Recovery TiO2 and sodium titanate nanowires as Cd(II) adsorbent from waste V2O5-WO3/TiO2 selective catalytic reduction catalysts by Na2CO3-NaCl-KCl molten salt roasting method
Article
Article Title | Recovery TiO2 and sodium titanate nanowires as Cd(II) adsorbent from waste V2O5-WO3/TiO2 selective catalytic reduction catalysts by Na2CO3-NaCl-KCl molten salt roasting method |
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ERA Journal ID | 3908 |
Article Category | Article |
Authors | Song, Chengsheng (Author), Zhou, Dali (Author), Yang, Lei (Author), Zhou, Jiabei (Author), Liu, Can (Author) and Chen, Zhi-Gang (Author) |
Journal Title | Journal of the Taiwan Institute of Chemical Engineers |
Journal Citation | 88, pp. 226-233 |
Number of Pages | 8 |
Year | 2018 |
Place of Publication | Netherlands |
ISSN | 0368-1653 |
1876-1070 | |
1876-1089 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jtice.2018.04.006 |
Abstract | In this study, Cd(II) adsorbent has been recovered from waste and toxic WO3-V2O5/TiO2 Selective Catalytic Reduction (SCR) catalysts via a creative Na2CO3-NaCl-KCl (NNK) molten salt roasting method (MSM) followed by a leaching process to remove the toxic and valuable W and V. Such facile process enables a faster roasting reaction at a lower temperature compared to conventional roasting methods, achieving an optimized W and V leaching rate of 99.3% and 98.4%. The produced Cd(II) adsorbent mainly consists of TiO2 and sodium titanate nanowires (TiO2/STNWs) with a maximum Cd(II) adsorption capacity is 146.5 mg/g when the pH value is 6. The Fourier Transform Infrared Spectroscopy (FTIR) and X-ray Photoelectron Spectroscopy (XPS) analysis show that the adsorption of Cd(II) by our products can be ascribed to the Cd(II) ion exchange with Na ions and the hydroxyl groups. This study proposes a sustainable and economic approach for producing large scale and high-quality Cd(II) adsorbent via disposing waste SCR catalysts, which shows a great potential in the industrial applications. |
Keywords | nanotubes; waste SCR catalysts; Cd(II) adsorption; TiO2/STNWs; Na2CO3 -NaCl-KCl; molten salt roasting method |
ANZSRC Field of Research 2020 | 401605. Functional materials |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Sichuan University, China |
Centre for Future Materials | |
Institution of Origin | University of Southern Queensland |
Funding source | Australian Research Council (ARC) |
https://research.usq.edu.au/item/q5275/recovery-tio2-and-sodium-titanate-nanowires-as-cd-ii-adsorbent-from-waste-v2o5-wo3-tio2-selective-catalytic-reduction-catalysts-by-na2co3-nacl-kcl-molten-salt-roasting-method
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