Describing Phosphorus Sorption Processes on Volcanic Soil in the Presence of Copper or Silver Engineered Nanoparticles
| Autor: | Patricia Poblete-Grant, Alejandra A. Jara, María de la Luz Mora, Roland Bol, Nicolás Arancibia-Miranda, Erwin Klumpp, Jonathan Suazo-Hernández |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
lcsh:QE351-399.2
chemistry.chemical_element 010501 environmental sciences 01 natural sciences volcanic soil symbols.namesake Adsorption nutrients Desorption ddc:550 pollution Organic matter phosphorus 0105 earth and related environmental sciences organic matter chemistry.chemical_classification lcsh:Mineralogy Phosphorus engineered nanoparticles Langmuir adsorption model Geology Sorption 04 agricultural and veterinary sciences Geotechnical Engineering and Engineering Geology Andisol chemistry adsorption Environmental chemistry Soil water 040103 agronomy & agriculture symbols 0401 agriculture forestry and fisheries |
| Zdroj: | Minerals Volume 11 Issue 4 Minerals 11(4), 373-(2021). doi:10.3390/min11040373 Minerals, Vol 11, Iss 373, p 373 (2021) |
| ISSN: | 2075-163X |
| DOI: | 10.3390/min11040373 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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