Efficient adsorption of highly-concentrated Cr(VI) from aqueous solutions using tea residue-derived humic acid
The efficient capture and removal of toxic metals, for instance, Chromium (Cr(VI)) from aqueous environments is a critical issue, in environmental science and engineering. Developing cost-effective, eco-friendly and pH-adaptive adsorbent is essential for addressing this challenge. In this study, tea...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-04-01
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| Series: | Desalination and Water Treatment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1944398625002437 |
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| author | Minghai Ma Jiawei You Ran Chen Huiling Shen Mengyi Hu Tong Xue |
| author_facet | Minghai Ma Jiawei You Ran Chen Huiling Shen Mengyi Hu Tong Xue |
| author_sort | Minghai Ma |
| collection | DOAJ |
| description | The efficient capture and removal of toxic metals, for instance, Chromium (Cr(VI)) from aqueous environments is a critical issue, in environmental science and engineering. Developing cost-effective, eco-friendly and pH-adaptive adsorbent is essential for addressing this challenge. In this study, tea residue-based humic acid (T-HA) adsorbent was feasibly prepared via an alkali-soluble acid precipitation method for the optimal elimination of Cr(VI) from aqueous solutions. Results indicate that T-HA can be extracted from tea residues while the study of tea residue as an emerging biomass feedstock remains in the exploratory stage, yielding 1.47 % through the proposed method. The highest adsorption capacity of T-HA for Cr(VI) was recorded as 27.32 mg/g, significantly 53.92 % higher than that of untreated tea residue. The adsorption behavior adhered to pseudo-second-order kinetics (R2=0.999) and was consistent with the Freundlich isotherm model (R2=0.987), suggesting that chemical adsorption was the dominant mechanism. This study highlights the potential of T-HA for the valorization of tea residues and the purification of heavy metal-contaminated wastewater, contributing to sustainable resource utilization and environmental remediation. |
| format | Article |
| id | doaj-art-1ac445f477c24b728c5e4c44ae2cb7b8 |
| institution | OA Journals |
| issn | 1944-3986 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Desalination and Water Treatment |
| spelling | doaj-art-1ac445f477c24b728c5e4c44ae2cb7b82025-08-20T02:02:51ZengElsevierDesalination and Water Treatment1944-39862025-04-0132210122710.1016/j.dwt.2025.101227Efficient adsorption of highly-concentrated Cr(VI) from aqueous solutions using tea residue-derived humic acidMinghai Ma0Jiawei You1Ran Chen2Huiling Shen3Mengyi Hu4Tong Xue5Corresponding author.; College of Life and Environmental science, Huangshan University, Huangshan 245041, ChinaCollege of Life and Environmental science, Huangshan University, Huangshan 245041, ChinaCollege of Life and Environmental science, Huangshan University, Huangshan 245041, ChinaCollege of Life and Environmental science, Huangshan University, Huangshan 245041, ChinaCollege of Life and Environmental science, Huangshan University, Huangshan 245041, ChinaCollege of Life and Environmental science, Huangshan University, Huangshan 245041, ChinaThe efficient capture and removal of toxic metals, for instance, Chromium (Cr(VI)) from aqueous environments is a critical issue, in environmental science and engineering. Developing cost-effective, eco-friendly and pH-adaptive adsorbent is essential for addressing this challenge. In this study, tea residue-based humic acid (T-HA) adsorbent was feasibly prepared via an alkali-soluble acid precipitation method for the optimal elimination of Cr(VI) from aqueous solutions. Results indicate that T-HA can be extracted from tea residues while the study of tea residue as an emerging biomass feedstock remains in the exploratory stage, yielding 1.47 % through the proposed method. The highest adsorption capacity of T-HA for Cr(VI) was recorded as 27.32 mg/g, significantly 53.92 % higher than that of untreated tea residue. The adsorption behavior adhered to pseudo-second-order kinetics (R2=0.999) and was consistent with the Freundlich isotherm model (R2=0.987), suggesting that chemical adsorption was the dominant mechanism. This study highlights the potential of T-HA for the valorization of tea residues and the purification of heavy metal-contaminated wastewater, contributing to sustainable resource utilization and environmental remediation.http://www.sciencedirect.com/science/article/pii/S1944398625002437Tea residueHumic acidAdsorptionCr(VI) removalAdsorption kinetics |
| spellingShingle | Minghai Ma Jiawei You Ran Chen Huiling Shen Mengyi Hu Tong Xue Efficient adsorption of highly-concentrated Cr(VI) from aqueous solutions using tea residue-derived humic acid Desalination and Water Treatment Tea residue Humic acid Adsorption Cr(VI) removal Adsorption kinetics |
| title | Efficient adsorption of highly-concentrated Cr(VI) from aqueous solutions using tea residue-derived humic acid |
| title_full | Efficient adsorption of highly-concentrated Cr(VI) from aqueous solutions using tea residue-derived humic acid |
| title_fullStr | Efficient adsorption of highly-concentrated Cr(VI) from aqueous solutions using tea residue-derived humic acid |
| title_full_unstemmed | Efficient adsorption of highly-concentrated Cr(VI) from aqueous solutions using tea residue-derived humic acid |
| title_short | Efficient adsorption of highly-concentrated Cr(VI) from aqueous solutions using tea residue-derived humic acid |
| title_sort | efficient adsorption of highly concentrated cr vi from aqueous solutions using tea residue derived humic acid |
| topic | Tea residue Humic acid Adsorption Cr(VI) removal Adsorption kinetics |
| url | http://www.sciencedirect.com/science/article/pii/S1944398625002437 |
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