Study on the Adsorption Properties of Cr(VI) by Biochar with Different Treatments
The paper investigated the adsorption of Cr(VI) on biochar in simulated wastewater by static adsorption method, Fourier Transform Infrared spectra (FTIR), Raman, X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and transmission electron microscope (TEM) characterization an...
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| Format: | Article |
| Language: | English |
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Technoscience Publications
2023-09-01
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| Series: | Nature Environment and Pollution Technology |
| Subjects: | |
| Online Access: | https://neptjournal.com/upload-images/(42)D-1472.pdf |
| _version_ | 1797688665444450304 |
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| author | X. Zhang |
| author_facet | X. Zhang |
| author_sort | X. Zhang |
| collection | DOAJ |
| description | The paper investigated the adsorption of Cr(VI) on biochar in simulated wastewater by static adsorption method, Fourier Transform Infrared spectra (FTIR), Raman, X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and transmission electron microscope (TEM) characterization analysis. The results show that biochar can effectively remove Cr(VI) in wastewater, and the adsorption equilibrium can be quickly reached within 100 min. The kinetic analysis shows that the quasi-second-order kinetic model can better fit the kinetic process of Cr(VI) adsorption by biochar, which shows that the main mechanism of the adsorption is the chemical bonding cooperation between Cr(VI) and the functional groups on the surface of biochar. Fit analysis of the isotherm at different temperatures shows that temperature increase promotes the adsorption of Cr(VI) on biochar, and thermodynamic analysis reveals that the adsorption of Cr(VI) on biochar is a spontaneous endothermic process. The Freundlich model effectively fits the adsorption isotherm of Cr(VI), indicating that the surface of biochar is uneven and Cr(VI) has undergone multilayer adsorption. The adsorption isotherm of Cr(VI) under the influence of HA and FA can be effectively fitted by the Freundlich model, and the adsorption efficiency is the highest when FA is added. The national analysis of Fourier Transform Infrared spectra (FTIR), Raman, X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and transmission electron microscope (TEM) further reveals the bond cooperation between Cr(VI) and the surface functional groups of biochar. The results show that biochar has potential application value in treating chrome-containing wastewater. |
| first_indexed | 2024-03-12T01:34:00Z |
| format | Article |
| id | doaj.art-34e96763f6c34feaa2d8c775c014ef4a |
| institution | Directory Open Access Journal |
| issn | 0972-6268 2395-3454 |
| language | English |
| last_indexed | 2024-03-12T01:34:00Z |
| publishDate | 2023-09-01 |
| publisher | Technoscience Publications |
| record_format | Article |
| series | Nature Environment and Pollution Technology |
| spelling | doaj.art-34e96763f6c34feaa2d8c775c014ef4a2023-09-11T11:11:21ZengTechnoscience PublicationsNature Environment and Pollution Technology0972-62682395-34542023-09-012231563156910.46488/NEPT.2023.v22i03.042Study on the Adsorption Properties of Cr(VI) by Biochar with Different TreatmentsX. ZhangThe paper investigated the adsorption of Cr(VI) on biochar in simulated wastewater by static adsorption method, Fourier Transform Infrared spectra (FTIR), Raman, X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and transmission electron microscope (TEM) characterization analysis. The results show that biochar can effectively remove Cr(VI) in wastewater, and the adsorption equilibrium can be quickly reached within 100 min. The kinetic analysis shows that the quasi-second-order kinetic model can better fit the kinetic process of Cr(VI) adsorption by biochar, which shows that the main mechanism of the adsorption is the chemical bonding cooperation between Cr(VI) and the functional groups on the surface of biochar. Fit analysis of the isotherm at different temperatures shows that temperature increase promotes the adsorption of Cr(VI) on biochar, and thermodynamic analysis reveals that the adsorption of Cr(VI) on biochar is a spontaneous endothermic process. The Freundlich model effectively fits the adsorption isotherm of Cr(VI), indicating that the surface of biochar is uneven and Cr(VI) has undergone multilayer adsorption. The adsorption isotherm of Cr(VI) under the influence of HA and FA can be effectively fitted by the Freundlich model, and the adsorption efficiency is the highest when FA is added. The national analysis of Fourier Transform Infrared spectra (FTIR), Raman, X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and transmission electron microscope (TEM) further reveals the bond cooperation between Cr(VI) and the surface functional groups of biochar. The results show that biochar has potential application value in treating chrome-containing wastewater.https://neptjournal.com/upload-images/(42)D-1472.pdfbiochar, cr(vi), kinetics, thermodynamics, adsorption mechanism |
| spellingShingle | X. Zhang Study on the Adsorption Properties of Cr(VI) by Biochar with Different Treatments Nature Environment and Pollution Technology biochar, cr(vi), kinetics, thermodynamics, adsorption mechanism |
| title | Study on the Adsorption Properties of Cr(VI) by Biochar with Different Treatments |
| title_full | Study on the Adsorption Properties of Cr(VI) by Biochar with Different Treatments |
| title_fullStr | Study on the Adsorption Properties of Cr(VI) by Biochar with Different Treatments |
| title_full_unstemmed | Study on the Adsorption Properties of Cr(VI) by Biochar with Different Treatments |
| title_short | Study on the Adsorption Properties of Cr(VI) by Biochar with Different Treatments |
| title_sort | study on the adsorption properties of cr vi by biochar with different treatments |
| topic | biochar, cr(vi), kinetics, thermodynamics, adsorption mechanism |
| url | https://neptjournal.com/upload-images/(42)D-1472.pdf |
| work_keys_str_mv | AT xzhang studyontheadsorptionpropertiesofcrvibybiocharwithdifferenttreatments |