High Removal Efficiency of Diatomite-Based X Zeolite for Cu<sup>2+</sup> and Zn<sup>2+</sup>
Diatomite-based X zeolite was obtained and its crystallinity, morphology, and interface properties were investigated by XRD, BET, SEM, EDS, and XRF. The obtained X zeolite possessed a unique meso-microporous structure and showed good ion exchange properties for Cu<sup>2+</sup> and Zn<...
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2021
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oai:doaj.org-article:7f9cd7d864d3447c9e5798fb20f3d59a2021-11-11T18:05:48ZHigh Removal Efficiency of Diatomite-Based X Zeolite for Cu<sup>2+</sup> and Zn<sup>2+</sup>10.3390/ma142165251996-1944https://doaj.org/article/7f9cd7d864d3447c9e5798fb20f3d59a2021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6525https://doaj.org/toc/1996-1944Diatomite-based X zeolite was obtained and its crystallinity, morphology, and interface properties were investigated by XRD, BET, SEM, EDS, and XRF. The obtained X zeolite possessed a unique meso-microporous structure and showed good ion exchange properties for Cu<sup>2+</sup> and Zn<sup>2+</sup>. The pseudo-second-order model and Langmuir isotherm model can best describe the adsorption kinetics and isotherms of Cu<sup>2+</sup> and Zn<sup>2+</sup>, respectively. The maximal adsorption capacities of X zeolite for Cu<sup>2+</sup> and Zn<sup>2+</sup> were 146 and 195 mg/g at 323 K, respectively. Meanwhile, the adsorption process for Cu<sup>2+</sup> and Zn<sup>2+</sup> were chemical adsorption and ion exchange, respectively. Furthermore, the adsorption data turned out to be an endothermic and spontaneous process. Compared with other reported materials, the adsorption capacity of X zeolite synthesized from diatomite was among the highest. Therefore, it could be a promising adsorbent for the disposal of wastewater that contains metal ions.Guangyuan YaoYuqiang LiuShuilin ZhengYa XuMDPI AGarticleX zeoliteCu<sup>2+</sup> and Zn<sup>2+</sup>adsorption thermodynamicadsorption kineticsTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6525, p 6525 (2021) |
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DOAJ |
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DOAJ |
| language |
EN |
| topic |
X zeolite Cu<sup>2+</sup> and Zn<sup>2+</sup> adsorption thermodynamic adsorption kinetics Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 |
| spellingShingle |
X zeolite Cu<sup>2+</sup> and Zn<sup>2+</sup> adsorption thermodynamic adsorption kinetics Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Guangyuan Yao Yuqiang Liu Shuilin Zheng Ya Xu High Removal Efficiency of Diatomite-Based X Zeolite for Cu<sup>2+</sup> and Zn<sup>2+</sup> |
| description |
Diatomite-based X zeolite was obtained and its crystallinity, morphology, and interface properties were investigated by XRD, BET, SEM, EDS, and XRF. The obtained X zeolite possessed a unique meso-microporous structure and showed good ion exchange properties for Cu<sup>2+</sup> and Zn<sup>2+</sup>. The pseudo-second-order model and Langmuir isotherm model can best describe the adsorption kinetics and isotherms of Cu<sup>2+</sup> and Zn<sup>2+</sup>, respectively. The maximal adsorption capacities of X zeolite for Cu<sup>2+</sup> and Zn<sup>2+</sup> were 146 and 195 mg/g at 323 K, respectively. Meanwhile, the adsorption process for Cu<sup>2+</sup> and Zn<sup>2+</sup> were chemical adsorption and ion exchange, respectively. Furthermore, the adsorption data turned out to be an endothermic and spontaneous process. Compared with other reported materials, the adsorption capacity of X zeolite synthesized from diatomite was among the highest. Therefore, it could be a promising adsorbent for the disposal of wastewater that contains metal ions. |
| format |
article |
| author |
Guangyuan Yao Yuqiang Liu Shuilin Zheng Ya Xu |
| author_facet |
Guangyuan Yao Yuqiang Liu Shuilin Zheng Ya Xu |
| author_sort |
Guangyuan Yao |
| title |
High Removal Efficiency of Diatomite-Based X Zeolite for Cu<sup>2+</sup> and Zn<sup>2+</sup> |
| title_short |
High Removal Efficiency of Diatomite-Based X Zeolite for Cu<sup>2+</sup> and Zn<sup>2+</sup> |
| title_full |
High Removal Efficiency of Diatomite-Based X Zeolite for Cu<sup>2+</sup> and Zn<sup>2+</sup> |
| title_fullStr |
High Removal Efficiency of Diatomite-Based X Zeolite for Cu<sup>2+</sup> and Zn<sup>2+</sup> |
| title_full_unstemmed |
High Removal Efficiency of Diatomite-Based X Zeolite for Cu<sup>2+</sup> and Zn<sup>2+</sup> |
| title_sort |
high removal efficiency of diatomite-based x zeolite for cu<sup>2+</sup> and zn<sup>2+</sup> |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/7f9cd7d864d3447c9e5798fb20f3d59a |
| work_keys_str_mv |
AT guangyuanyao highremovalefficiencyofdiatomitebasedxzeoliteforcusup2supandznsup2sup AT yuqiangliu highremovalefficiencyofdiatomitebasedxzeoliteforcusup2supandznsup2sup AT shuilinzheng highremovalefficiencyofdiatomitebasedxzeoliteforcusup2supandznsup2sup AT yaxu highremovalefficiencyofdiatomitebasedxzeoliteforcusup2supandznsup2sup |
| _version_ |
1718431953562107904 |