Describing Phosphorus Sorption Processes on Volcanic Soil in the Presence of Copper or Silver Engineered Nanoparticles

Abstract

Engineered nanoparticles (ENPs) present in consumer products are being released into the agricultural systems. There is little information about the direct effect of ENPs on phosphorus (P) availability, which is an essential nutrient for crop growthnaturally occurring in agricultural soils. The present study examined the effect of 1, 3, and 5% doses of Cu0 or Ag0 ENPs stabilized with L-ascorbic acid (suspension pH 2–3) on P ad- and desorption in an agricultural Andisol with total organic matter (T-OM) and with partial removal of organic matter (R-OM) by performing batch experiments. Our results showed that the adsorption kinetics data of H2PO4− on T-OM and R-OM soil samples with and without ENPs were adequately described by the pseudo-second-order (PSO) and Elovich models. The adsorption isotherm data of H2PO4− from T-OM and R-OM soil samples following ENPs addition were better fitted by the Langmuir model than the Freundlich model. When the Cu0 or Ag0 ENPs doses were increased, the pH value decreased and H2PO4− adsorption increased on T-OM and R-OM. The H2PO4− desorption (%) was lower with Cu0 ENPs than Ag0 ENPs. Overall, the incorporation of ENPs into Andisols generated an increase in P retention, which may affect agricultural crop production.

Cd2+ Sorption Alterations in Ultisol Soils Triggered by Different Engineered Nanoparticles and Incubation Times

“…In general, the morphology observed in the three types of ENPs was spherical (Figure 1), with a high aggregation in the case of FeNPs; a phenomenon frequently reported in the literature as a consequence of the oxidation processes and magnetic properties that characterize these nanoparticles [16]. CuNPs and AgNPs showed a lower aggregation due to the absence of magnetic strength [61] and their reduction potentials, which have a lower tendency to form oxides compared with Fe. The average diameters for FeNPs, CuNPs and AgNPs were 46 ± 2, 33 ± 1 and 29 ± 1 nm, respectively (Figure 1).…”

Impact on Some Soil Physical and Chemical Properties Caused by Metal and Metallic Oxide Engineered Nanoparticles: A Review

“…In the same way, Koopmans et al [ 105 ], using ferrihydrite of a size between 2–3 nm and a surface area of about 5.4 m 2 g −1 , determined that the phosphate concentration in the 0.01 M CaCl 2 soil extracts decreased. Recently, Suazo-Hernández et al [ 26 , 27 ] determined that L-ascorbic acid-coated Cu or Ag ENPs increased phosphate adsorption in an Andisol and its fractions. Particularly, in Suazo-Hernández et al [ 26 ], using the Langmuir model, they concluded that by increasing Ag or Cu NPs content from 0 to 5%, the q max values of Pi for the Andisol increased by 46% and 54% following the addition of Cu or Ag ENPs, respectively.…”

“…Recently, Suazo-Hernández et al [ 26 , 27 ] determined that L-ascorbic acid-coated Cu or Ag ENPs increased phosphate adsorption in an Andisol and its fractions. Particularly, in Suazo-Hernández et al [ 26 ], using the Langmuir model, they concluded that by increasing Ag or Cu NPs content from 0 to 5%, the q max values of Pi for the Andisol increased by 46% and 54% following the addition of Cu or Ag ENPs, respectively. These results were attributed to a decrease in soil solution, which is due to the coating of ENPs with L-ascorbic acid and probably some dissolved L-ascorbic acid.…”

“…As a result, ENPs can cause changes in the biological (e.g., mesofauna, macrofauna, and microbiota), physical (e.g., hydraulic conductivity, porosity, texture, bulk density, aggregation), and chemical (e.g., cation exchange capacity (CEC), electricity conductivity (EC), redox potential (Eh), pH, dissolved organic matter (DOM), and organic matter (OM) content) properties of the soil [ 16 , 20 , 23 , 24 , 25 ]. In fact, due to their small particle size, ENPs can interact with plant nutrients, like phosphorus (P), affecting their availability in the soil solution [ 26 , 27 , 28 ].…”

Editorial for Special Issue “Elemental Concentration and Pollution in Soil, Water, and Sediment”

“…Their findings help to understand the environmental transportation behavior of organoarsenicals by evaluating the potential hazards associated with the usage of organic arsenic feed additives. Last but not least, in studies done with soil fractions, Suazo-Hernández and co-authors [9] analyzed the effect of metal (Cu, Ag) engineered nanoparticles on phosphorous availability in an agricultural Andisol and observed that the incorporation of the studied nanoparticles into the selected soil generated an increase in P retention, which may affect agricultural crop production.…”