The role of organic and inorganic substituents of roxarsone determines its binding behavior and mechanisms onto nano-ferrihydrite colloidal particles

Lei, Ming; Huang, Ya-Yuan; Zhou, Yimin; Mensah, Caleb Oppong; Li, Bingyu

doi:10.1016/j.jes.2022.09.035

Cited by 19 publications

(3 citation statements)

References 65 publications

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“…To further describe the diffusion of p -ASA and ROX within MIL-101@CAGE, the data were analyzed using an intraparticle diffusion model (eq 4). As shown in Figure , the adsorption process was divided into three linear regions: a rapidly increasing region, a gently increasing region, and a stable region, corresponding to the intraparticle diffusion model rate constants, k q1 > k q2 > k q3 (Table ), which tended to decrease throughout the adsorption process. , (1) The first stage is the boundary layer diffusion, in which p -ASA and ROX diffuse freely from solution to the MIL-101@CAGE surface, rapidly occupying most of the active sites on the MIL-101@CAGE surface, and the adsorption capacity increases rapidly. (2) The second stage is the internal mass transfer or pore diffusion, indicating that p -ASA and ROX diffuse into the less accessible adsorption sites.…”

Section: Resultsmentioning

confidence: 99%

“…As shown in Figure 4, the adsorption process was divided into three linear regions: a rapidly increasing region, a gently 1), which tended to decrease throughout the adsorption process. 64,65 (1) The first stage is the boundary layer diffusion, in which p-ASA and ROX diffuse freely from solution to the MIL-101@CAGE surface, rapidly occupying most of the active sites on the MIL-101@CAGE surface, and the adsorption capacity increases rapidly.…”

Section: Adsorption Kinetic Studymentioning

confidence: 99%

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3D-Printed MOFs/Polymer Composite as a Separatable Adsorbent for the Removal of Phenylarsenic Acid in the Aqueous Solution

Ding,

Xu,

et al. 2023

ACS Appl. Mater. Interfaces

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Metal–organic frameworks (MOFs) are emerging as advanced nanoporous materials to remove phenylarsenic acid, p-arsanilic acid (p-ASA), and roxarsone (ROX) in the aqueous solution, while MOFs are often present as powder state and encounter difficulties in recovery after adsorption, which greatly limit their practical application in the aqueous environments. Herein, MIL-101 (Fe), a typical MOF, was mixed with sodium alginate and gelatin to prepare MIL-101@CAGE by three-dimensional (3D) printing technology, which was then used as a separatable adsorbent to remove phenylarsenic acid in the aqueous solution. The structure of 3D-printed MIL-101@CAGE was first characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR), and thermogravimetry and differential thermogravimetry (TG-DTG). The octahedral morphology of MIL-101 (Fe) was found unchanged during the 3D printing process. Then, the adsorption process of MIL-101@CAGE on phenylarsenic acids was systematically investigated by adsorption kinetics, adsorption isotherms, adsorption thermodynamics, condition experiments, and cyclic regeneration experiments. Finally, the adsorption mechanism between MIL-101@CAGE and phenylarsenic acid was further investigated. The results showed that the Langmuir, Freundlich, and Temkin isotherms were well fit, and according to the Langmuir fitting results, the maximum adsorption amounts of MIL-101@CAGE on p-ASA and ROX at 25 °C were 106.98 and 120.28 mg/g, respectively. The removal of p-ASA and ROX by MIL-101@CAGE remained stable over a wide pH range and in the presence of various coexisting ions. The regeneration experiments showed that the 3D-printed MIL-101@CAGE could still maintain a more than 90% removal rate after five cycles. The adsorption mechanism of this system might include π–π stacking interactions between the benzene ring on the phenylarsenic acids and the organic ligands in MIL-101@CAGE, hydrogen-bonding, and ligand-bonding interactions (Fe–O–As). This study provides a new idea for the scale preparation of a separatable and recyclable adsorbent based on MOF material for the efficient removal of phenylarsenic acid in the aqueous solution.

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Section: Resultsmentioning

confidence: 99%

Section: Adsorption Kinetic Studymentioning

confidence: 99%

3D-Printed MOFs/Polymer Composite as a Separatable Adsorbent for the Removal of Phenylarsenic Acid in the Aqueous Solution

Ding,

Xu,

et al. 2023

ACS Appl. Mater. Interfaces

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“…ATR‐FTIR absorption spectra can identify and characterize subtle changes in the functional groups of organic pollutants as they interact with the surface of the active component through coordination or hydrogen bonding. Lei et al (2022) observed the adsorption of FH at pH 5.5 and Roxarsone concentration of 100 mg/L in the range of 0–420 min, ATR‐FTIR vibrational spectrum of Roxarsone with time and obtained a clear absorption band of Roxarsone in the range of 700–880 cm −1 , which indicates the formation of inner‐sphere surface complexes on FH through the ‐AsO 3 H 2 group. One of the absorption bands centered at 837 cm −1 belongs to the hydrogen bonding complex, indicating the involvement of the ‐AsO 3 H 2 group in the hydrogen bonding on the FH surface.…”

Section: Application Of Ir Spectroscopy To Organic Arsenic Acid Adsor...mentioning

confidence: 99%

Application of infrared spectroscopy and its theoretical simulation to arsenic adsorption processes

Ablat

Nurmamat

et al. 2023

Water Environment Research

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Accurate detection and analysis of arsenic pollutants are an important means to enhance the ability to manage arsenic pollution. Infrared (IR) spectroscopy technology has the advantages of fast analysis speed, high resolution, and high sensitivity and can be monitored by real‐time in situ analysis. This paper reviews the application of IR spectroscopy in the qualitative and quantitative analysis of inorganic and organic arsenic acid adsorbed by major minerals such as ferrihydrite (FH), hematite, goethite, and titanium dioxide. The IR spectroscopy technique cannot only identify different arsenic contaminants but also obtain the content and adsorption rate of arsenic contaminants in the solid phase. The reaction equilibrium constants and the degree of reaction conversion can be determined by constructing adsorption isotherms or combining them with modeling techniques. Theoretical calculations of IR spectra of mineral adsorbed arsenic pollutant systems based on density functional theory (DFT) and analysis and comparison of the measured and theoretically calculated characteristic peaks of IR spectra can reveal the microscopic mechanism and surface chemical morphology of the arsenic adsorption process. This paper systematically summarizes the qualitative and quantitative studies and theoretical calculations of IR spectroscopy in inorganic and organic arsenic pollutant adsorption systems, which provides new insights for accurate detection and analysis of arsenic pollutants and arsenic pollution control. Practitioner Points This paper reviews the application of infrared spectroscopy in the qualitative and quantitative analyses of inorganic and organic arsenic acid adsorbed by major minerals such as ferrihydrite, hematite, goethite, and titanium dioxide, which can help identify and evaluate the type and concentration of arsenic pollutants in water bodies. In this paper, theoretical calculations of infrared spectra of mineral adsorbed arsenic pollutant systems based on density functional theory reveal the adsorption mechanism of arsenic pollutants in water at the solid–liquid interface and help to develop targeted arsenic pollution control technologies. This paper provides a new and reliable analytical detection technique for the study of arsenic contaminants in water bodies.

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Insights into the enhanced adsorption of glyphosate by dissolved organic matter in farmland Mollisol: effects and mechanisms of action

Jiao,

Jia,

et al. 2024

Environ Geochem Health

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The role of organic and inorganic substituents of roxarsone determines its binding behavior and mechanisms onto nano-ferrihydrite colloidal particles

Cited by 19 publications

References 65 publications

3D-Printed MOFs/Polymer Composite as a Separatable Adsorbent for the Removal of Phenylarsenic Acid in the Aqueous Solution

3D-Printed MOFs/Polymer Composite as a Separatable Adsorbent for the Removal of Phenylarsenic Acid in the Aqueous Solution

Application of infrared spectroscopy and its theoretical simulation to arsenic adsorption processes

Insights into the enhanced adsorption of glyphosate by dissolved organic matter in farmland Mollisol: effects and mechanisms of action

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