Degradation kinetics of organic matter in dairy industry wastewater by flotation/ozonation processes
This study evaluated the adjustment of four kinetic models and their respective parameters on data of dairy wastewater treatment by the physico-chemical process of flotation and ozonation. The experiment was implemented during the year 2014, with all the tests in triplicate. The treatments were car...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Uberlândia
2018-05-01
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| Series: | Bioscience Journal |
| Subjects: | |
| Online Access: | https://seer-dev.ufu.br/index.php/biosciencejournal/article/view/37009 |
| _version_ | 1818287918628732928 |
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| author | Marta Cristina Silva Carvalho Alisson Carraro Borges Magno dos Santos Pereira Fernanda Fernandes Heleno Lêda Rita Dantonino Faroni Luiza Cintra Campos |
| author_facet | Marta Cristina Silva Carvalho Alisson Carraro Borges Magno dos Santos Pereira Fernanda Fernandes Heleno Lêda Rita Dantonino Faroni Luiza Cintra Campos |
| author_sort | Marta Cristina Silva Carvalho |
| collection | DOAJ |
| description |
This study evaluated the adjustment of four kinetic models and their respective parameters on data of dairy wastewater treatment by the physico-chemical process of flotation and ozonation. The experiment was implemented during the year 2014, with all the tests in triplicate. The treatments were carried out at different pH levels (3.6, 7.0 and 10.4), and flotation/ozonation was catalyzed by manganese (Mn2+) in neutral level (pH 7.0). Best removal efficiencies for chemical oxygen demand (COD) were obtained in acidic medium, with removals greater than 75% after 20 min of treatment. There was no significant difference with regards to addition of Mn2+ on COD removal by the physico-chemical process. The kinetic models that best fit to the experimental data, for all treatments, were the asymptotic (residual) model and that of Chan and Chu. Treatment in acidic medium showed the highest values of the kinetic parameters for the adjusted model, obtaining a k coefficient equal to 0.2394 min-1 for the asymptotic model and kinetic coefficient 1/Ï of 0.4816 min-1 for the Chan and Chu model, both presenting a determination coefficient greater than 99%.
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| first_indexed | 2024-12-13T01:48:07Z |
| format | Article |
| id | doaj.art-dc3c0e311fb4447e8ee3a678a62598f7 |
| institution | Directory Open Access Journal |
| issn | 1981-3163 |
| language | English |
| last_indexed | 2024-12-13T01:48:07Z |
| publishDate | 2018-05-01 |
| publisher | Universidade Federal de Uberlândia |
| record_format | Article |
| series | Bioscience Journal |
| spelling | doaj.art-dc3c0e311fb4447e8ee3a678a62598f72022-12-22T00:03:35ZengUniversidade Federal de UberlândiaBioscience Journal1981-31632018-05-01343Degradation kinetics of organic matter in dairy industry wastewater by flotation/ozonation processes Marta Cristina Silva Carvalho0Alisson Carraro BorgesMagno dos Santos Pereira1Fernanda Fernandes Heleno2Lêda Rita Dantonino Faroni3Luiza Cintra Campos4UFVUFVUFVUFVUniversity College London - UK This study evaluated the adjustment of four kinetic models and their respective parameters on data of dairy wastewater treatment by the physico-chemical process of flotation and ozonation. The experiment was implemented during the year 2014, with all the tests in triplicate. The treatments were carried out at different pH levels (3.6, 7.0 and 10.4), and flotation/ozonation was catalyzed by manganese (Mn2+) in neutral level (pH 7.0). Best removal efficiencies for chemical oxygen demand (COD) were obtained in acidic medium, with removals greater than 75% after 20 min of treatment. There was no significant difference with regards to addition of Mn2+ on COD removal by the physico-chemical process. The kinetic models that best fit to the experimental data, for all treatments, were the asymptotic (residual) model and that of Chan and Chu. Treatment in acidic medium showed the highest values of the kinetic parameters for the adjusted model, obtaining a k coefficient equal to 0.2394 min-1 for the asymptotic model and kinetic coefficient 1/Ï of 0.4816 min-1 for the Chan and Chu model, both presenting a determination coefficient greater than 99%. https://seer-dev.ufu.br/index.php/biosciencejournal/article/view/37009asymptotic modelChan and Chu modelAOP |
| spellingShingle | Marta Cristina Silva Carvalho Alisson Carraro Borges Magno dos Santos Pereira Fernanda Fernandes Heleno Lêda Rita Dantonino Faroni Luiza Cintra Campos Degradation kinetics of organic matter in dairy industry wastewater by flotation/ozonation processes Bioscience Journal asymptotic model Chan and Chu model AOP |
| title | Degradation kinetics of organic matter in dairy industry wastewater by flotation/ozonation processes |
| title_full | Degradation kinetics of organic matter in dairy industry wastewater by flotation/ozonation processes |
| title_fullStr | Degradation kinetics of organic matter in dairy industry wastewater by flotation/ozonation processes |
| title_full_unstemmed | Degradation kinetics of organic matter in dairy industry wastewater by flotation/ozonation processes |
| title_short | Degradation kinetics of organic matter in dairy industry wastewater by flotation/ozonation processes |
| title_sort | degradation kinetics of organic matter in dairy industry wastewater by flotation ozonation processes |
| topic | asymptotic model Chan and Chu model AOP |
| url | https://seer-dev.ufu.br/index.php/biosciencejournal/article/view/37009 |
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