Preparation of Polyacrylonitrile/Iron Oxide Nanofiber Adsorbent Modified with 2-Amino-3-Methyl-1-Hexanethiol for the Adsorption of Th4+ Ion

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Rouhi Broujeni b.; NILCHI A.; HASSANI A.H.; SABERI R.

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Journal: WATER AND WASTEWATER Year:2019 | Volume:30 | Issue:4 (122) Page(s): 78-93

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Title

Preparation of Polyacrylonitrile/Iron Oxide Nanofiber Adsorbent Modified with 2-Amino-3-Methyl-1-Hexanethiol for the Adsorption of Th4+ Ion

Author(s)

Rouhi Broujeni b. | NILCHI A. | HASSANI A.H. | SABERI R. | Issue Writer Certificate

Keywords

AdsorptionQ2

Th4++Q1

2Q1

AminoQ1

3Q1

methylQ1

1Q1

hexanethiolQ1

PAN/FeQ1

ONPs NanofiberQ1

HydrothermalQ1

ElectrospinningQ1

Abstract

In this study, novel polyacrylonitrile/iron nano oxide (PAN/Fe-ONPs) nanofiber adsorbent modified with 2-Amino-3-methyl-1-hexanethiol (AMH) was synthesized by combination of Hydrothermal and Electrospinning method and evaluated as an adsorbent for removing thorium (IV) (Th4++) ion from aqueous solution. The PAN/Fe-ONPs/AMH was characterized by X-ray diffraction (XRD), Fourier Transform Infra-Red (FT-IR), Scanning Electron Microscopy (SEM), energy dispersive X-ray analysis (EDX) and Brunauer– Emmett– Teller (BET). Response Surface Methodology (RSM) was utilized in the optimization of Th4++ Adsorption for parameters such as pH, the initial metal ion concentration (Th4++ concentration) and contact time. For this purpose, the central composite design (CCD) with a predictive quadratic model was applied with 8 cubic points, 6 pivot points and 6 replicates at the center. The statistical measures (i. e., Analysis of variance (ANOVA), R2, the lack of fit test and the P value) specify that the developed model is proper. The results of optimization showed that the Adsorption percentage of PAN/Fe-ONPs/AMH for Th4++ under optimal conditions (pH=5. 7, initial concentration 232 mgL-1 and contact time=67. 8 min) was 98% at 25oC. In addition, the Adsorption kinetics was well defined by the pseudo second-order equation, while the Langmuir model better fit the Adsorption isotherms. The Adsorption capacity of PAN/Fe-ONPs/AMH was 472 mg Th4++g-1 composite. The loaded Th4++ can be easily regenerated with HNO3/HCl and the PAN/Fe-ONPs/AMH could be used repeatedly without any significant reduction in its Adsorption capacity. Adsorbent recovery by using 0. 4M HNO3/0. 2M HCl solution for adsorbent reuse indicated that the PAN/Fe-ONPs/AMH Adsorption capacity for Th4++ was decreased by about 7. 5%.

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APA: Copy

Rouhi Broujeni, b., NILCHI, A., HASSANI, A.H., & SABERI, R.. (2019). Preparation of Polyacrylonitrile/Iron Oxide Nanofiber Adsorbent Modified with 2-Amino-3-Methyl-1-Hexanethiol for the Adsorption of Th4+ Ion. WATER AND WASTEWATER, 30(4 (122) ), 78-93. SID. https://sid.ir/paper/103701/en

Vancouver: Copy

Rouhi Broujeni b., NILCHI A., HASSANI A.H., SABERI R.. Preparation of Polyacrylonitrile/Iron Oxide Nanofiber Adsorbent Modified with 2-Amino-3-Methyl-1-Hexanethiol for the Adsorption of Th4+ Ion. WATER AND WASTEWATER[Internet]. 2019;30(4 (122) ):78-93. Available from: https://sid.ir/paper/103701/en

IEEE: Copy

b. Rouhi Broujeni, A. NILCHI, A.H. HASSANI, and R. SABERI, “Preparation of Polyacrylonitrile/Iron Oxide Nanofiber Adsorbent Modified with 2-Amino-3-Methyl-1-Hexanethiol for the Adsorption of Th4+ Ion,” WATER AND WASTEWATER, vol. 30, no. 4 (122) , pp. 78–93, 2019, [Online]. Available: https://sid.ir/paper/103701/en

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