As(III) biological oxidation by CAsO1 consortium in fixed-bed reactors
In water treatment, removal of arsenite, the most toxic arsenic inorganic form, consists often in its oxidation, followed by precipitation or adsorption step. In this work, this oxidation step was done by a biological process, using an autotrophic bacterial consortium named CAsO1, isolated from a go...
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| Veröffentlicht in: | Process biochemistry (1991) 2010-02, Vol.45 (2), p.171-178 |
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| container_title | Process biochemistry (1991) |
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| creator | Michon, Jérôme Dagot, Christophe Deluchat, Véronique Dictor, Marie-Christine Battaglia-Brunet, Fabienne Baudu, Michel |
| description | In water treatment, removal of arsenite, the most toxic arsenic inorganic form, consists often in its oxidation, followed by precipitation or adsorption step. In this work, this oxidation step was done by a biological process, using an autotrophic bacterial consortium named CAsO1, isolated from a gold-mining site. A pilot plant was built, consisting of two biological fixed beds, inoculated with the CAsO1 consortium and fed with synthetic water spiked with As(III). Firstly, the hydrodynamic parameters were determined. The residence time distribution modelling showed a plug flow distribution with low diffusion phenomena. Secondly, the kinetic analysis, considering a first order reaction, made it possible to calculate the oxidation kinetic constant (0.04
min
−1) and showed a heterogeneous distribution of the active biomass along the reactor. Batch experiments conducted with parts of the bed-support made it possible to characterize this kind of distribution. Finally, the hydrodynamic and kinetic studies enabled us to propose a design approach for such a biological treatment process. |
| doi_str_mv | 10.1016/j.procbio.2009.09.003 |
| format | Article |
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min
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min
−1) and showed a heterogeneous distribution of the active biomass along the reactor. Batch experiments conducted with parts of the bed-support made it possible to characterize this kind of distribution. Finally, the hydrodynamic and kinetic studies enabled us to propose a design approach for such a biological treatment process.</description><subject>Arsenate</subject><subject>Arsenite</subject><subject>Bacteria</subject><subject>Biological</subject><subject>Biological oxidation</subject><subject>CAsO1 consortium</subject><subject>Environmental Engineering</subject><subject>Environmental Sciences</subject><subject>Fixed-bed reactor</subject><subject>Fluid flow</subject><subject>Hydrodynamics</subject><subject>Mathematical models</subject><subject>Oxidation</subject><subject>Reaction kinetics</subject><subject>Reactors</subject><subject>Water treatment</subject><issn>1359-5113</issn><issn>1873-3298</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNqFkU9LAzEQxRdRsP75CMKepB62ZjabTfYkpagtFLzoOWSTiaZsNzXZin57s1Q8KgzMMPzeMLyXZVdAZkCgvt3MdsHr1vlZSUgzG4vQo2wCgtOClo04TjNlTcEA6Gl2FuMmAQBAJtnDPE5Xq9VNnuSdf3Vadbn_dEYNzvd5-5Uv5vEJcu376MPg9tvc9bl1n2iKFk0eUOnBh3iRnVjVRbz86efZy8P982JZrJ8eV4v5utCMVEOhUVBCy5ZbS5jiTImS2dbSGrlpqUVmG8rbmlfQVBpNBYJpwokBawwKJuh5dnO4-6Y6uQtuq8KX9MrJ5Xwtxx0hjPGasg9I7PWBTe687zEOcuuixq5TPfp9lDRhgvH_wRJKVoq6SuD0TxA451BSYCSh7IDq4GMMaH-_BSLH1ORG_qQmx9TkWIQm3d1Bh8nFD4dBRu2wT2a4gHqQxrt_LnwDnY6gsQ</recordid><startdate>20100201</startdate><enddate>20100201</enddate><creator>Michon, Jérôme</creator><creator>Dagot, Christophe</creator><creator>Deluchat, Véronique</creator><creator>Dictor, Marie-Christine</creator><creator>Battaglia-Brunet, Fabienne</creator><creator>Baudu, Michel</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SU</scope><scope>7U5</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>L7M</scope><scope>7QH</scope><scope>7QL</scope><scope>7QO</scope><scope>7T7</scope><scope>7UA</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope><scope>P64</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0002-4005-6290</orcidid><orcidid>https://orcid.org/0000-0003-3632-0420</orcidid></search><sort><creationdate>20100201</creationdate><title>As(III) biological oxidation by CAsO1 consortium in fixed-bed reactors</title><author>Michon, Jérôme ; 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min
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| issn | 1359-5113 1873-3298 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Arsenate Arsenite Bacteria Biological Biological oxidation CAsO1 consortium Environmental Engineering Environmental Sciences Fixed-bed reactor Fluid flow Hydrodynamics Mathematical models Oxidation Reaction kinetics Reactors Water treatment |
| title | As(III) biological oxidation by CAsO1 consortium in fixed-bed reactors |
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