A mathematical model for the bacterial oxidation of a sulfide ore concentrate
The effect of dilution rate and feed solids concentration on the bacterial leaching of a pyrite/arsenopyrite ore concentrate was studied. A mathematical model was developed for the process based on the steady‐state data collected over the range of dilution rates (20 to 110 h) and feed solids concent...
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| Veröffentlicht in: | Biotechnology and bioengineering 1994-03, Vol.43 (5), p.357-364 |
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| creator | Nagpal, Soumitro Dahlstrom, Donald Oolman, Timothy |
| description | The effect of dilution rate and feed solids concentration on the bacterial leaching of a pyrite/arsenopyrite ore concentrate was studied. A mathematical model was developed for the process based on the steady‐state data collected over the range of dilution rates (20 to 110 h) and feed solids concentrations (6 to 18% w/v) studied. A modified Monod model with inhibition by arsenic was used to model bacterial ferrous ion oxidation rates. The model assumes that (i) pyrite and arsenopyrite leaching occurs solely by the action of ferric iron produced from the bacterial oxidation of ferrous iron and (ii) bacterial growth rates are proportional to ferrous ion oxidation rate. The equilibrium among the various ionic species present in the leach solution that are likely to have a significant effect on the bioleach process were included in the model. © 1994 John Wiley & Sons, Inc. |
| doi_str_mv | 10.1002/bit.260430503 |
| format | Article |
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A mathematical model was developed for the process based on the steady‐state data collected over the range of dilution rates (20 to 110 h) and feed solids concentrations (6 to 18% w/v) studied. A modified Monod model with inhibition by arsenic was used to model bacterial ferrous ion oxidation rates. The model assumes that (i) pyrite and arsenopyrite leaching occurs solely by the action of ferric iron produced from the bacterial oxidation of ferrous iron and (ii) bacterial growth rates are proportional to ferrous ion oxidation rate. The equilibrium among the various ionic species present in the leach solution that are likely to have a significant effect on the bioleach process were included in the model. © 1994 John Wiley & Sons, Inc.</description><identifier>ISSN: 0006-3592</identifier><identifier>EISSN: 1097-0290</identifier><identifier>DOI: 10.1002/bit.260430503</identifier><identifier>PMID: 18615718</identifier><identifier>CODEN: BIBIAU</identifier><language>eng</language><publisher>Hoboken: Wiley Subscription Services, Inc., A Wiley Company</publisher><subject>560300 - Chemicals Metabolism & Toxicology ; ARSENIC ; arsenic inhibition ; BACILLUS ; BACTERIA ; BIODEGRADATION ; Biohydrometallurgy. Microbial leaching ; Biological and medical sciences ; BIOREACTORS ; Biotechnology ; CHALCOGENIDES ; CHEMICAL REACTIONS ; DECOMPOSITION ; ELEMENTS ; Fundamental and applied biological sciences. Psychology ; GROWTH ; Industrial applications and implications. Economical aspects ; IRON ; METALS ; MICROORGANISMS ; MINERALS ; Monod kinetics ; PYRITE ; pyrite/arsenopyrite leaching ; RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. 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Bioeng</addtitle><description>The effect of dilution rate and feed solids concentration on the bacterial leaching of a pyrite/arsenopyrite ore concentrate was studied. A mathematical model was developed for the process based on the steady‐state data collected over the range of dilution rates (20 to 110 h) and feed solids concentrations (6 to 18% w/v) studied. A modified Monod model with inhibition by arsenic was used to model bacterial ferrous ion oxidation rates. The model assumes that (i) pyrite and arsenopyrite leaching occurs solely by the action of ferric iron produced from the bacterial oxidation of ferrous iron and (ii) bacterial growth rates are proportional to ferrous ion oxidation rate. The equilibrium among the various ionic species present in the leach solution that are likely to have a significant effect on the bioleach process were included in the model. © 1994 John Wiley & Sons, Inc.</description><subject>560300 - Chemicals Metabolism & Toxicology</subject><subject>ARSENIC</subject><subject>arsenic inhibition</subject><subject>BACILLUS</subject><subject>BACTERIA</subject><subject>BIODEGRADATION</subject><subject>Biohydrometallurgy. Microbial leaching</subject><subject>Biological and medical sciences</subject><subject>BIOREACTORS</subject><subject>Biotechnology</subject><subject>CHALCOGENIDES</subject><subject>CHEMICAL REACTIONS</subject><subject>DECOMPOSITION</subject><subject>ELEMENTS</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>GROWTH</subject><subject>Industrial applications and implications. Economical aspects</subject><subject>IRON</subject><subject>METALS</subject><subject>MICROORGANISMS</subject><subject>MINERALS</subject><subject>Monod kinetics</subject><subject>PYRITE</subject><subject>pyrite/arsenopyrite leaching</subject><subject>RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT</subject><subject>SEMIMETALS</subject><subject>SULFIDE MINERALS</subject><subject>SULFIDES</subject><subject>SULFUR COMPOUNDS</subject><subject>SULFUR-OXIDIZING BACTERIA</subject><subject>Thiobacillus ferrooxidans</subject><subject>THIOBACILLUS FERROXIDANS</subject><subject>TRANSITION ELEMENTS</subject><issn>0006-3592</issn><issn>1097-0290</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1994</creationdate><recordtype>article</recordtype><recordid>eNp90c1vFCEUAHBiNHatHr0aYoyepvIxwHCsq7ZNqsZkjb0RBh4pOjtUYGP734vZyeqpFwgvP957eQ-h55ScUELY2zHWEyZJz4kg_AFaUaJVR5gmD9GKECI7LjQ7Qk9K-dGeapDyMTqig6RC0WGFPp3ira3X0I7o7IS3ycOEQ8q4BfFoXYUcWzzdRt9ImnEK2OKym0L0gFMG7NLsYK7ZVniKHgU7FXi23Mfo28cPm_V5d_nl7GJ9etm5Xmve2YHQ4CwbhdDehsH33PUjc4O03IMYAufKy5ETL8FpYC4I5ggbB68l1zLwY_RynzeVGk1xsYK7bn3M4KpRlCpCaENv9ugmp187KNVsY3EwTXaGtCtGcS4lE4I3-fpeSaUWgui-wW4PXU6lZAjmJsetzXeGEvN3HaatwxzW0fyLJfFu3IL_p5f5N_BqAba08YdsZxfLwXFN5UBFY2rPfscJ7u4vat5dbP7vYOk4lgq3h582_zRScSXM989nRmyu1u_F1ytzzv8AH-qw6A</recordid><startdate>19940305</startdate><enddate>19940305</enddate><creator>Nagpal, Soumitro</creator><creator>Dahlstrom, Donald</creator><creator>Oolman, Timothy</creator><general>Wiley Subscription Services, Inc., A Wiley Company</general><general>Wiley</general><scope>BSCLL</scope><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7T7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>7X8</scope><scope>OTOTI</scope></search><sort><creationdate>19940305</creationdate><title>A mathematical model for the bacterial oxidation of a sulfide ore concentrate</title><author>Nagpal, Soumitro ; Dahlstrom, Donald ; Oolman, Timothy</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4993-a801fca2b559daf8d43c4b2c86a3de58f337d6b30d6ec9e2cf52c02b8d96396f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1994</creationdate><topic>560300 - Chemicals Metabolism & Toxicology</topic><topic>ARSENIC</topic><topic>arsenic inhibition</topic><topic>BACILLUS</topic><topic>BACTERIA</topic><topic>BIODEGRADATION</topic><topic>Biohydrometallurgy. Microbial leaching</topic><topic>Biological and medical sciences</topic><topic>BIOREACTORS</topic><topic>Biotechnology</topic><topic>CHALCOGENIDES</topic><topic>CHEMICAL REACTIONS</topic><topic>DECOMPOSITION</topic><topic>ELEMENTS</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>GROWTH</topic><topic>Industrial applications and implications. Economical aspects</topic><topic>IRON</topic><topic>METALS</topic><topic>MICROORGANISMS</topic><topic>MINERALS</topic><topic>Monod kinetics</topic><topic>PYRITE</topic><topic>pyrite/arsenopyrite leaching</topic><topic>RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT</topic><topic>SEMIMETALS</topic><topic>SULFIDE MINERALS</topic><topic>SULFIDES</topic><topic>SULFUR COMPOUNDS</topic><topic>SULFUR-OXIDIZING BACTERIA</topic><topic>Thiobacillus ferrooxidans</topic><topic>THIOBACILLUS FERROXIDANS</topic><topic>TRANSITION ELEMENTS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nagpal, Soumitro</creatorcontrib><creatorcontrib>Dahlstrom, Donald</creatorcontrib><creatorcontrib>Oolman, Timothy</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><collection>OSTI.GOV</collection><jtitle>Biotechnology and bioengineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nagpal, Soumitro</au><au>Dahlstrom, Donald</au><au>Oolman, Timothy</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A mathematical model for the bacterial oxidation of a sulfide ore concentrate</atitle><jtitle>Biotechnology and bioengineering</jtitle><addtitle>Biotechnol. Bioeng</addtitle><date>1994-03-05</date><risdate>1994</risdate><volume>43</volume><issue>5</issue><spage>357</spage><epage>364</epage><pages>357-364</pages><issn>0006-3592</issn><eissn>1097-0290</eissn><coden>BIBIAU</coden><abstract>The effect of dilution rate and feed solids concentration on the bacterial leaching of a pyrite/arsenopyrite ore concentrate was studied. A mathematical model was developed for the process based on the steady‐state data collected over the range of dilution rates (20 to 110 h) and feed solids concentrations (6 to 18% w/v) studied. A modified Monod model with inhibition by arsenic was used to model bacterial ferrous ion oxidation rates. The model assumes that (i) pyrite and arsenopyrite leaching occurs solely by the action of ferric iron produced from the bacterial oxidation of ferrous iron and (ii) bacterial growth rates are proportional to ferrous ion oxidation rate. The equilibrium among the various ionic species present in the leach solution that are likely to have a significant effect on the bioleach process were included in the model. © 1994 John Wiley & Sons, Inc.</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><pmid>18615718</pmid><doi>10.1002/bit.260430503</doi><tpages>8</tpages></addata></record> |
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| ispartof | Biotechnology and bioengineering, 1994-03, Vol.43 (5), p.357-364 |
| issn | 0006-3592 1097-0290 |
| language | eng |
| recordid | cdi_osti_scitechconnect_7117001 |
| source | Wiley Online Library Journals Frontfile Complete |
| subjects | 560300 - Chemicals Metabolism & Toxicology ARSENIC arsenic inhibition BACILLUS BACTERIA BIODEGRADATION Biohydrometallurgy. Microbial leaching Biological and medical sciences BIOREACTORS Biotechnology CHALCOGENIDES CHEMICAL REACTIONS DECOMPOSITION ELEMENTS Fundamental and applied biological sciences. Psychology GROWTH Industrial applications and implications. Economical aspects IRON METALS MICROORGANISMS MINERALS Monod kinetics PYRITE pyrite/arsenopyrite leaching RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT SEMIMETALS SULFIDE MINERALS SULFIDES SULFUR COMPOUNDS SULFUR-OXIDIZING BACTERIA Thiobacillus ferrooxidans THIOBACILLUS FERROXIDANS TRANSITION ELEMENTS |
| title | A mathematical model for the bacterial oxidation of a sulfide ore concentrate |
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