Adsorption removal of cationic dyes from wastewater using the corn straw modified with diethylenetriaminepentacetic acid ligand
Copyright © 2024 Elsevier B.V. All rights reserved..
Taking the thiazide cationic dye methylene blue (MB), triphenylmethane cationic dye crystal violet (CV), monoazo cationic dye cationic red 46 (R-46), and polycarboxycyanine cationic dye cationic rosé FG (P-FG) as the research objects, the adsorption behaviors of a self-made corn straw modified adsorbent HQ-DTPA-I for the dyes were investigated in depth. Under optimized conditions, HQ-DTPA-I can quickly adsorb most dyes within 3 min and reach equilibrium adsorption in 15-20 min. The removal rates of HQ-DTPA-I to MB, CV, R-46 and AP-FG can reach 95.28 %, 99.78 %, 99.28 % and 98.53 %, respectively. It also has good anti-interference ability for common ions present in most actual dye wastewater. For six consecutive adsorption-desorption cycles, the adsorption performance of HQ-DTPA-I can still reach 80.17 %, 81.61 %, 90.77 % and 83.48 % of the initial adsorption capacity, indicating good recovery performance. Based on Gaussian density functional theory to calculate its surface potential energy, it is found that the adsorption mechanism of HQ-DTPA-I for the cationic dyes is mainly due to the electrostatic interaction between the carboxyl groups in ligand DTPA and amino groups in dye molecules.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:1720 |
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| Enthalten in: |
Journal of chromatography. A - 1720(2024) vom: 12. Apr., Seite 464781 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Hu, Hongbin [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 01.04.2024 Date Revised 01.04.2024 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.chroma.2024.464781 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM369610164 |
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| 520 | |a Taking the thiazide cationic dye methylene blue (MB), triphenylmethane cationic dye crystal violet (CV), monoazo cationic dye cationic red 46 (R-46), and polycarboxycyanine cationic dye cationic rosé FG (P-FG) as the research objects, the adsorption behaviors of a self-made corn straw modified adsorbent HQ-DTPA-I for the dyes were investigated in depth. Under optimized conditions, HQ-DTPA-I can quickly adsorb most dyes within 3 min and reach equilibrium adsorption in 15-20 min. The removal rates of HQ-DTPA-I to MB, CV, R-46 and AP-FG can reach 95.28 %, 99.78 %, 99.28 % and 98.53 %, respectively. It also has good anti-interference ability for common ions present in most actual dye wastewater. For six consecutive adsorption-desorption cycles, the adsorption performance of HQ-DTPA-I can still reach 80.17 %, 81.61 %, 90.77 % and 83.48 % of the initial adsorption capacity, indicating good recovery performance. Based on Gaussian density functional theory to calculate its surface potential energy, it is found that the adsorption mechanism of HQ-DTPA-I for the cationic dyes is mainly due to the electrostatic interaction between the carboxyl groups in ligand DTPA and amino groups in dye molecules | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Adsorption behavior | |
| 650 | 4 | |a Cationic dye | |
| 650 | 4 | |a Corn straw | |
| 650 | 4 | |a Density functional theory | |
| 650 | 4 | |a Diethylenetriaminepentacetic acid | |
| 650 | 7 | |a Wastewater |2 NLM | |
| 650 | 7 | |a Coloring Agents |2 NLM | |
| 650 | 7 | |a Ligands |2 NLM | |
| 650 | 7 | |a Cations |2 NLM | |
| 650 | 7 | |a Methylene Blue |2 NLM | |
| 650 | 7 | |a T42P99266K |2 NLM | |
| 650 | 7 | |a Gentian Violet |2 NLM | |
| 650 | 7 | |a J4Z741D6O5 |2 NLM | |
| 650 | 7 | |a Pentetic Acid |2 NLM | |
| 650 | 7 | |a 7A314HQM0I |2 NLM | |
| 650 | 7 | |a Water Pollutants, Chemical |2 NLM | |
| 700 | 1 | |a Zhao, Lang |e verfasserin |4 aut | |
| 700 | 1 | |a Yao, Lu |e verfasserin |4 aut | |
| 700 | 1 | |a He, Min |e verfasserin |4 aut | |
| 700 | 1 | |a Lv, Yuwei |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Rong |e verfasserin |4 aut | |
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