Monoethanolamine adsorption on oxide surfaces

Rose, Amber N.; Hettiarachchi, Eshani; Grassian, Vicki H.

doi:10.1016/j.jcis.2022.01.059

Cited by 5 publications

(1 citation statement)

References 35 publications

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“…The adsorption amount of SeMet on goethite, hematite, and ferrihydrite linearly increased with the increasing equilibrium concentration ( C e ) of SeMet in the initial concentration ( C 0 ) range of 0–200 mg/L. This phenomenon was different from the adsorption of most other species on iron oxides. ,− That is to say, the saturated adsorption of SeMet on goethite, hematite, and ferrihydrite would occur when the C 0 of SeMet is higher than 200 mg/L. Considering that the concentration of organic Se species in soils is generally much lower than 200 mg/L, we did not conduct the adsorption of SeMet at a higher C 0 .…”

Section: Resultsmentioning

confidence: 98%

Migration of l-Selenomethionine in the Water–Soil Interface Dominated by Iron Oxides

Wang,

Liu,

et al. 2024

Langmuir

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Organic selenium (Se) accounts for up to 10−80% of total Se in soils, and L-selenomethionine (SeMet) is a typical organic Se species. However, the migration of SeMet in soils remains elusive. This study investigated the solid− liquid distribution, adsorption, desorption by phosphate, and self-oxidization of SeMet in solution under the influence of ferrihydrite, goethite, and hematite through batch experiments. Iron oxides could adsorb a much larger amount of SeMet than inorganic Se. At the initial Se element concentrations of 0−200 mg/L, the solid/liquid partition coefficient of SeMet was constant, which was 0.41, 0.43, and 0.50 on ferrihydrite, goethite, and hematite, respectively. In addition, the adsorption process of SeMet on the three iron oxides could be well described by the linear driving force model. Accordingly, the intraparticle diffusion coefficient of SeMet in ferrihydrite, goethite, and hematite was 1.4 × 10 3 , 7.9 × 10 4 , and 1.2 × 10 5 nm 2 /min, respectively. The adsorption of SeMet on the three iron oxides was slightly influenced by the pH and the coexisting ions, such as Cl − , NO 3 − , SO 4 2−, and H 2 PO 4 − . The desorption ratio of SeMet on the three iron oxides by phosphate was lower than 2.5%. SeMet would aggregate the nanoparticles of iron oxides, resulting in a synergistic effect on the adsorption of phosphate. The oxidization ratio of SeMet was 23.9% in the solution, while it decreased to 17.1−17.5% in iron oxide suspensions. For this oxidization process, the three iron oxides exhibited varying effects to decelerate SeMet oxidation, as represented by the equivalent reaction. The findings of this study reveal the migration of SeMet in the water−soil interface under the influence of iron oxides, which can improve the understanding of Se cycling in the environment as well as provide some guidance for the better utilization of Se in soils and environmental remediation of Se pollution.

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Section: Resultsmentioning

confidence: 98%

Migration of l-Selenomethionine in the Water–Soil Interface Dominated by Iron Oxides

Wang,

Liu,

et al. 2024

Langmuir

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Adsorption mechanism and electrochemical properties of disperse blue 2BLN onto magnetic Cu_0.₂Zn₀_.₃Co₀_.₅Fe₂O₄ nanoparticles prepared via the rapid combustion process

Zhou,

Lv,

Wang

et al. 2024

Env Prog and Sustain Energy

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Magnetic Cu0.2Zn0.3Co0.5Fe2O4 nanoparticles were prepared by the rapid combustion method and characterized by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), x‐ray diffraction (XRD), and vibrating sample magnetometer (VSM). The average particle size and the saturation magnetization of the nanoparticles prepared at 400°C with 25 mL absolute alcohol were about 60.9 nm and 50 emu/g. The results of the experiment displayed that the adsorption process agreed with the pseudo‐second‐order kinetics model (R2 > 0.98) and Langmuir isotherm model (R2 = 0.9982), indicating that the adsorption of DB‐2BLN onto magnetic Cu0.2Zn0.3Co0.5Fe2O4 nanoparticles was monolayer chemisorption. ΔH (ΔH = −28.0135 kJ/mol) of the thermodynamic experiment was less than 0, indicating that the adsorption was an exothermic process. The effects of pH, initial concentration of dye, ionic strength, temperature, and adsorbent dosage on the adsorption process of DB‐2BLN onto magnetic Cu0.2Zn0.3Co0.5Fe2O4 nanoparticles and the regeneration performance of the nanoparticles were investigated. When the pH was determined to be 2 and the adsorbent dosage was 5 mg, the adsorption capacity reached the maximum. After 7 cycles, the removal rate of DB‐2BLN still reached 92.6% of that for the first adsorption, showing excellent regeneration performance. Finally, the electrochemical properties of the magnetic Cu0.2Zn0.3Co0.5Fe2O4 nanoparticles were investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS).

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Interfacial competing interaction eliminates voids in the buried interface for efficient and stable perovskite solar modules on bare NiOX

Li,

Wang,

Fang

et al. 2024

Chemical Engineering Journal

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Monoethanolamine adsorption on oxide surfaces

Cited by 5 publications

References 35 publications

Migration of l-Selenomethionine in the Water–Soil Interface Dominated by Iron Oxides

Migration of l-Selenomethionine in the Water–Soil Interface Dominated by Iron Oxides

Adsorption mechanism and electrochemical properties of disperse blue 2BLN onto magnetic Cu_0.₂Zn₀_.₃Co₀_.₅Fe₂O₄ nanoparticles prepared via the rapid combustion process

Interfacial competing interaction eliminates voids in the buried interface for efficient and stable perovskite solar modules on bare NiOX

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Monoethanolamine adsorption on oxide surfaces

Cited by 5 publications

References 35 publications

Migration of l-Selenomethionine in the Water–Soil Interface Dominated by Iron Oxides

Migration of l-Selenomethionine in the Water–Soil Interface Dominated by Iron Oxides

Adsorption mechanism and electrochemical properties of disperse blue 2BLN onto magnetic Cu0.2Zn0.3Co0.5Fe2O4 nanoparticles prepared via the rapid combustion process

Interfacial competing interaction eliminates voids in the buried interface for efficient and stable perovskite solar modules on bare NiOX

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Adsorption mechanism and electrochemical properties of disperse blue 2BLN onto magnetic Cu_0.₂Zn₀_.₃Co₀_.₅Fe₂O₄ nanoparticles prepared via the rapid combustion process