Interactions of 2,2′-bipyridine herbicide intermediate with humic acid
The binding of the neutral 2,2′-bipyridine (BP) molecule to solid humic acid (HA) was studied in the presence of CaCl2 background electrolyte (10-2 mol/l), at pH=6.1–6.3. To investigate the binding, two different methods were used: the well-established static adsorption equilibrium measurements and...
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| Format: | Article |
| Language: | English |
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De Gruyter
2014-04-01
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| Series: | Green Processing and Synthesis |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/gps-2014-0008 |
| _version_ | 1818390472514600960 |
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| author | Rádi József Stéger Domonkos Marton Aurél Földényi Rita |
| author_facet | Rádi József Stéger Domonkos Marton Aurél Földényi Rita |
| author_sort | Rádi József |
| collection | DOAJ |
| description | The binding of the neutral 2,2′-bipyridine (BP) molecule to solid humic acid (HA) was studied in the presence of CaCl2 background electrolyte (10-2 mol/l), at pH=6.1–6.3. To investigate the binding, two different methods were used: the well-established static adsorption equilibrium measurements and the technique of equilibrium dialysis (ED). The obtained isotherms were fitted by the Langmuir equation, yielding values for the total binding capacity (qT) and the Langmuir constant (K). The values obtained from the batch experiment were: qT=3.3×10-4 mol/gHA, K=4.1×102 l/mol and from the ED experiment were: qT=5.7×10-4 mol/gHA, K=2.8×102 l/mol. From the linear range of the isotherm, the value of the distribution coefficient KD was calculated as 3.3×102 l/kgHA (by both methods). This parameter was used to calculate the value of KOC: 6.6×102 l/kgOC,indicating that BP is a slightly mobile pollutant in the HA dominated soil. |
| first_indexed | 2024-12-14T04:58:10Z |
| format | Article |
| id | doaj.art-b54999dadc194f548ea5d7fd16cfcefb |
| institution | Directory Open Access Journal |
| issn | 2191-9542 2191-9550 |
| language | English |
| last_indexed | 2024-12-14T04:58:10Z |
| publishDate | 2014-04-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Green Processing and Synthesis |
| spelling | doaj.art-b54999dadc194f548ea5d7fd16cfcefb2022-12-21T23:16:18ZengDe GruyterGreen Processing and Synthesis2191-95422191-95502014-04-013215516110.1515/gps-2014-0008Interactions of 2,2′-bipyridine herbicide intermediate with humic acidRádi József0Stéger Domonkos1Marton Aurél2Földényi Rita3Department of Earth and Environmental Sciences, University of Pannonia, 10 Egyetem u., H-8200 Veszprém, HungaryDepartment of Earth and Environmental Sciences, University of Pannonia, 10 Egyetem u., H-8200 Veszprém, HungaryDepartment of Earth and Environmental Sciences, University of Pannonia, 10 Egyetem u., H-8200 Veszprém, HungaryDepartment of Earth and Environmental Sciences, University of Pannonia, 10 Egyetem u., H-8200 Veszprém, HungaryThe binding of the neutral 2,2′-bipyridine (BP) molecule to solid humic acid (HA) was studied in the presence of CaCl2 background electrolyte (10-2 mol/l), at pH=6.1–6.3. To investigate the binding, two different methods were used: the well-established static adsorption equilibrium measurements and the technique of equilibrium dialysis (ED). The obtained isotherms were fitted by the Langmuir equation, yielding values for the total binding capacity (qT) and the Langmuir constant (K). The values obtained from the batch experiment were: qT=3.3×10-4 mol/gHA, K=4.1×102 l/mol and from the ED experiment were: qT=5.7×10-4 mol/gHA, K=2.8×102 l/mol. From the linear range of the isotherm, the value of the distribution coefficient KD was calculated as 3.3×102 l/kgHA (by both methods). This parameter was used to calculate the value of KOC: 6.6×102 l/kgOC,indicating that BP is a slightly mobile pollutant in the HA dominated soil.https://doi.org/10.1515/gps-2014-00082,2′-bipyridineadsorptionequilibrium dialysishumic acidmobility |
| spellingShingle | Rádi József Stéger Domonkos Marton Aurél Földényi Rita Interactions of 2,2′-bipyridine herbicide intermediate with humic acid Green Processing and Synthesis 2,2′-bipyridine adsorption equilibrium dialysis humic acid mobility |
| title | Interactions of 2,2′-bipyridine herbicide intermediate with humic acid |
| title_full | Interactions of 2,2′-bipyridine herbicide intermediate with humic acid |
| title_fullStr | Interactions of 2,2′-bipyridine herbicide intermediate with humic acid |
| title_full_unstemmed | Interactions of 2,2′-bipyridine herbicide intermediate with humic acid |
| title_short | Interactions of 2,2′-bipyridine herbicide intermediate with humic acid |
| title_sort | interactions of 2 2 bipyridine herbicide intermediate with humic acid |
| topic | 2,2′-bipyridine adsorption equilibrium dialysis humic acid mobility |
| url | https://doi.org/10.1515/gps-2014-0008 |
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