Efficient Iodine Removal by Porous Biochar-Confined Nano-Cu<sub>2</sub>O/Cu<sup>0</sup>: Rapid and Selective Adsorption of Iodide and Iodate Ions
Iodine is a nuclide of crucial concern in radioactive waste management. Nanomaterials selectively adsorb iodine from water; however, the efficient application of nanomaterials in engineering still needs to be developed for radioactive wastewater deiodination. <i>Artemia</i> egg shells po...
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MDPI AG
2023-01-01
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| Series: | Nanomaterials |
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| author | Jiaqi Li Mengzhou Wang Xu Zhao Zitong Li Yihui Niu Sufeng Wang Qina Sun |
| author_facet | Jiaqi Li Mengzhou Wang Xu Zhao Zitong Li Yihui Niu Sufeng Wang Qina Sun |
| author_sort | Jiaqi Li |
| collection | DOAJ |
| description | Iodine is a nuclide of crucial concern in radioactive waste management. Nanomaterials selectively adsorb iodine from water; however, the efficient application of nanomaterials in engineering still needs to be developed for radioactive wastewater deiodination. <i>Artemia</i> egg shells possess large surface groups and connecting pores, providing a new biomaterial to remove contaminants. Based on the <i>Artemia</i> egg shell-derived biochar (AES biochar) and in situ precipitation and reduction of cuprous, we synthesized a novel nanocomposite, namely porous biochar-confined nano-Cu<sub>2</sub>O/Cu<sup>0</sup> (C-Cu). The characterization of C-Cu confirmed that the nano-Cu<sub>2</sub>O/Cu<sup>0</sup> was dispersed in the pores of AES biochar, serving in the efficient and selective adsorption of iodide and iodate ions from water. The iodide ion removal by C-Cu when equilibrated for 40 min exhibited high removal efficiency over the wide pH range of 4 to 10. Remarkable selectivity towards both iodide and iodate ions of C-Cu was permitted against competing anions (Cl<sup>−</sup>/NO<sub>3</sub><sup>−</sup>/SO<sub>4</sub><sup>2−</sup>) at high concentrations. The applicability of C-Cu was demonstrated by a packed column test with treated effluents of 1279 BV. The rapid and selective removal of iodide and iodate ions from water is attributed to nanoparticles confined on the AES biochar and pore-facilitated mass transfer. Combining the advantages of the porous biochar and nano-Cu<sub>2</sub>O/Cu<sup>0</sup>, the use of C-Cu offers a promising method of iodine removal from water in engineering applications. |
| first_indexed | 2024-03-11T09:31:08Z |
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| language | English |
| last_indexed | 2024-03-11T09:31:08Z |
| publishDate | 2023-01-01 |
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| series | Nanomaterials |
| spelling | doaj.art-2c9685d1d9954406b0dc5a61984069602023-11-16T17:36:47ZengMDPI AGNanomaterials2079-49912023-01-0113357610.3390/nano13030576Efficient Iodine Removal by Porous Biochar-Confined Nano-Cu<sub>2</sub>O/Cu<sup>0</sup>: Rapid and Selective Adsorption of Iodide and Iodate IonsJiaqi Li0Mengzhou Wang1Xu Zhao2Zitong Li3Yihui Niu4Sufeng Wang5Qina Sun6Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, ChinaHebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, ChinaHebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, ChinaHebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, ChinaHebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, ChinaHebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, ChinaHebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, ChinaIodine is a nuclide of crucial concern in radioactive waste management. Nanomaterials selectively adsorb iodine from water; however, the efficient application of nanomaterials in engineering still needs to be developed for radioactive wastewater deiodination. <i>Artemia</i> egg shells possess large surface groups and connecting pores, providing a new biomaterial to remove contaminants. Based on the <i>Artemia</i> egg shell-derived biochar (AES biochar) and in situ precipitation and reduction of cuprous, we synthesized a novel nanocomposite, namely porous biochar-confined nano-Cu<sub>2</sub>O/Cu<sup>0</sup> (C-Cu). The characterization of C-Cu confirmed that the nano-Cu<sub>2</sub>O/Cu<sup>0</sup> was dispersed in the pores of AES biochar, serving in the efficient and selective adsorption of iodide and iodate ions from water. The iodide ion removal by C-Cu when equilibrated for 40 min exhibited high removal efficiency over the wide pH range of 4 to 10. Remarkable selectivity towards both iodide and iodate ions of C-Cu was permitted against competing anions (Cl<sup>−</sup>/NO<sub>3</sub><sup>−</sup>/SO<sub>4</sub><sup>2−</sup>) at high concentrations. The applicability of C-Cu was demonstrated by a packed column test with treated effluents of 1279 BV. The rapid and selective removal of iodide and iodate ions from water is attributed to nanoparticles confined on the AES biochar and pore-facilitated mass transfer. Combining the advantages of the porous biochar and nano-Cu<sub>2</sub>O/Cu<sup>0</sup>, the use of C-Cu offers a promising method of iodine removal from water in engineering applications.https://www.mdpi.com/2079-4991/13/3/576nanoparticlescuprousbiochar<i>Artemia</i>iodide ioniodate ion |
| spellingShingle | Jiaqi Li Mengzhou Wang Xu Zhao Zitong Li Yihui Niu Sufeng Wang Qina Sun Efficient Iodine Removal by Porous Biochar-Confined Nano-Cu<sub>2</sub>O/Cu<sup>0</sup>: Rapid and Selective Adsorption of Iodide and Iodate Ions Nanomaterials nanoparticles cuprous biochar <i>Artemia</i> iodide ion iodate ion |
| title | Efficient Iodine Removal by Porous Biochar-Confined Nano-Cu<sub>2</sub>O/Cu<sup>0</sup>: Rapid and Selective Adsorption of Iodide and Iodate Ions |
| title_full | Efficient Iodine Removal by Porous Biochar-Confined Nano-Cu<sub>2</sub>O/Cu<sup>0</sup>: Rapid and Selective Adsorption of Iodide and Iodate Ions |
| title_fullStr | Efficient Iodine Removal by Porous Biochar-Confined Nano-Cu<sub>2</sub>O/Cu<sup>0</sup>: Rapid and Selective Adsorption of Iodide and Iodate Ions |
| title_full_unstemmed | Efficient Iodine Removal by Porous Biochar-Confined Nano-Cu<sub>2</sub>O/Cu<sup>0</sup>: Rapid and Selective Adsorption of Iodide and Iodate Ions |
| title_short | Efficient Iodine Removal by Porous Biochar-Confined Nano-Cu<sub>2</sub>O/Cu<sup>0</sup>: Rapid and Selective Adsorption of Iodide and Iodate Ions |
| title_sort | efficient iodine removal by porous biochar confined nano cu sub 2 sub o cu sup 0 sup rapid and selective adsorption of iodide and iodate ions |
| topic | nanoparticles cuprous biochar <i>Artemia</i> iodide ion iodate ion |
| url | https://www.mdpi.com/2079-4991/13/3/576 |
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