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Jonathan Marcelo Suazo Hernandez
Center of Plant, Soil Interaction and Natural Resources Biotechnology, Scientific and Biotechnological Bioresource Nucleus (BIOREN-UFRO), Universidad de La Frontera, Avenida Francisco Salazar, 01145 Temuco, Chile

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Journal article
Published: 01 April 2021 in Minerals
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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 growth naturally 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.

ACS Style

Jonathan Suazo-Hernández; Erwin Klumpp; Nicolás Arancibia-Miranda; Patricia Poblete-Grant; Alejandra Jara; Roland Bol; María De La Luz Mora. Describing Phosphorus Sorption Processes on Volcanic Soil in the Presence of Copper or Silver Engineered Nanoparticles. Minerals 2021, 11, 373 .

AMA Style

Jonathan Suazo-Hernández, Erwin Klumpp, Nicolás Arancibia-Miranda, Patricia Poblete-Grant, Alejandra Jara, Roland Bol, María De La Luz Mora. Describing Phosphorus Sorption Processes on Volcanic Soil in the Presence of Copper or Silver Engineered Nanoparticles. Minerals. 2021; 11 (4):373.

Chicago/Turabian Style

Jonathan Suazo-Hernández; Erwin Klumpp; Nicolás Arancibia-Miranda; Patricia Poblete-Grant; Alejandra Jara; Roland Bol; María De La Luz Mora. 2021. "Describing Phosphorus Sorption Processes on Volcanic Soil in the Presence of Copper or Silver Engineered Nanoparticles." Minerals 11, no. 4: 373.

Journal article
Published: 31 May 2020 in Journal of Hazardous Materials
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Imogolite and magnetic imogolite-Fe oxide nanocomposites (Imo-Fe50 and Imo-Fe25, at 50 and 25 % Fe loading (w/w), respectively) were synthesized and tested for the removal of aqueous copper (Cu), cadmium (Cd), and arsenic (As) pollutants. The materials were characterized by transmission electron microscopy, and specific surface area and isoelectric point measurements. The Fe-containing samples were additionally characterized by Mössbauer spectroscopy and vibrating-sample magnetometry. Significant differences were found in the morphological, electrophoretic, and magnetic characteristics between imogolite and the nanocomposites. The in-situ Fe-oxide precipitation process modified the active surface sites of the imogolite. The Fe–oxide, mainly magnetite, favored the contaminants’ adsorption over the pristine imogolite. The adsorption kinetics of these pollutants were adequately described by the pseudo-second order and intraparticle diffusion models. The kinetic models showed that surface adsorption was more important than intraparticle diffusion in the removal of the pollutants by all the adsorbents. The Langmuir-Freundlich model described the experimental adsorption data, and both nanocomposites showed greater adsorption capacity than the imogolite. The adsorption of Cu and Cd was sensitive to cationic competition, showing a decrease of the adsorption capacity when the two cations coexisted, while their adsorption increased in the presence of arsenate.

ACS Style

Nicolás Arancibia-Miranda; Karen Manquián-Cerda; Carmen Pizarro; Tamara Maldonado; Jonathan Marcelo Suazo Hernandez; Mauricio Escudey; Nanthi Bolan; Binoy Sarkar. Mechanistic insights into simultaneous removal of copper, cadmium and arsenic from water by iron oxide-functionalized magnetic imogolite nanocomposites. Journal of Hazardous Materials 2020, 398, 122940 .

AMA Style

Nicolás Arancibia-Miranda, Karen Manquián-Cerda, Carmen Pizarro, Tamara Maldonado, Jonathan Marcelo Suazo Hernandez, Mauricio Escudey, Nanthi Bolan, Binoy Sarkar. Mechanistic insights into simultaneous removal of copper, cadmium and arsenic from water by iron oxide-functionalized magnetic imogolite nanocomposites. Journal of Hazardous Materials. 2020; 398 ():122940.

Chicago/Turabian Style

Nicolás Arancibia-Miranda; Karen Manquián-Cerda; Carmen Pizarro; Tamara Maldonado; Jonathan Marcelo Suazo Hernandez; Mauricio Escudey; Nanthi Bolan; Binoy Sarkar. 2020. "Mechanistic insights into simultaneous removal of copper, cadmium and arsenic from water by iron oxide-functionalized magnetic imogolite nanocomposites." Journal of Hazardous Materials 398, no. : 122940.

Journal article
Published: 13 March 2020 in Geoderma Regional
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Andisols, rich in minerals like allophane, imogolite and iron- (Fe) or aluminum- (Al) oxides have high phosphorus (P) sorption capacity and require annual P additions to ensure plant productivity. It is known that the use of composted poultry manure (PM) increases soil labile P and carbon concentration, although the mechanisms controlling P availability and soil organic carbon (SOC) sequestration are not fully understood. The aim of this study was to investigate the relationship between soil available P and particles size distribution, SOC, and iron and aluminum complexes on Southern Chilean pastures with long-term PM amendment. Soil samples, were collected from 4 pastoral farms where PM had been applied annually at 3 tons ha−1 for 5 and 10 years. We analyzed for elemental concentrations, P forms through a modified P fractionation methodology and aggregation through particle size analyses and scanning electron microscopy. Moreover, we determined oxalate and pyrophosphate extractable Fe and Al. Andisols receiving long-term PM amendment had 22–65% higher SOC contents than unfertilized control likely due to improved aggregation capacity as indicated by greater soil particle size. Moreover, the readily available inorganic P increased by 56 to 286% between control and PM amended soils. Andisols amended with PM also showed lower oxalate extractable Al and Fe and higher pyrophosphate extractable forms. These parameters correlated with SOC, labile P concentrations and particle size distribution. We concluded that increased P availability under pastures growing on Andisol with long-term PM amendment is regulated by three mechanisms related to input of readily available P, release of native soil P and decreased availability of sorption sites.

ACS Style

Patricia Poblete-Grant; Jonathan Marcelo Suazo Hernandez; Leo Condron; Cornelia Rumpel; Rolando Demanet; Sparkle L. Malone; Maria Luz Mora. Soil available P, soil organic carbon and aggregation as affected by long-term poultry manure application to Andisols under pastures in Southern Chile. Geoderma Regional 2020, 21, e00271 .

AMA Style

Patricia Poblete-Grant, Jonathan Marcelo Suazo Hernandez, Leo Condron, Cornelia Rumpel, Rolando Demanet, Sparkle L. Malone, Maria Luz Mora. Soil available P, soil organic carbon and aggregation as affected by long-term poultry manure application to Andisols under pastures in Southern Chile. Geoderma Regional. 2020; 21 ():e00271.

Chicago/Turabian Style

Patricia Poblete-Grant; Jonathan Marcelo Suazo Hernandez; Leo Condron; Cornelia Rumpel; Rolando Demanet; Sparkle L. Malone; Maria Luz Mora. 2020. "Soil available P, soil organic carbon and aggregation as affected by long-term poultry manure application to Andisols under pastures in Southern Chile." Geoderma Regional 21, no. : e00271.

Journal article
Published: 01 April 2019 in Journal of Hazardous Materials
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We studied the sorption of As(V) in single and multi-component (As(V)-Se(VI)) aqueous systems using nanoscale zero-valent iron (nZVI) and nZVI-functionalized zeolite (Z-nZVI) adsorbents. Morphological and physico-chemical characterization of the adsorbents was conducted using X-ray diffraction (XRD), scanning electron microscopy (SEM), surface area and electrophoretic mobility measurements. SEM and XRD analyses showed that Fe-nanoparticle size and crystallinity were better preserved in Z-nZVI than nZVI after As(V) sorption. Highly efficient As(V) removal was achieved for all tested adsorbents with a minimal competition effect of Se(VI). In the single-component system, the equilibrium As(V) sorption time on nZVI and Z-nZVI was 40 and 60 min, respectively, while in the multi-component system, this time was 90 min for both the adsorbents. The Freundlich and pseudo-second-order models provided good fittings for the experimental sorption data (r2>0.96). The As(V) removal capacity was higher using Z-nZVI than nZVI both in the single and multi-component systems, suffering minimal differences in removal in both cases. The results suggested that Z-nZVI had more specific surface sites for As(V) than nZVI and zeolite, which makes Z-nZVI a more effective adsorbent than nZVI for the removal of As(V) from aqueous solutions in the presence of other oxyanions.

ACS Style

Jonathan Suazo-Hernández; Pamela Sepúlveda; Karen Manquián-Cerda; Rodrigo Ramírez-Tagle; María Angélica Rubio; Nanthi Bolan; Binoy Sarkar; Nicolás Arancibia-Miranda. Synthesis and characterization of zeolite-based composites functionalized with nanoscale zero-valent iron for removing arsenic in the presence of selenium from water. Journal of Hazardous Materials 2019, 373, 810 -819.

AMA Style

Jonathan Suazo-Hernández, Pamela Sepúlveda, Karen Manquián-Cerda, Rodrigo Ramírez-Tagle, María Angélica Rubio, Nanthi Bolan, Binoy Sarkar, Nicolás Arancibia-Miranda. Synthesis and characterization of zeolite-based composites functionalized with nanoscale zero-valent iron for removing arsenic in the presence of selenium from water. Journal of Hazardous Materials. 2019; 373 ():810-819.

Chicago/Turabian Style

Jonathan Suazo-Hernández; Pamela Sepúlveda; Karen Manquián-Cerda; Rodrigo Ramírez-Tagle; María Angélica Rubio; Nanthi Bolan; Binoy Sarkar; Nicolás Arancibia-Miranda. 2019. "Synthesis and characterization of zeolite-based composites functionalized with nanoscale zero-valent iron for removing arsenic in the presence of selenium from water." Journal of Hazardous Materials 373, no. : 810-819.