H2S Loss through Nalophan™ Bags: Contributions of Adsorption and Diffusion
Hydrogen-sulfide (H2S) is a molecule of small dimensions typically present in the odor emissions from different plants. The European Standard EN 13725:2003 set a maximum storage time allowed of 30 hours, during which the sampling bag has to maintain the mixture of odorants with minimal changes. This...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2017/9690704 |
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| author | Lidia Eusebio Laura Capelli Selena Sironi |
| author_facet | Lidia Eusebio Laura Capelli Selena Sironi |
| author_sort | Lidia Eusebio |
| collection | DOAJ |
| description | Hydrogen-sulfide (H2S) is a molecule of small dimensions typically present in the odor emissions from different plants. The European Standard EN 13725:2003 set a maximum storage time allowed of 30 hours, during which the sampling bag has to maintain the mixture of odorants with minimal changes. This study investigates the H2S losses through Nalophan bags and it shows that nonnegligible losses of H2S can be observed. The percent H2S loss after 30 hrs with respect to the initial concentration is equal to 33% ± 3% at a relative humidity of 20% and equal to 22% ± 1% at a relative humidity of 60%. The average quantity of adsorbed H2S at 30 h is equal to 2.17 105 gH2S/gNalophan at a storage humidity of 20% and equal to 1.79 105 gH2S/gNalophan at a storage humidity of 60%. The diffusion coefficients of H2S through Nalophan, for these two humidity conditions tested, are comparable (i.e., 7.5 10−12 m2/sec at 20% humidity and 6.6 10−12 m2/sec at 60% humidity). |
| format | Article |
| id | doaj-art-7f5a48db88f346d88f1b2e7abd1e1da6 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-7f5a48db88f346d88f1b2e7abd1e1da62025-02-03T01:03:35ZengWileyThe Scientific World Journal2356-61401537-744X2017-01-01201710.1155/2017/96907049690704H2S Loss through Nalophan™ Bags: Contributions of Adsorption and DiffusionLidia Eusebio0Laura Capelli1Selena Sironi2Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, ItalyDepartment of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, ItalyDepartment of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, ItalyHydrogen-sulfide (H2S) is a molecule of small dimensions typically present in the odor emissions from different plants. The European Standard EN 13725:2003 set a maximum storage time allowed of 30 hours, during which the sampling bag has to maintain the mixture of odorants with minimal changes. This study investigates the H2S losses through Nalophan bags and it shows that nonnegligible losses of H2S can be observed. The percent H2S loss after 30 hrs with respect to the initial concentration is equal to 33% ± 3% at a relative humidity of 20% and equal to 22% ± 1% at a relative humidity of 60%. The average quantity of adsorbed H2S at 30 h is equal to 2.17 105 gH2S/gNalophan at a storage humidity of 20% and equal to 1.79 105 gH2S/gNalophan at a storage humidity of 60%. The diffusion coefficients of H2S through Nalophan, for these two humidity conditions tested, are comparable (i.e., 7.5 10−12 m2/sec at 20% humidity and 6.6 10−12 m2/sec at 60% humidity).http://dx.doi.org/10.1155/2017/9690704 |
| spellingShingle | Lidia Eusebio Laura Capelli Selena Sironi H2S Loss through Nalophan™ Bags: Contributions of Adsorption and Diffusion The Scientific World Journal |
| title | H2S Loss through Nalophan™ Bags: Contributions of Adsorption and Diffusion |
| title_full | H2S Loss through Nalophan™ Bags: Contributions of Adsorption and Diffusion |
| title_fullStr | H2S Loss through Nalophan™ Bags: Contributions of Adsorption and Diffusion |
| title_full_unstemmed | H2S Loss through Nalophan™ Bags: Contributions of Adsorption and Diffusion |
| title_short | H2S Loss through Nalophan™ Bags: Contributions of Adsorption and Diffusion |
| title_sort | h2s loss through nalophan™ bags contributions of adsorption and diffusion |
| url | http://dx.doi.org/10.1155/2017/9690704 |
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