajardo et al, 2020). Due to large dosage and high mobility of nZVI (easily entering farmland ecosystems with water), there exists potential accumulation risk in soils.…”

mentioning

confidence: 99%

Rhizosphere effect of nanoscale zero‐valent iron on mycorrhiza‐dependent maize assimilation

Yang

Ying

Naseer

et al. 2022

Plant Cell & Environment

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Rhizosphere effect of nanoscale zero‐valent iron (nZVI) is crucial but little reported. Maize seeds were dressed with four nZVI concentrations (0, 1.0, 1.5, 2 g kg−1) and inoculated with arbuscular mycorrhizal fungus (AMF) (Funneliformis mosseae). The SEM images illuminated that excessive nZVI particles (2 g kg−1) were agglomerated on the surface of hyphae and spore, causing severe deformation and inactivation of AMF symbionts and thereafter inhibiting water uptake in maize seedlings. This restrained the scavenging effects of enzymatic (superoxide dismutase, peroxidase) and non‐enzymatic compounds (proline & malondialdehyde) on ROS, and leaf photoreduction activity and gas exchange ability (p < 0.05). Interestingly, the inoculation with AMF effectively alleviated above negative effects. In contrast, appropriate dose of nZVI, that is, ≤1.5 g kg−1, can be evenly distributed on the hyphae surface and form the ordered symbionts with AMF. This help massively to enhance hyphae growth and water and nutrient uptake. The enhanced mycorrhizal infection turned to promote rhizosphere symbiont activity and leaf Rubisco and Rubisco activase activity. Light compensation point was massively lowered, which increased photosynthetic carbon supply for AMF symbionts. Particularly, such priming effects were evidently enhanced by drought stress. Our findings provided a novel insight into functional role of nZVI in agriculture and AMF‐led green production.

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Characteristics and pollution risks of potentially toxic elements and nematode community structure on farm soil near coal mines

Yang

Cheng

Wang

et al. 2022

Environ Geochem Health

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Ecotoxicogenomic analysis of stress induced on Caenorhabditis elegans in heavy metal contaminated soil after nZVI treatment

Cited by 17 publications

References 57 publications

Pb(II) Removal from Aqueous Solutions by Adsorption on Stabilized Zero-Valent Iron Nanoparticles—A Green Approach

Pb(II) Removal from Aqueous Solutions by Adsorption on Stabilized Zero-Valent Iron Nanoparticles—A Green Approach

Rhizosphere effect of nanoscale zero‐valent iron on mycorrhiza‐dependent maize assimilation

Characteristics and pollution risks of potentially toxic elements and nematode community structure on farm soil near coal mines

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