Inter-phase Mass Transport: Modelling of Air-water Movement of Organic Chemicals
Air-water inter-phase mass transport of organic contaminants is often an important factor in their environmental fate and behaviour. The equilibrium situation is given by the Henry's Law Constant of the compound, but is rarely attained under environmental conditions. Approach to equilibrium is...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Environmental Research Institute, Chulalongkorn University
2013-06-01
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| Series: | Applied Environmental Research |
| Subjects: | |
| Online Access: | https://ph01-ohno.tci-thaijo.org/index.php/aer/article/view/9696 |
| _version_ | 1811339414759014400 |
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| author | Darryl Hawker Benjalak Karnchanasest |
| author_facet | Darryl Hawker Benjalak Karnchanasest |
| author_sort | Darryl Hawker |
| collection | DOAJ |
| description |
Air-water inter-phase mass transport of organic contaminants is often an important factor in their environmental fate and behaviour. The equilibrium situation is given by the Henry's Law Constant of the compound, but is rarely attained under environmental conditions. Approach to equilibrium is commonly described by the two-film theory involving molecular (Fickian) diffusion through thin stagnant films adjacent to the air-water interface. This theory is formulated in terms of mass transfer coefficients and fugacity transport parameters. Penetration and Surface Renewal Theories of mass transfer are also discussed. The importance of the Henry's Law Constant (H) is shown. Compounds such as phenol with relatively low values of H encounter most of their resistance to transport in the air and are said to be under air film control. Compounds such as methane with relatively large values of H encounter most of their resistance to transport in the water and are said to be under air film control. Estimation methods for mass transfer coefficients and fugacity transport parameters to enable modelling are shown.
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| first_indexed | 2024-04-13T18:27:14Z |
| format | Article |
| id | doaj.art-168fd81e426b443a9fb7df8a3e934dff |
| institution | Directory Open Access Journal |
| issn | 2287-0741 2287-075X |
| language | English |
| last_indexed | 2024-04-13T18:27:14Z |
| publishDate | 2013-06-01 |
| publisher | Environmental Research Institute, Chulalongkorn University |
| record_format | Article |
| series | Applied Environmental Research |
| spelling | doaj.art-168fd81e426b443a9fb7df8a3e934dff2022-12-22T02:35:13ZengEnvironmental Research Institute, Chulalongkorn UniversityApplied Environmental Research2287-07412287-075X2013-06-01321Inter-phase Mass Transport: Modelling of Air-water Movement of Organic ChemicalsDarryl Hawker0Benjalak Karnchanasest1School of Environment, Griffith University, Queensland, AustraliEnvironmental Research Institute, Chulalongkorn University, Bangkok, Thailand Air-water inter-phase mass transport of organic contaminants is often an important factor in their environmental fate and behaviour. The equilibrium situation is given by the Henry's Law Constant of the compound, but is rarely attained under environmental conditions. Approach to equilibrium is commonly described by the two-film theory involving molecular (Fickian) diffusion through thin stagnant films adjacent to the air-water interface. This theory is formulated in terms of mass transfer coefficients and fugacity transport parameters. Penetration and Surface Renewal Theories of mass transfer are also discussed. The importance of the Henry's Law Constant (H) is shown. Compounds such as phenol with relatively low values of H encounter most of their resistance to transport in the air and are said to be under air film control. Compounds such as methane with relatively large values of H encounter most of their resistance to transport in the water and are said to be under air film control. Estimation methods for mass transfer coefficients and fugacity transport parameters to enable modelling are shown. https://ph01-ohno.tci-thaijo.org/index.php/aer/article/view/9696Inter-phase mass transferHenry's law constantTwo-film theoryFugacity |
| spellingShingle | Darryl Hawker Benjalak Karnchanasest Inter-phase Mass Transport: Modelling of Air-water Movement of Organic Chemicals Applied Environmental Research Inter-phase mass transfer Henry's law constant Two-film theory Fugacity |
| title | Inter-phase Mass Transport: Modelling of Air-water Movement of Organic Chemicals |
| title_full | Inter-phase Mass Transport: Modelling of Air-water Movement of Organic Chemicals |
| title_fullStr | Inter-phase Mass Transport: Modelling of Air-water Movement of Organic Chemicals |
| title_full_unstemmed | Inter-phase Mass Transport: Modelling of Air-water Movement of Organic Chemicals |
| title_short | Inter-phase Mass Transport: Modelling of Air-water Movement of Organic Chemicals |
| title_sort | inter phase mass transport modelling of air water movement of organic chemicals |
| topic | Inter-phase mass transfer Henry's law constant Two-film theory Fugacity |
| url | https://ph01-ohno.tci-thaijo.org/index.php/aer/article/view/9696 |
| work_keys_str_mv | AT darrylhawker interphasemasstransportmodellingofairwatermovementoforganicchemicals AT benjalakkarnchanasest interphasemasstransportmodellingofairwatermovementoforganicchemicals |