dc.contributor | Universidade de São Paulo (USP) | |
dc.contributor | Universidade Estadual Paulista (Unesp) | |
dc.date.accessioned | 2014-05-20T15:27:20Z | |
dc.date.accessioned | 2022-10-05T16:42:31Z | |
dc.date.available | 2014-05-20T15:27:20Z | |
dc.date.available | 2022-10-05T16:42:31Z | |
dc.date.created | 2014-05-20T15:27:20Z | |
dc.date.issued | 2006-02-15 | |
dc.identifier | Biochemical Engineering Journal. Lausanne: Elsevier B.V. Sa, v. 28, n. 2, p. 201-207, 2006. | |
dc.identifier | 1369-703X | |
dc.identifier | http://hdl.handle.net/11449/37347 | |
dc.identifier | 10.1016/j.bej.2005.11.005 | |
dc.identifier | WOS:000235682700013 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/3908890 | |
dc.description.abstract | The biooxidation of ferrous ion into ferric ion by Acidithiobacillus ferrooxidans can be potentially used for the removal of H2S from industrial gases. In this work, Fe3+ ions were obtained through the oxidation of Fe2+ using the LR strain of At. ferrooxidans immobilized in PVC stands in a pilot-scale bioreactor, while H2S was removed in an absorption tower equipped with Rasching rings. At. ferrooxidans LR strain cells were immobilized by inoculating the bacterium in a Fe2+-mineral medium and percolating it through the support. After complete Fe2+ oxidation, which took around 90 h, the reactor was washed several times with sulfuric acid (pH 1.7) before a new cycle was started. Four additional cycles using fresh Fe2+ mineral medium were then run. During these colonization cycles, the time required for complete iron oxidation decreased, dropping to about 60 h in the last cycle. The batch experiments in the H2S gas removal trials resulted in a gas removal rate of about 98-99% under the operational conditions employed. In the continuous experiments with the bioreactor coupled to the gas absorption column, a gas removal efficiency of almost 100% was reached after 500 min. Precipitate containing mainly sulfur formed during the experimental trial was identified by EDX. (c) 2005 Elsevier B.V. All rights reserved. | |
dc.language | eng | |
dc.publisher | Elsevier B.V. | |
dc.relation | Biochemical Engineering Journal | |
dc.relation | 3.226 | |
dc.rights | Acesso restrito | |
dc.source | Web of Science | |
dc.subject | biological oxidation | |
dc.subject | bioreactors | |
dc.subject | Acidithiobacillus-ferooxidans | |
dc.subject | ferrous sulfate | |
dc.subject | immobilization | |
dc.subject | hydrogen sulfide | |
dc.title | Immobilized cells of Acidithiobacillus ferrooxidans in PVC strands and sultite removal in a pilot-scale bioreactor | |
dc.type | Artigo | |