Modeling geosmin removal in a full-scale filter
Abstract Taste and odor compounds affect drinking water safety perception and may drive consumers to less secure water sources. Adsorption, using powered activated carbon, is the most common method to remove these compounds but greatly increases the amount of sludge generated. Another way of removin...
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| Format: | Article |
| Language: | English |
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Academia Brasileira de Ciências
2020-11-01
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| Series: | Anais da Academia Brasileira de Ciências |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000501105&tlng=en |
| _version_ | 1798019325794189312 |
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| author | JULIANA A. COELHO DIANA CRISTINA S. DE AZEVEDO IVANILDO JOSÉ DA SILVA JUNIOR JOSÉ CAPELO-NETO |
| author_facet | JULIANA A. COELHO DIANA CRISTINA S. DE AZEVEDO IVANILDO JOSÉ DA SILVA JUNIOR JOSÉ CAPELO-NETO |
| author_sort | JULIANA A. COELHO |
| collection | DOAJ |
| description | Abstract Taste and odor compounds affect drinking water safety perception and may drive consumers to less secure water sources. Adsorption, using powered activated carbon, is the most common method to remove these compounds but greatly increases the amount of sludge generated. Another way of removing taste and odor compounds is to use filters with granular activated carbon (GAC) but little is still known on how to design them. In this work, the homogeneous surface diffusion model (HSDM) was used to model bench-scale kinetic and isotherm experiments and to simulate the removal of geosmin in a full-scale GAC filter. Geosmin adsorption isotherm was best described by the Freundlich model in all used carbons and film resistance (Kf) was more relevant to adsorption kinetics than pore diffusion (Ds). The simulation showed that in a filter with an empty bed contact time of 5 minutes and raw water with geosmin concentrations of 50, 75, and 100 ng.L-1, the effluent would exceed the trash-hold concentration (10 ng.L-1) in 98, 77, and 66 days, respectively, without considering biological removal. |
| first_indexed | 2024-04-11T16:38:55Z |
| format | Article |
| id | doaj.art-fbb026362bff4e33bc641ecfbde14b7d |
| institution | Directory Open Access Journal |
| issn | 1678-2690 |
| language | English |
| last_indexed | 2024-04-11T16:38:55Z |
| publishDate | 2020-11-01 |
| publisher | Academia Brasileira de Ciências |
| record_format | Article |
| series | Anais da Academia Brasileira de Ciências |
| spelling | doaj.art-fbb026362bff4e33bc641ecfbde14b7d2022-12-22T04:13:44ZengAcademia Brasileira de CiênciasAnais da Academia Brasileira de Ciências1678-26902020-11-0192310.1590/0001-3765202020190453Modeling geosmin removal in a full-scale filterJULIANA A. COELHOhttps://orcid.org/0000-0002-0575-6750DIANA CRISTINA S. DE AZEVEDOhttps://orcid.org/0000-0001-8545-3989IVANILDO JOSÉ DA SILVA JUNIORhttps://orcid.org/0000-0002-1297-0261JOSÉ CAPELO-NETOhttps://orcid.org/0000-0002-7669-7153Abstract Taste and odor compounds affect drinking water safety perception and may drive consumers to less secure water sources. Adsorption, using powered activated carbon, is the most common method to remove these compounds but greatly increases the amount of sludge generated. Another way of removing taste and odor compounds is to use filters with granular activated carbon (GAC) but little is still known on how to design them. In this work, the homogeneous surface diffusion model (HSDM) was used to model bench-scale kinetic and isotherm experiments and to simulate the removal of geosmin in a full-scale GAC filter. Geosmin adsorption isotherm was best described by the Freundlich model in all used carbons and film resistance (Kf) was more relevant to adsorption kinetics than pore diffusion (Ds). The simulation showed that in a filter with an empty bed contact time of 5 minutes and raw water with geosmin concentrations of 50, 75, and 100 ng.L-1, the effluent would exceed the trash-hold concentration (10 ng.L-1) in 98, 77, and 66 days, respectively, without considering biological removal.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000501105&tlng=enGAC filter sizetaste and odor compoundsactivated carbonadsorption simulation |
| spellingShingle | JULIANA A. COELHO DIANA CRISTINA S. DE AZEVEDO IVANILDO JOSÉ DA SILVA JUNIOR JOSÉ CAPELO-NETO Modeling geosmin removal in a full-scale filter Anais da Academia Brasileira de Ciências GAC filter size taste and odor compounds activated carbon adsorption simulation |
| title | Modeling geosmin removal in a full-scale filter |
| title_full | Modeling geosmin removal in a full-scale filter |
| title_fullStr | Modeling geosmin removal in a full-scale filter |
| title_full_unstemmed | Modeling geosmin removal in a full-scale filter |
| title_short | Modeling geosmin removal in a full-scale filter |
| title_sort | modeling geosmin removal in a full scale filter |
| topic | GAC filter size taste and odor compounds activated carbon adsorption simulation |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000501105&tlng=en |
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